Grain soybean(Glycine max(L.)Merr.)shows potential as a forage crop following its introduction from low to high latitudes due to in its growth phenotype.However,the application of this approach is impeded by the diver...Grain soybean(Glycine max(L.)Merr.)shows potential as a forage crop following its introduction from low to high latitudes due to in its growth phenotype.However,the application of this approach is impeded by the diverse ecological types of soybean,their adaptability to the introduction,and the uncertainty surrounding the growth phenotype post-introduction.This study introduced 24 grain soybean varieties from low-latitude regions(22-31°N)to the high-latitude northwestern Loess Plateau(39°N)between 2018 and 2019.The growth phenotypes were observed,and their forage productivity potential was assessed.All varieties displayed delayed flowering following cross-latitude introduction,with the vegetative growth phase of some varieties even exceeding their entire growth duration at their origin.Rapid dry matter accumulation rates indicated growth adaptation performance and formed the basis for soybean forage yield.Varieties from the tropical South China region exhibited significant yield advantages,with dry matter yields of 8.97-14.68 t ha^(-1)and crude protein yields of 1.44-2.51 t ha^(-1).Varieties HX3 and GX7 from this region demonstrated optimal growth adaptability and productivity in the cross-latitude environment,achieving the highest dry matter yields of 14.68 and 13.86 t ha^(-1),respectively.As a result,HX3 and GX7 are recommended for local farming systems to provide high-quality forage.The cross-latitude introduction of soybean is proposed as a viable and efficient strategy for forage improvement and application.展开更多
[Objectives]Amygdalus tangutica is a new and excellent tree species for afforestation in arid areas of central China for soil and water conservation.It has the characteristics of drought resistance,cold resistance and...[Objectives]Amygdalus tangutica is a new and excellent tree species for afforestation in arid areas of central China for soil and water conservation.It has the characteristics of drought resistance,cold resistance and tolerance to poor soil,and has strong ecological,landscape and economic value.To provide a theoretical basis for the propagation and application of A.tangutica in Minqin and similar arid sandy areas of Northwest China,this paper explored its introduction and cultivation technology through field experiments,considering the natural geographical conditions of the study area.[Methods]High-quality seeds were introduced from forest farms of Chankou Town,Anding District,Dingxi City,and Dian ga Town,Diebu County,Gannan Prefecture,and the introduction and cultivation experiments of A.tangutica were carried out in the greenhouse of Wuwei Oasis Station.[Results](1)Soaking treatment at different temperatures combined with gibberellin treatment and stratification germination could effectively break the dormancy of A.tangutica seeds,thereby accelerating germination and shortening the germination cycle.The germination peak appeared 15-20 d after sowing,and the final germination rate could reach about 50%.(2)In the introduction and cultivation of A.tangutica in arid areas,large fruit seeds with higher thousand-grain weight should be given priority.The emergence rate of large fruit seeds was significantly higher than that of small fruit seeds,with the highest reaching 57%,while the highest of small fruit seeds was only 20%.Soaking treatment at different temperatures had no significant difference in the germination performance and germination potential of A.tangutica seeds,but the germination index of large fruit seeds was higher than that of small fruit seeds.(3)Under the current conditions,seedling propagation is a reliable way to propagate A.tangutica in arid areas.The cutting propagation technology,particularly hardwood cutting which exhibits an extremely low survival rate,is not yet mature and is currently unsuitable for large-scale production.Consequently,future efforts should prioritize more in-depth research on softwood cutting techniques.[Conclusions]This study provides a theoretical foundation for the propagation and broader application of A.tangutica in Minqin and similar arid sandy areas of Northwest China.展开更多
