Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2...Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2015 -2016. The results showed, in severe saline-alkali soil of Xin-jiang ,after growing cotton by smashing ridging, total salt in soil decreased by 31.31 %, cotton production increased by 48.80%, and salinity level declined from severe to moderate; in mild saline-alkali soil of Shaanxi, after growing summer corn by smashing ridging, total salt in soil decreased by 42.37%, corn yield increased by 34.83%, salinity degree changed from mild desalination to normal farmland ; in Ningxia, Inner Mongolia 7 Gansu ,Jilin, Henan, Hebei, and so on, smashing ridging tillage practice in different types of saline-alkali land was conducted ; according to the salt reduction and yield increase effects of saline-alkali land after smashing ridging, the development prospect of smashing ridging technique in improvement and application of saline-alkali land was proposed.展开更多
In the traditional blast furnace(BF)ironmaking process in China,a notable deviation exists between the theoretical and actual yield of hot metal,leading to unexpected iron loss and restricting the improvement of produ...In the traditional blast furnace(BF)ironmaking process in China,a notable deviation exists between the theoretical and actual yield of hot metal,leading to unexpected iron loss and restricting the improvement of production capacity,which cannot adapt to the increasingly intensified smelting rhythm.Focusing on a BF in a Chinese steel enterprise,a deep neural network algorithm was designed to model the impact of multiple parameters on actual yield of hot metal in a single BF smelting cycle,successfully accomplishing the theoretical computation and real-time prediction of yield of hot metal for subsequent,unknown BF smelting cycle.Test results show that the proposed algorithm demonstrates an impressive prediction accuracy of 86.7% within an error range of±10 t and can swiftly complete the training and convergence process in 32.5 s.By integrating prediction results with Nomogram,a regulatory mechanism was engineered to minimize the deviation between theoretical and actual yield of hot metal.This mechanism ensures the yield enhancement of hot metal through dynamic adjustments of BF operational parameters.Industrial-scale application experiments confirmed that the intelligent operation and optimization system,developed in the laboratory,can maintain the yield deviation of hot metal within a stable range of 30 t,achieving a maximum reduction in iron loss rate of 17.65%compared to that before system operation.The findings provide robust support for the yield increase and efficiency improvement of the experimental BF.展开更多
The potential of yield increase in the North China Plain is about 30 billion kg by ameliorating the low yield and medium low yield farmlands and 4 billion kg by reclaiming unused land. Water shortage will be the main ...The potential of yield increase in the North China Plain is about 30 billion kg by ameliorating the low yield and medium low yield farmlands and 4 billion kg by reclaiming unused land. Water shortage will be the main limitation to the further increase of grain crop yield. The amount of water shortage is 8 200 million m3 at present, and will be 17 720 million m3 in 2 000. Yield increase can not be realized by using more water in the future. Other factors such as decrease of the area of cultivated land and the grain crop growing area, deterioration of environment and destruction of resources will also affect the development of grain production. Some suggestions have been proposed in the paper for attaining sustainable increase of yield in the plain.展开更多
