Selenium is an essential functional element of the human body,and the issue of selenium accompanying heavy metals is receiving much concern.This paper expounded the form of existence of selenium and cadmium in soil an...Selenium is an essential functional element of the human body,and the issue of selenium accompanying heavy metals is receiving much concern.This paper expounded the form of existence of selenium and cadmium in soil and influencing factors of their bioavailability,and further elaborated the interaction between selenium and cadmium.On the basis,it provided references for further studies on the interaction between selenium and cadmium,and provided basis for establishing selenium-enriched barrier technology for crops.展开更多
[Objectives]This study was conducted to explore the treatment methods of amino acid selenium fertilizer suitable for increasing the selenium content of mangoes and improving the quality of mangoes,so as to provide a t...[Objectives]This study was conducted to explore the treatment methods of amino acid selenium fertilizer suitable for increasing the selenium content of mangoes and improving the quality of mangoes,so as to provide a theoretical basis for the production of selenium-enriched mangoes.[Methods]With Tainong mango as a test material,the amino acid selenium foliar fertilizer was applied by eight treatment methods to investigate the changes of selenium,soluble solid,vitamin C,and titratable acid contents in mango flesh and peel.[Results]Spraying amino acid selenium foliar fertilizer increased the selenium content of mango flesh.The selenium contents of the treatment groups T2,T3,T4 and T5 reached the selenium-enriched standard,and the T2 treatment group had the highest selenium content(0.020 mg/kg).The selenium contents in the peel of all treatment groups were greater than the corresponding selenium content in the flesh.Except for T1,the vitamin C contents of other treatment groups sprayed with amino acid selenium fertilizer increased compared with the control,and that of the T2 treatment group increased significantly(P<0.05).Compared with the control,the soluble solids of the treatment groups sprayed with amino acid selenium fertilizer once also increased.The treatment method of spraying amino acid selenium fertilizer with a dosage of 12000 ml/hm2 once(T2)achieved the best effect of increasing the selenium content and improving the quality of mangoes.[Conclusions]This study provides a scientific basis for increasing the selenium content of mangoes and improving the current situation of insufficient selenium intake.展开更多
The problems faced by the development of Guangshan County were analyzed from the aspects of rural management talents,industrial structure,e-commerce development,and farmers'ideology,and corresponding solutions wer...The problems faced by the development of Guangshan County were analyzed from the aspects of rural management talents,industrial structure,e-commerce development,and farmers'ideology,and corresponding solutions were proposed to improve the development speed of rural areas in the county and promote the high-quality development of the county as a whole.展开更多
[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium prot...[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium protein resources. [Methods]Selenium-enriched rice was used as materials to extract selenoproteins by phosphate buffer extraction method and to optimize the extraction process of selenoproteins by using the orthogonal experiment. Proteins and selenium content was measured by Coomassie Brilliant Blue G-250 reagent and AFS（ atomic fluorescence spectrometry） respectively. [Results] The most significant factor affecting extraction of rice Selenoproteins was extraction NaO H concentration,followed by the ratio of solid-liquid,temperature and then extraction time. The optimum extraction conditions of selenoproteins from rice were extraction temperature of 50 ℃,NaO H concentration of 0. 14 mol/L,extraction time of 5 h,and solid-liquid ratio of 1∶ 30. [Conclusions]The alkali extraction process optimized by orthogonal test could effectively improve the extraction rate of selenoproteins,and the optimized process parameters could be popularized and applied in practical production.展开更多
Clay minerals,phosphates,alkaline materials,organic materials are common improvers in the management of Cd polluted soil. This paper systematically summarized types of common soil improvers and their passivation mecha...Clay minerals,phosphates,alkaline materials,organic materials are common improvers in the management of Cd polluted soil. This paper systematically summarized types of common soil improvers and their passivation mechanism of Cd in soil. It reviewed advances in researches of soil improvers. Besides,it introduced major problems in four common passivating agents for management of Cd polluted soil. Finally,according to different mechanism characteristics of passivating agents,it came up with some recommendations.展开更多
Since the implementation of the rural revitalization strategy,it has provided multiple assistance for the development of the vast number of villages in China.Talents are the key to the revitalization and development o...Since the implementation of the rural revitalization strategy,it has provided multiple assistance for the development of the vast number of villages in China.Talents are the key to the revitalization and development of the countryside.Only when a large number of high-quality talents take root in the countryside and help the rural construction in different fields can we give full play to the role of talents in promoting rural development.This paper takes the rural areas of China as the research object,analyzes the current situation of the development of rural talents,discusses the problems existing in the development of rural human resources,and puts forward effective measures for the revitalization of rural talents,to provide a solid theoretical basis for the better development of the countryside.展开更多