This paper focuses on the ideological and political construction of the“Introduction to High-Speed Railway”course in higher vocational colleges.Based on the national policy orientation of ideological and political e...This paper focuses on the ideological and political construction of the“Introduction to High-Speed Railway”course in higher vocational colleges.Based on the national policy orientation of ideological and political education in courses and the talent demands of the high-speed railway industry,it comprehensively employs methods such as literature research and questionnaire surveys to analyze the current status and problems of ideological and political construction in the course.The research finds that there are issues such as insufficient in-depth exploration of ideological and political elements,inadequate teacher capabilities,monotonous teaching methods,and the absence of an evaluation system.In response to these problems,it proposes strategies such as deepening the exploration of ideological and political elements,enhancing teacher capabilities,innovating teaching methods,and improving the evaluation system.It aims to construct a collaborative system of“knowledge impartation+value guidance+practical education”,providing theoretical and practical references for the ideological and political construction of courses in higher vocational transportation-related majors.展开更多
[Objective] This study aimed to preliminarily select the plants with colored foliage adaptable to Zhengzhou area. [Method] An introduction trial on 42 varieties with colored foliage was conducted, in which major ornam...[Objective] This study aimed to preliminarily select the plants with colored foliage adaptable to Zhengzhou area. [Method] An introduction trial on 42 varieties with colored foliage was conducted, in which major ornamental characteristics, phenological phases and stress resistance of all the introduced plants with colored foliage were observed and the introduced plants were comprehensively evaluated. [Result] Golden-and Compound-leaved Maple, Red-leaved Sakura, Pink-and Compound-leaved Maple, Amur Maple, Purple-leaved Canadian Redbud with good performance were selected preliminarily, which can be applied for landscape in Zhengzhou area. Among them, Golden- and Compound-leaved Maple, Golden- and Silvery-leaved Maple and Purple-leaved Smoketree can either be planted separately, or in a line as boulevard trees, or in groups as ornamental forest; Red-leaved Sakura, Pink- and Compound-leaved Maple and Purple-leaved Canadian Redbud can be planted in groups or separately in gardens, parks or alongside streets or in front of buildings; Amur Maple with high adaptability is a excellent tree species for afforesting barren mountain. [Conclusion] This study has not only provided new excellent germplasm sources for the landscaping in Zhengzhou area, thus favoring the improvement of local landscaping level, but also provides examples and references for the introduction of plants with colored foliage in the other areas.展开更多
Pinus radiata was introduced to the summer rainfall environments of Sichuan Province, China in the 1990s as a part of an afforestation pmgram for soil and water conservation in the arid and semi-arid river valley area...Pinus radiata was introduced to the summer rainfall environments of Sichuan Province, China in the 1990s as a part of an afforestation pmgram for soil and water conservation in the arid and semi-arid river valley area of Aba Prefecture. Within this region a total area of 26 000 ha have been identified through climate matching as suitable and a further 63 000 ha potentially suitable for environmental plantings of P. radiata. The plantations are being established in widely separated small patches on steep and degraded slopes along the dry river valley The newly introduced P. radiata are exposed to two kinds of forest health risks： they may be attacked by （a） indigenous pathogens and pests against which they may not possess any resistance or （b） by inadvertently introduced foreign pests or pathogens. This paper presents a survey of the potential damaging pests and a preliminary assessment of forest health risks facing the P. radiata plantations over a much longer timeframe than the initial phase of introduction and early plantation establishment. An empirical appmach was adopted to evaluate forest health risks by a combination of literature review, examination of historical records of pest and disease outbreaks in the surrounding conifemus forests, field surveys and inspections, specimen collection and identification, and most importantly, expert analysis of the likelihood of attack by specific pests and pathogens and the subsequent impact of such attacks. The assessment identified some specific forest health risks to the long-term success of P. radiata introduction in this area. These risks are closely associated with the indigenous pests and pathogens of the two native pine species, P. tabulaeformis and P. armondii since these pests and pathogens are considered more likely to establish on P. radiata over time. Exotic pests and pathogens are of a quarantine concern at present. Based on the results of assessment, recommendations are pmvided to improve forest vigour and to reduce the forest health risks posed by indigenous as well as exotic pests and pathogens to the introduced P. radiata. Ways to increase the ability to manage the forest health risks once a particular pest infestation and disease eventuates are also recommended. Although detrimental to the survival and growth of the introduced P. radiata, the impact of identified forest health risks are not considered to be fatal to the long term success ofP. radiata in this area.展开更多