Fenlong farming technology was introduced. It has characteristics of very deep tillage and evenly smashing soil,and can evenly smash soil without disturbing soil layers to complete the task of soil preparation. It can...Fenlong farming technology was introduced. It has characteristics of very deep tillage and evenly smashing soil,and can evenly smash soil without disturbing soil layers to complete the task of soil preparation. It can be widely used in cultivated land,saline-alkali land,lime concretion black soil,degraded grassland,etc. After the application of the technology in 34 crops in 24 provinces,it can increase yield by 10%-50% and improve quality by above 5%. Fenlong technology can increase soil reservoir capacity,enhance the infiltration rate of rainwater in soil and make " surplus" effect obvious. If the country plans and promotes the technology in 160 million hm^2 of land( including 67 million hm^2 of cultivated land,20 million hm^2 of saline-alkali land,6. 7 million hm^2 of marginal land and 67 million hm^2 of degraded grassland),the total volume of loosened soil in arable land will increase from 198. 1 billion to 840. 0 billion m^3,and the capacity of a " underground reservoir" will increase by 675 million m^3,while natural precipitation reserves will increase by 162 billion m^3. It can effectively solve food security problems and water resource problems such as drought,floods,and industrial,agricultural and domestic water shortages,as well as serious disaster hazards caused by groundwater that has been evacuated in China.展开更多
Core theory and acting force("physical fertility") of Fenlong are firstly proposed,and "physical fertility of Fenlong" is relative to the fertility of chemical fertilizer of increasing crop yield. ...Core theory and acting force("physical fertility") of Fenlong are firstly proposed,and "physical fertility of Fenlong" is relative to the fertility of chemical fertilizer of increasing crop yield. Basic composition of "physical fertility of Fenlong" and its effect of increasing production and improving quality of various agricultural crops are clarified. It makes crop yield increase by 15%-30% without fertilization and 15%-50% by not increasing fertilization amount and irrigation water consumption. It is proposed that "physical fertility of Fenlong" could be sufficiently excavated in the new times of green development. Fenlong has a key significance for rationally reducing chemical fertilizer,soil,water and air pollution,agricultural cost,improving the quality of agricultural products and human health level.展开更多
In line with the author’s long-time experience on soil reconnaissance, monitoring and scientific probes, this article expounds the vital significance in systematic build-up of pedological data, protection of arable l...In line with the author’s long-time experience on soil reconnaissance, monitoring and scientific probes, this article expounds the vital significance in systematic build-up of pedological data, protection of arable land, employment and renovation of the farmland soil in accordance with the local edaphic setting in a bid to increase the grain yield.展开更多
After insufflating extended endophytes phomopsis B3 ferment diluent on seedling bed of rice, the effect of microbial inoculum on rice growth was studied. The investigation result of seedlings before transplanting seed...After insufflating extended endophytes phomopsis B3 ferment diluent on seedling bed of rice, the effect of microbial inoculum on rice growth was studied. The investigation result of seedlings before transplanting seedling showed that leaf age,the number of green leaves,the number of tiller of individual plant and the weight of per 100 fresh plants in microbial inoculum treatment group increased 0.11,0.12 ,0. 03 and 2.6 g respectively compared with those of control group. 20 days after transplanting, increased tiller number in microbial inoculum treatment group was 55 500 hm^2 more than that in control group. 30 days after transplanting, tiller number in microbial inoculum treatment group was 42 000 hm^2 more than that in control group. In harvest season, the yield ,weight of I 0130 grain and seed-setting rate increased 300 kg/hm2, 0. 7 g and 0. 23% respectively compared with these in control group. The result of preliminary study demonstrated that microbial inoculum confected by endophytes phomopsis B3 could increase the number of strong seedling and yield.展开更多