At present,rural e-commerce is characterized by obvious improvement in market prospect,development scale and development momentum,but there are also some problems,such as farmers’low acceptance of e-commerce,lack of ...At present,rural e-commerce is characterized by obvious improvement in market prospect,development scale and development momentum,but there are also some problems,such as farmers’low acceptance of e-commerce,lack of promotion and training of rural e-commerce,and lack of rural e-commerce talents.Based on these problems,the government needs to increase financial support for rural e-commerce,improve the distribution logistics system,and strengthen the training of rural e-commerce personnel to promote the sustainable development of rural e-commerce.展开更多
With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also t...With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also the largest natural selenium-rich region in the country, and selenium-enriched pitaya is increasingly sought after by the general public. This paper described in detail the selection of selenium-enriched pitaya production fields, key planting techniques and core selenium enrichment techniques, with a view to providing technical guidance for the standardized production of selenium-enriched pitaya and providing technical support for improving the quality and efficiency of pitaya production in natural selenium-rich areas.展开更多
基金Supported by National Key Research and Development Program(2016YED-0800705-01)Key Research and Development Program of Guangxi(Gui Ke AB16380084 and Gui Ke AB16380088)+7 种基金Scientific Research and Technological Development Program Project of Guangxi Province(Gui Ke He 415104001-22)Key Agricultural Science and Technology Program of Guangxi(201528,201604)Selenium-enriched Specialty Crop Experimental Station of Guangxi(Gui TS2016011)Scientific Research and Technological Development Program Project of Nanning City(20162105,0152054-13)Scientific Development Fund Project of Guangxi Academy of Agricultural Sciences(2017JM07)Special Basic Scientific Research Project of Guangxi Academy of Agricultural Sciences(Gui Nong Ke 2017YZ03)Key Research and Development Program of Qingxiu District of Nanning City(2016039)Scientific Research and Technological Development Program of Xixiangtang District of Nanning City(2015312)
文摘Selenium is an essential functional element of the human body,and the issue of selenium accompanying heavy metals is receiving much concern.This paper expounded the form of existence of selenium and cadmium in soil and influencing factors of their bioavailability,and further elaborated the interaction between selenium and cadmium.On the basis,it provided references for further studies on the interaction between selenium and cadmium,and provided basis for establishing selenium-enriched barrier technology for crops.
基金Guangxi Science and Technology Major Project(GK AA17202037-2,GK AA17202026)Guangxi Mango Innovation Team Cultivation Post Project of National Modern Agriculture Industrial Technology System(nycytxgxcxtd-06-02)+4 种基金Special Fund of Central Government for Local Science and Technology Development(GK ZY19183007)Special Action of the Science and Technology Vanguard of Guangxi Academy of Agricultural Sciences(GNK JZ202016)Guangxi Key R&D Program(GK AB16380164)Guangxi Selenium-enriched Crop Experiment Station(GTS2016011)Fundamental Scientific Research Fund of Guangxi Academy of Agricultural Sciences(GNK 2020YM109)。
文摘[Objectives]This study was conducted to explore the treatment methods of amino acid selenium fertilizer suitable for increasing the selenium content of mangoes and improving the quality of mangoes,so as to provide a theoretical basis for the production of selenium-enriched mangoes.[Methods]With Tainong mango as a test material,the amino acid selenium foliar fertilizer was applied by eight treatment methods to investigate the changes of selenium,soluble solid,vitamin C,and titratable acid contents in mango flesh and peel.[Results]Spraying amino acid selenium foliar fertilizer increased the selenium content of mango flesh.The selenium contents of the treatment groups T2,T3,T4 and T5 reached the selenium-enriched standard,and the T2 treatment group had the highest selenium content(0.020 mg/kg).The selenium contents in the peel of all treatment groups were greater than the corresponding selenium content in the flesh.Except for T1,the vitamin C contents of other treatment groups sprayed with amino acid selenium fertilizer increased compared with the control,and that of the T2 treatment group increased significantly(P<0.05).Compared with the control,the soluble solids of the treatment groups sprayed with amino acid selenium fertilizer once also increased.The treatment method of spraying amino acid selenium fertilizer with a dosage of 12000 ml/hm2 once(T2)achieved the best effect of increasing the selenium content and improving the quality of mangoes.[Conclusions]This study provides a scientific basis for increasing the selenium content of mangoes and improving the current situation of insufficient selenium intake.
基金Supported by National Natural Science Foundation of China (31601235)CSC Scholarship (Overseas Training Program for Young Backbone Teachers in Colleges and Universities,No. 201806665009)+1 种基金Guangxi Natural Science Foundation (2017GXNSFBA198241)Bossco Innovative Talents Training Project for Young Teachers (BRP180251)
文摘The problems faced by the development of Guangshan County were analyzed from the aspects of rural management talents,industrial structure,e-commerce development,and farmers'ideology,and corresponding solutions were proposed to improve the development speed of rural areas in the county and promote the high-quality development of the county as a whole.