[Objective] This study aimed to select suitable cultivars of cut roses with prominent comprehensive performance which is suitable for the commercial promotion in the tropical region of South Hainan Province,including ...[Objective] This study aimed to select suitable cultivars of cut roses with prominent comprehensive performance which is suitable for the commercial promotion in the tropical region of South Hainan Province,including Sanya and the low-altitude area.[Method] Introduction experiment and production test were designed to observe the agronomic and economic traits of cultivars in a rose resources nursery established in Sanya.[Result] Through observation in the resources garden,18 varieties were chosen to conduct the introduction experiment,of which 8 varieties were selected to accomplish the production test.The results of the production test showed that ＇Vendela＇,＇Golden Emblem＇,＇Samantha＇ and ＇Tineke＇ showed the best adaptability;the cut flower quality of ＇Carola＇,＇Black Magic＇ and ＇Golden Emblem＇ belonged to the first grade;the yield of ＇Movie Star＇,＇Golden Emblem＇ and ＇Black Magic＇ was more than one million per hm2;except ＇Golden Emblem＇,the vase life of the other seven cultivars was more than 10 days;＇Carola＇,＇My Choice＇ and ＇Perfume White＇ had better disease-and insect-resistance;＇Carola＇,＇Vendela＇,＇Rouge Meilland＇,＇Tineke＇,＇Golden Emblem＇,＇Samantha＇,＇Perfume White＇,＇Saiun＇,＇Asagumo＇ and ＇Double Delight＇ were more resistant to blackspot,while ＇Black Magic＇,＇Versilla＇,＇Alec＇s Red＇ and ＇Movie Star＇ were less resistant to blackspot.[Conclusion] Cultivars of cut roses were able to grow and develop normally in the tropical coastal area of Hainan Province,including South Hainan and Sanya,where it was appropriate for the production of cut roses.However,it is necessary to pay attention to the prevention and control of thrips and blackspot.＇Black Magic＇,＇Carola＇,＇Vendela＇,＇Rouge Meilland＇,＇Golden Emblem＇,＇Tineke＇,＇Movie Star＇ and ＇Samantha＇ showed best comprehensive performance,which were thus worthy of large-scale popularization in Hainan Province.展开更多
基金funded by the National Key R&D Program of China(2022YFD1300803)the China Agriculture Research System of MOF and MARA(CARS-34)。
文摘Grain soybean(Glycine max(L.)Merr.)shows potential as a forage crop following its introduction from low to high latitudes due to in its growth phenotype.However,the application of this approach is impeded by the diverse ecological types of soybean,their adaptability to the introduction,and the uncertainty surrounding the growth phenotype post-introduction.This study introduced 24 grain soybean varieties from low-latitude regions(22-31°N)to the high-latitude northwestern Loess Plateau(39°N)between 2018 and 2019.The growth phenotypes were observed,and their forage productivity potential was assessed.All varieties displayed delayed flowering following cross-latitude introduction,with the vegetative growth phase of some varieties even exceeding their entire growth duration at their origin.Rapid dry matter accumulation rates indicated growth adaptation performance and formed the basis for soybean forage yield.Varieties from the tropical South China region exhibited significant yield advantages,with dry matter yields of 8.97-14.68 t ha^(-1)and crude protein yields of 1.44-2.51 t ha^(-1).Varieties HX3 and GX7 from this region demonstrated optimal growth adaptability and productivity in the cross-latitude environment,achieving the highest dry matter yields of 14.68 and 13.86 t ha^(-1),respectively.As a result,HX3 and GX7 are recommended for local farming systems to provide high-quality forage.The cross-latitude introduction of soybean is proposed as a viable and efficient strategy for forage improvement and application.
基金Supported by Gansu Provincial Key Talent Project(GZTZ20240415)The Central Financial Forestry Science and Technology Promotion Demonstration Fund Project(2024ZYTG04)+1 种基金Gansu Provincial Key Research and Development Program(25YFFA073)"Jiebangguashuai"Project for Key Technology Research and Development of the"Three North"Program of National Forestry and Grassland Administration(202401-05).