种植密度和氮肥用量显著影响玉米产量和品质形成,优化施氮量和种植密度是玉米增产提质的重要技术途径,但在新疆南疆干旱区如何优化种植密度和氮肥管理尚缺少研究。为此,本试验于2024年通过设置4个种植密度(D9:9.0×10^(4)株∕hm^(2)...种植密度和氮肥用量显著影响玉米产量和品质形成,优化施氮量和种植密度是玉米增产提质的重要技术途径,但在新疆南疆干旱区如何优化种植密度和氮肥管理尚缺少研究。为此,本试验于2024年通过设置4个种植密度(D9:9.0×10^(4)株∕hm^(2),D12:1.2×10^(5)株∕hm^(2),D15:1.5×10^(5)株∕hm^(2)和D18:1.8×10^(5)株∕hm^(2))和4个施氮水平(N0:0 kg∕hm^(2),N180:180 kg N∕hm^(2),N270:270 kg N∕hm^(2)和N360:360 kg N∕hm^(2)),研究了种植密度和氮肥用量及其互作对玉米籽粒产量、籽粒品质、氮肥偏生产力(NPEP)和氮肥农学利用效率(NAE)的影响。结果表明,D15N270、D18N270、D15N360和D18N360表现出较高的玉米产量,且4个处理组合之间不存在显著性差异,较D9N0、D12N0、D15N0、D18N0、D9N180、D12N180、D15N180、D18N180、D9N270、D12N270、D9N360和D12N360处理组合分别增产3.8%~74.3%、2.4%~72.0%、10.5%~85.7%和9.4%~83.9%。D15N270较其他处理组合改善了玉米籽粒品质(蛋白、脂肪、淀粉含量)。增密提高了玉米氮肥利用效率,随着施氮量的增加氮肥偏生产力呈下降趋势,D15N270和D18N270处理下的氮肥农学利用效率高于其他处理组合。综合考虑,种植密度设为1.5×10^(5)株∕hm^(2)、施氮量设为270 kg∕hm^(2)左右是阿拉尔垦区提高玉米产量、品质及氮肥利用效率的有效管理方案。展开更多
The polyurethane foam(PU)compressible layer is a viable solution to the problem of damage to the secondary lining in squeezing tunnels.Nevertheless,the mechanical behaviour of the multi-layer yielding supports has not...The polyurethane foam(PU)compressible layer is a viable solution to the problem of damage to the secondary lining in squeezing tunnels.Nevertheless,the mechanical behaviour of the multi-layer yielding supports has not been thoroughly investigated.To fill this gap,large-scale model tests were conducted in this study.The synergistic load-bearing mechanics were analyzed using the convergenceconfinement method.Two types of multi-layer yielding supports with different thicknesses(2.5 cm,3.75 cm and 5 cm)of PU compressible layers were investigated respectively.Digital image correlation(DIC)analysis and acoustic emission(AE)techniques were used for detecting the deformation fields and damage evolution of the multi-layer yielding supports in real-time.Results indicated that the loaddisplacement relationship of the multi-layer yielding supports could be divided into the crack initiation,crack propagation,strain-hardening,and failure stages.Compared with those of the stiff support,the toughness,deformability and ultimate load of the yielding supports were increased by an average of 225%,61%and 32%,respectively.Additionally,the PU compressible layer is positioned between two primary linings to allow the yielding support to have greater mechanical properties.The analysis of the synergistic bearing effect suggested that the thickness of PU compressible layer and its location significantly affect the mechanical properties of the yielding supports.The use of yielding supports with a compressible layer positioned between the primary and secondary linings is recommended to mitigate the effects of high geo-stress in squeezing tunnels.展开更多
基金Supported by National Science and Technology Support Program(2014BAD06B05)
文摘Using smashing ridging tillage machine and smashing ridging technology invented by the authors, transformation test of saline-alkali land by smashing ridging was conducted respectively in Xinjiang and Shaanxi during 2015 -2016. The results showed, in severe saline-alkali soil of Xin-jiang ,after growing cotton by smashing ridging, total salt in soil decreased by 31.31 %, cotton production increased by 48.80%, and salinity level declined from severe to moderate; in mild saline-alkali soil of Shaanxi, after growing summer corn by smashing ridging, total salt in soil decreased by 42.37%, corn yield increased by 34.83%, salinity degree changed from mild desalination to normal farmland ; in Ningxia, Inner Mongolia 7 Gansu ,Jilin, Henan, Hebei, and so on, smashing ridging tillage practice in different types of saline-alkali land was conducted ; according to the salt reduction and yield increase effects of saline-alkali land after smashing ridging, the development prospect of smashing ridging technique in improvement and application of saline-alkali land was proposed.
基金the financial supports from the National Natural Science Foundation of China(52004096)Natural Science Foundation of Hebei Province(E2024209101)+2 种基金Hebei Province Science and Technology R&D Platform Construction Project(23560301D)Tangshan Science and Technology Bureau Project(23130202E)Graduate Student Innovation Fund of North China University of Science and Technology(CXZZBS2025150).