基金Supported by the Science and Technology Major Project of Guangxi(Guike AA17202026)Program for Scientific Research and Technology Development in Xixiangtant District of Nanning City(201710304)+7 种基金the Special Fund for the Innovation-Driven Development in Guangxi(Guike AA17202019-4&AA17202019)the Science and Technology Development Fund of Guangxi Academy of Agricultural Sciences(Guinongke 2017JM03)the Program for the Scientific Research and Technology Development in Guangxi(Guikehe415104001-22)the Fundamental Research Funds for Guangxi Academy of Agricultural Sciences(Guinongke 2017YZ03)the Key Research and Development Program of Guangxi(Guike AB16380088)the Experiment Station for Selenium Featured Crops in Guangxi(Gui TS2016011)the Key Research and Development Program of Qingxiu District,Guangxi(2016039)the Scientific and Technological Transformative Project of Guangxi Academy of Agricultural Sciences(NO.2017NZ04)
文摘[Objectives] The aims were to optimize the extraction process of selenoproteins from selenium-enriched rice in Guangxi and provide references for the intensive processing and comprehensive utilization of selenium protein resources. [Methods]Selenium-enriched rice was used as materials to extract selenoproteins by phosphate buffer extraction method and to optimize the extraction process of selenoproteins by using the orthogonal experiment. Proteins and selenium content was measured by Coomassie Brilliant Blue G-250 reagent and AFS（ atomic fluorescence spectrometry） respectively. [Results] The most significant factor affecting extraction of rice Selenoproteins was extraction NaO H concentration,followed by the ratio of solid-liquid,temperature and then extraction time. The optimum extraction conditions of selenoproteins from rice were extraction temperature of 50 ℃,NaO H concentration of 0. 14 mol/L,extraction time of 5 h,and solid-liquid ratio of 1∶ 30. [Conclusions]The alkali extraction process optimized by orthogonal test could effectively improve the extraction rate of selenoproteins,and the optimized process parameters could be popularized and applied in practical production.
基金Supported by National Key Research and Development Program(2016YED0800705-01)Key Research and Development Program of Guangxi(Gui Ke AB16380084)+2 种基金Key Agricultural Science and Technology Program of Guangxi(201528,201604)Scientific Research and Technological Development Program Project of Nanning City(20162105)Scientific Development Fund Project of Guangxi Academy of Agricultural Sciences(Gui Nong Ke2017JM06,2017JM07)
文摘Clay minerals,phosphates,alkaline materials,organic materials are common improvers in the management of Cd polluted soil. This paper systematically summarized types of common soil improvers and their passivation mechanism of Cd in soil. It reviewed advances in researches of soil improvers. Besides,it introduced major problems in four common passivating agents for management of Cd polluted soil. Finally,according to different mechanism characteristics of passivating agents,it came up with some recommendations.
基金National Natural Science Foundation of China(31601235)Guangxi Natural Science Foundation(2017GXNSFBA198241)+3 种基金Bossco Innovative Talents Training Project for Young Teachers(BRP180251)Guangxi Innovation-driven Development Project(GuiKeAA17204043)Science and Technology Vanguard Special Project of Guangxi Academy of Agricultural Sciences(GuiNongKeMeng202114)Guangxi Selenium-rich Characteristic Crop Experimental Station Project(GuiTS2016011).
文摘Since the implementation of the rural revitalization strategy,it has provided multiple assistance for the development of the vast number of villages in China.Talents are the key to the revitalization and development of the countryside.Only when a large number of high-quality talents take root in the countryside and help the rural construction in different fields can we give full play to the role of talents in promoting rural development.This paper takes the rural areas of China as the research object,analyzes the current situation of the development of rural talents,discusses the problems existing in the development of rural human resources,and puts forward effective measures for the revitalization of rural talents,to provide a solid theoretical basis for the better development of the countryside.
基金Supported by National Natural Science Foundation of China(31601235)CSC Scholarship(Overseas training program for young backbone teachers in Colleges and Universities,No.201806665009)+1 种基金Guangxi Natural Science Foundation(2017GXNSFBA198241)Bossco Innovative Talents Training Project for Young Teachers(BRP180251)。
文摘At present,rural e-commerce is characterized by obvious improvement in market prospect,development scale and development momentum,but there are also some problems,such as farmers’low acceptance of e-commerce,lack of promotion and training of rural e-commerce,and lack of rural e-commerce talents.Based on these problems,the government needs to increase financial support for rural e-commerce,improve the distribution logistics system,and strengthen the training of rural e-commerce personnel to promote the sustainable development of rural e-commerce.
基金Supported by Guangxi Innovation-driven Development Science and Technology Major Project(GK AA17202026,GK AA17202037)Scientific Research and Technology Development Program of Nanning City(20182100)+2 种基金Guangxi Key Research and Development Program(GK AB16380164)Guangxi Selenium-enriched Crop Experiment Station(GTS2016011)Fundamental Scientific Research Fund of Guangxi Academy of Agricultural Sciences(GNK 2017YZ03)
文摘With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also the largest natural selenium-rich region in the country, and selenium-enriched pitaya is increasingly sought after by the general public. This paper described in detail the selection of selenium-enriched pitaya production fields, key planting techniques and core selenium enrichment techniques, with a view to providing technical guidance for the standardized production of selenium-enriched pitaya and providing technical support for improving the quality and efficiency of pitaya production in natural selenium-rich areas.