文摘[Objectives]Amygdalus tangutica is a new and excellent tree species for afforestation in arid areas of central China for soil and water conservation.It has the characteristics of drought resistance,cold resistance and tolerance to poor soil,and has strong ecological,landscape and economic value.To provide a theoretical basis for the propagation and application of A.tangutica in Minqin and similar arid sandy areas of Northwest China,this paper explored its introduction and cultivation technology through field experiments,considering the natural geographical conditions of the study area.[Methods]High-quality seeds were introduced from forest farms of Chankou Town,Anding District,Dingxi City,and Dian ga Town,Diebu County,Gannan Prefecture,and the introduction and cultivation experiments of A.tangutica were carried out in the greenhouse of Wuwei Oasis Station.[Results](1)Soaking treatment at different temperatures combined with gibberellin treatment and stratification germination could effectively break the dormancy of A.tangutica seeds,thereby accelerating germination and shortening the germination cycle.The germination peak appeared 15-20 d after sowing,and the final germination rate could reach about 50%.(2)In the introduction and cultivation of A.tangutica in arid areas,large fruit seeds with higher thousand-grain weight should be given priority.The emergence rate of large fruit seeds was significantly higher than that of small fruit seeds,with the highest reaching 57%,while the highest of small fruit seeds was only 20%.Soaking treatment at different temperatures had no significant difference in the germination performance and germination potential of A.tangutica seeds,but the germination index of large fruit seeds was higher than that of small fruit seeds.(3)Under the current conditions,seedling propagation is a reliable way to propagate A.tangutica in arid areas.The cutting propagation technology,particularly hardwood cutting which exhibits an extremely low survival rate,is not yet mature and is currently unsuitable for large-scale production.Consequently,future efforts should prioritize more in-depth research on softwood cutting techniques.[Conclusions]This study provides a theoretical foundation for the propagation and broader application of A.tangutica in Minqin and similar arid sandy areas of Northwest China.
基金2024 academic year’s teaching and research project of the college,“Exploration on the Construction of Ideological and Political Education in the High-Speed Railway Overview Course in Higher Vocational Colleges”(Project No.:LJZJY-2024-YB-03)。
文摘This paper focuses on the ideological and political construction of the“Introduction to High-Speed Railway”course in higher vocational colleges.Based on the national policy orientation of ideological and political education in courses and the talent demands of the high-speed railway industry,it comprehensively employs methods such as literature research and questionnaire surveys to analyze the current status and problems of ideological and political construction in the course.The research finds that there are issues such as insufficient in-depth exploration of ideological and political elements,inadequate teacher capabilities,monotonous teaching methods,and the absence of an evaluation system.In response to these problems,it proposes strategies such as deepening the exploration of ideological and political elements,enhancing teacher capabilities,innovating teaching methods,and improving the evaluation system.It aims to construct a collaborative system of“knowledge impartation+value guidance+practical education”,providing theoretical and practical references for the ideological and political construction of courses in higher vocational transportation-related majors.
文摘[Objective] This study aimed to preliminarily select the plants with colored foliage adaptable to Zhengzhou area. [Method] An introduction trial on 42 varieties with colored foliage was conducted, in which major ornamental characteristics, phenological phases and stress resistance of all the introduced plants with colored foliage were observed and the introduced plants were comprehensively evaluated. [Result] Golden-and Compound-leaved Maple, Red-leaved Sakura, Pink-and Compound-leaved Maple, Amur Maple, Purple-leaved Canadian Redbud with good performance were selected preliminarily, which can be applied for landscape in Zhengzhou area. Among them, Golden- and Compound-leaved Maple, Golden- and Silvery-leaved Maple and Purple-leaved Smoketree can either be planted separately, or in a line as boulevard trees, or in groups as ornamental forest; Red-leaved Sakura, Pink- and Compound-leaved Maple and Purple-leaved Canadian Redbud can be planted in groups or separately in gardens, parks or alongside streets or in front of buildings; Amur Maple with high adaptability is a excellent tree species for afforesting barren mountain. [Conclusion] This study has not only provided new excellent germplasm sources for the landscaping in Zhengzhou area, thus favoring the improvement of local landscaping level, but also provides examples and references for the introduction of plants with colored foliage in the other areas.