文摘In the traditional blast furnace(BF)ironmaking process in China,a notable deviation exists between the theoretical and actual yield of hot metal,leading to unexpected iron loss and restricting the improvement of production capacity,which cannot adapt to the increasingly intensified smelting rhythm.Focusing on a BF in a Chinese steel enterprise,a deep neural network algorithm was designed to model the impact of multiple parameters on actual yield of hot metal in a single BF smelting cycle,successfully accomplishing the theoretical computation and real-time prediction of yield of hot metal for subsequent,unknown BF smelting cycle.Test results show that the proposed algorithm demonstrates an impressive prediction accuracy of 86.7% within an error range of±10 t and can swiftly complete the training and convergence process in 32.5 s.By integrating prediction results with Nomogram,a regulatory mechanism was engineered to minimize the deviation between theoretical and actual yield of hot metal.This mechanism ensures the yield enhancement of hot metal through dynamic adjustments of BF operational parameters.Industrial-scale application experiments confirmed that the intelligent operation and optimization system,developed in the laboratory,can maintain the yield deviation of hot metal within a stable range of 30 t,achieving a maximum reduction in iron loss rate of 17.65%compared to that before system operation.The findings provide robust support for the yield increase and efficiency improvement of the experimental BF.
文摘The potential of yield increase in the North China Plain is about 30 billion kg by ameliorating the low yield and medium low yield farmlands and 4 billion kg by reclaiming unused land. Water shortage will be the main limitation to the further increase of grain crop yield. The amount of water shortage is 8 200 million m3 at present, and will be 17 720 million m3 in 2 000. Yield increase can not be realized by using more water in the future. Other factors such as decrease of the area of cultivated land and the grain crop growing area, deterioration of environment and destruction of resources will also affect the development of grain production. Some suggestions have been proposed in the paper for attaining sustainable increase of yield in the plain.
基金Supported by the Special Project for Innovation-driven Development of Guangxi(Guike AA17204037)
文摘Fenlong farming technology was introduced. It has characteristics of very deep tillage and evenly smashing soil,and can evenly smash soil without disturbing soil layers to complete the task of soil preparation. It can be widely used in cultivated land,saline-alkali land,lime concretion black soil,degraded grassland,etc. After the application of the technology in 34 crops in 24 provinces,it can increase yield by 10%-50% and improve quality by above 5%. Fenlong technology can increase soil reservoir capacity,enhance the infiltration rate of rainwater in soil and make " surplus" effect obvious. If the country plans and promotes the technology in 160 million hm^2 of land( including 67 million hm^2 of cultivated land,20 million hm^2 of saline-alkali land,6. 7 million hm^2 of marginal land and 67 million hm^2 of degraded grassland),the total volume of loosened soil in arable land will increase from 198. 1 billion to 840. 0 billion m^3,and the capacity of a " underground reservoir" will increase by 675 million m^3,while natural precipitation reserves will increase by 162 billion m^3. It can effectively solve food security problems and water resource problems such as drought,floods,and industrial,agricultural and domestic water shortages,as well as serious disaster hazards caused by groundwater that has been evacuated in China.
基金Supported by Special Fund for Guangxi Innovation Driven Development(Guike AA17204037)Key Program of Guangxi Science and Technology(Guike AA16380017)Team Program of Guangxi Academy of Agricultural Sciences(2015YT60)
文摘Core theory and acting force("physical fertility") of Fenlong are firstly proposed,and "physical fertility of Fenlong" is relative to the fertility of chemical fertilizer of increasing crop yield. Basic composition of "physical fertility of Fenlong" and its effect of increasing production and improving quality of various agricultural crops are clarified. It makes crop yield increase by 15%-30% without fertilization and 15%-50% by not increasing fertilization amount and irrigation water consumption. It is proposed that "physical fertility of Fenlong" could be sufficiently excavated in the new times of green development. Fenlong has a key significance for rationally reducing chemical fertilizer,soil,water and air pollution,agricultural cost,improving the quality of agricultural products and human health level.
文摘In line with the author’s long-time experience on soil reconnaissance, monitoring and scientific probes, this article expounds the vital significance in systematic build-up of pedological data, protection of arable land, employment and renovation of the farmland soil in accordance with the local edaphic setting in a bid to increase the grain yield.
基金Supported by the National Natural Science Foundation of China(30770073,30500066)~~
文摘After insufflating extended endophytes phomopsis B3 ferment diluent on seedling bed of rice, the effect of microbial inoculum on rice growth was studied. The investigation result of seedlings before transplanting seedling showed that leaf age,the number of green leaves,the number of tiller of individual plant and the weight of per 100 fresh plants in microbial inoculum treatment group increased 0.11,0.12 ,0. 03 and 2.6 g respectively compared with those of control group. 20 days after transplanting, increased tiller number in microbial inoculum treatment group was 55 500 hm^2 more than that in control group. 30 days after transplanting, tiller number in microbial inoculum treatment group was 42 000 hm^2 more than that in control group. In harvest season, the yield ,weight of I 0130 grain and seed-setting rate increased 300 kg/hm2, 0. 7 g and 0. 23% respectively compared with these in control group. The result of preliminary study demonstrated that microbial inoculum confected by endophytes phomopsis B3 could increase the number of strong seedling and yield.
文摘种植密度和氮肥用量显著影响玉米产量和品质形成,优化施氮量和种植密度是玉米增产提质的重要技术途径,但在新疆南疆干旱区如何优化种植密度和氮肥管理尚缺少研究。为此,本试验于2024年通过设置4个种植密度(D9:9.0×10^(4)株∕hm^(2),D12:1.2×10^(5)株∕hm^(2),D15:1.5×10^(5)株∕hm^(2)和D18:1.8×10^(5)株∕hm^(2))和4个施氮水平(N0:0 kg∕hm^(2),N180:180 kg N∕hm^(2),N270:270 kg N∕hm^(2)和N360:360 kg N∕hm^(2)),研究了种植密度和氮肥用量及其互作对玉米籽粒产量、籽粒品质、氮肥偏生产力(NPEP)和氮肥农学利用效率(NAE)的影响。结果表明,D15N270、D18N270、D15N360和D18N360表现出较高的玉米产量,且4个处理组合之间不存在显著性差异,较D9N0、D12N0、D15N0、D18N0、D9N180、D12N180、D15N180、D18N180、D9N270、D12N270、D9N360和D12N360处理组合分别增产3.8%~74.3%、2.4%~72.0%、10.5%~85.7%和9.4%~83.9%。D15N270较其他处理组合改善了玉米籽粒品质(蛋白、脂肪、淀粉含量)。增密提高了玉米氮肥利用效率,随着施氮量的增加氮肥偏生产力呈下降趋势,D15N270和D18N270处理下的氮肥农学利用效率高于其他处理组合。综合考虑,种植密度设为1.5×10^(5)株∕hm^(2)、施氮量设为270 kg∕hm^(2)左右是阿拉尔垦区提高玉米产量、品质及氮肥利用效率的有效管理方案。
基金supported by the National Key Research and Development Program of China (Grant No.2021YFB2600800)the National Key Research and Development 451 Program of China (Grant No.2021YFC3100803)the Guangdong Innovative and Entrepreneurial Research Team Program (Grant No.2016ZT06N340).
文摘The polyurethane foam(PU)compressible layer is a viable solution to the problem of damage to the secondary lining in squeezing tunnels.Nevertheless,the mechanical behaviour of the multi-layer yielding supports has not been thoroughly investigated.To fill this gap,large-scale model tests were conducted in this study.The synergistic load-bearing mechanics were analyzed using the convergenceconfinement method.Two types of multi-layer yielding supports with different thicknesses(2.5 cm,3.75 cm and 5 cm)of PU compressible layers were investigated respectively.Digital image correlation(DIC)analysis and acoustic emission(AE)techniques were used for detecting the deformation fields and damage evolution of the multi-layer yielding supports in real-time.Results indicated that the loaddisplacement relationship of the multi-layer yielding supports could be divided into the crack initiation,crack propagation,strain-hardening,and failure stages.Compared with those of the stiff support,the toughness,deformability and ultimate load of the yielding supports were increased by an average of 225%,61%and 32%,respectively.Additionally,the PU compressible layer is positioned between two primary linings to allow the yielding support to have greater mechanical properties.The analysis of the synergistic bearing effect suggested that the thickness of PU compressible layer and its location significantly affect the mechanical properties of the yielding supports.The use of yielding supports with a compressible layer positioned between the primary and secondary linings is recommended to mitigate the effects of high geo-stress in squeezing tunnels.