文摘Pinus radiata was introduced to the summer rainfall environments of Sichuan Province, China in the 1990s as a part of an afforestation pmgram for soil and water conservation in the arid and semi-arid river valley area of Aba Prefecture. Within this region a total area of 26 000 ha have been identified through climate matching as suitable and a further 63 000 ha potentially suitable for environmental plantings of P. radiata. The plantations are being established in widely separated small patches on steep and degraded slopes along the dry river valley The newly introduced P. radiata are exposed to two kinds of forest health risks： they may be attacked by （a） indigenous pathogens and pests against which they may not possess any resistance or （b） by inadvertently introduced foreign pests or pathogens. This paper presents a survey of the potential damaging pests and a preliminary assessment of forest health risks facing the P. radiata plantations over a much longer timeframe than the initial phase of introduction and early plantation establishment. An empirical appmach was adopted to evaluate forest health risks by a combination of literature review, examination of historical records of pest and disease outbreaks in the surrounding conifemus forests, field surveys and inspections, specimen collection and identification, and most importantly, expert analysis of the likelihood of attack by specific pests and pathogens and the subsequent impact of such attacks. The assessment identified some specific forest health risks to the long-term success of P. radiata introduction in this area. These risks are closely associated with the indigenous pests and pathogens of the two native pine species, P. tabulaeformis and P. armondii since these pests and pathogens are considered more likely to establish on P. radiata over time. Exotic pests and pathogens are of a quarantine concern at present. Based on the results of assessment, recommendations are pmvided to improve forest vigour and to reduce the forest health risks posed by indigenous as well as exotic pests and pathogens to the introduced P. radiata. Ways to increase the ability to manage the forest health risks once a particular pest infestation and disease eventuates are also recommended. Although detrimental to the survival and growth of the introduced P. radiata, the impact of identified forest health risks are not considered to be fatal to the long term success ofP. radiata in this area.
基金Supported by the National Agricultural Sci-Tech Achievements Transformation Projects(2010GB2E200369)the National Spark Program Project(2011GA800004)~~
文摘[Objective] This study aimed to select suitable cultivars of cut roses with prominent comprehensive performance which is suitable for the commercial promotion in the tropical region of South Hainan Province,including Sanya and the low-altitude area.[Method] Introduction experiment and production test were designed to observe the agronomic and economic traits of cultivars in a rose resources nursery established in Sanya.[Result] Through observation in the resources garden,18 varieties were chosen to conduct the introduction experiment,of which 8 varieties were selected to accomplish the production test.The results of the production test showed that ＇Vendela＇,＇Golden Emblem＇,＇Samantha＇ and ＇Tineke＇ showed the best adaptability;the cut flower quality of ＇Carola＇,＇Black Magic＇ and ＇Golden Emblem＇ belonged to the first grade;the yield of ＇Movie Star＇,＇Golden Emblem＇ and ＇Black Magic＇ was more than one million per hm2;except ＇Golden Emblem＇,the vase life of the other seven cultivars was more than 10 days;＇Carola＇,＇My Choice＇ and ＇Perfume White＇ had better disease-and insect-resistance;＇Carola＇,＇Vendela＇,＇Rouge Meilland＇,＇Tineke＇,＇Golden Emblem＇,＇Samantha＇,＇Perfume White＇,＇Saiun＇,＇Asagumo＇ and ＇Double Delight＇ were more resistant to blackspot,while ＇Black Magic＇,＇Versilla＇,＇Alec＇s Red＇ and ＇Movie Star＇ were less resistant to blackspot.[Conclusion] Cultivars of cut roses were able to grow and develop normally in the tropical coastal area of Hainan Province,including South Hainan and Sanya,where it was appropriate for the production of cut roses.However,it is necessary to pay attention to the prevention and control of thrips and blackspot.＇Black Magic＇,＇Carola＇,＇Vendela＇,＇Rouge Meilland＇,＇Golden Emblem＇,＇Tineke＇,＇Movie Star＇ and ＇Samantha＇ showed best comprehensive performance,which were thus worthy of large-scale popularization in Hainan Province.
