After the sewage treatment, putting the wet sludge in which the heavy metal content is extremely low, corrupt and broken straw, bentonite, urea in proportioning according to the certain ratio, mixing well-distributed,...After the sewage treatment, putting the wet sludge in which the heavy metal content is extremely low, corrupt and broken straw, bentonite, urea in proportioning according to the certain ratio, mixing well-distributed, taking the shape of Nitrogen slow-release fertilizers, doing the dynamic bioleaching test by the method of Artificial rainfall simulation, researching the slow-release characteristic, water retention. When the mass ratio of the wet sludge whose water content is 82.5%: bentonite: corrupt and broken straw: urea is 62.5: 12.5: 12.5: 12.5, drip washing the 10g Nitrogen slow-release fertilizers by the 80ml distilled water after 48h, the residue rate of urea is 29.63%; Under the room temperature of 25 ℃, 77%RH, moisture evaporate 46.32% after 60 h. The results demonstrate that the slow-release fertilizer has a good release-effect of nitrogen and water conservation effect. It provides the basic for the development and application of the sewage in the aspect of Nitrogen slow-release fertilizers.展开更多
The results of pot and pond trials are as follows.On equal amount of nitrogen(N)applied,the wheat nitrate reduction activity(NRA)and photosynthesis strength and other phy-siological properties are stronger and yields ...The results of pot and pond trials are as follows.On equal amount of nitrogen(N)applied,the wheat nitrate reduction activity(NRA)and photosynthesis strength and other phy-siological properties are stronger and yields are higher at normal soil moisture than those atdrought.At the same soil moisture,in a certain range of N applied,these properties of wheat in-crease with the increasing of N applied,but they descend when the amount of N applied exceedsa certain range.展开更多
To achieve the purpose of reducing farm non-point source pollution, we integrated site specific nitrogen management precise irrigation, controlled drainage, and wetland eco-repair system in dike area of Taihu basin. D...To achieve the purpose of reducing farm non-point source pollution, we integrated site specific nitrogen management precise irrigation, controlled drainage, and wetland eco-repair system in dike area of Taihu basin. During investigation, it had given prominence for the water and fertilizer coupling effects of precise irrigation and site specific nutrient management, the characteristics of integration on controlled irrigation, controlled drainage and wetland ecosystem non-point source pollution control. Then the water and fertilizer integrated management mode of paddy field was put forward in Taihu basin where the water production efficiency increased to 1.64 kg. m-3, water saved 37.8%, fertilizer use efficiency raised 15,4%, yield raised 10%, and N, P load decreased 26%-72%. The modern agricultural and farmland ecosystems that control and cut down the farm non-point source pollution came into being, which can be a reference by Taihu basin to control its agricultural non-point source pollution and eutrophicated water body.展开更多
The response of pungency of hot pepper fruits nitrogenous fertilizer on was invesigated. The results indicated that nitrogenous fertilizer had a significant effect on the capsaicin content of hot pepper fruits at 35 a...The response of pungency of hot pepper fruits nitrogenous fertilizer on was invesigated. The results indicated that nitrogenous fertilizer had a significant effect on the capsaicin content of hot pepper fruits at 35 and 42 days after flowering;, capsaicin content gradually decreased, while peroxidase activity increased with nitrogenous fertilizer increasing.展开更多
Background Achieving a synergistic enhancement in both the yield and insect resistance of Bt cotton holds substantial importance for boosting farmers'income and ecological advantages.This study investigated the im...Background Achieving a synergistic enhancement in both the yield and insect resistance of Bt cotton holds substantial importance for boosting farmers'income and ecological advantages.This study investigated the impact of amino acid foliar fertilizer(AAF)on the yield and Cry1Ac protein(CP)content,providing valuable insights for enhancing its productivity and insect-resistance capabilities.In 2021,Sikang 1 and Sikang 3 were treated with AAF once(A1)and water(CK)during the peak flowering stage.In 2022,AAF was sprayed one(A1),two(A2),and three(A3)times,respectively,with CK serving as the control.Results Compared with the control,the A3 treatment increased seed cotton yield(SCY)by 16.0%and CP by 40.98%at 30 days after flowering.AAF application enhanced soluble protein content(SP)and glutamate pyruvate transaminase(GPT)activity,while suppressing protease and peptidase activities.Concurrently,AAF improved sucrose metabolism through elevated sucrose content and increased activities of sucrose synthase(SS)and sucrose conversion enzyme(SCE),which were also positively correlated with yield.A lower ratio of carbon-to-nitrogen(C/N)was linked to higher yields and CP content.Path analysis confirmed that SP,GPT,SS,and SCE demonstrated positive effects on CP content and SCY,respectively.Peptidase activity had negative effects on CP and SCY.The C/N ratio had negative effects on SCY and CP,respectively.Conclusions Triple foliar application of AAF maintained lower C/N ratios with enhanced carbon metabolism and protein synthesis capacity,thereby simultaneously increasing both Cry1Ac protein content and yield in Bt cotton.These findings provide critical insights for improving both pest resistance and agronomic performance in Bt cotton cultivation.展开更多
氮肥减施是提升花生根瘤固氮能力与氮素利用效率的关键措施。花生品种间结瘤固氮特性迥异,本研究旨在探讨不同结瘤性状花生品种氮素吸收利用的差异。于山东省3个试验基点(望城、任城、茌平)开展为期2年的大田试验,设置120 kg hm^(–2)(N...氮肥减施是提升花生根瘤固氮能力与氮素利用效率的关键措施。花生品种间结瘤固氮特性迥异,本研究旨在探讨不同结瘤性状花生品种氮素吸收利用的差异。于山东省3个试验基点(望城、任城、茌平)开展为期2年的大田试验,设置120 kg hm^(–2)(N120)、60 kg hm^(–2)(N60)和0 kg hm^(–2)(N0) 3个梯度氮肥水平,比较了普通结瘤品种(CNV)与不结瘤品种(NNV)在氮素累积、氮素利用效率、产量及品质方面对氮肥用量的响应差异。结果表明,随氮肥投入递减,不结瘤品种的植株不同部位氮含量、氮素累积量、产量及籽仁蛋白质含量均呈下降趋势;与N120处理相比,N60处理的整株氮素累积量、产量和籽仁蛋白质含量分别平均降低18.98%、17.30%和10.69%, N0处理分别平均降低25.13%、13.97%和11.40%。相比之下,普通结瘤品种的上述指标在不同氮肥处理下基本保持稳定。Pearson相关分析显示,不结瘤品种各器官氮积累量与其产量、籽仁蛋白质含量间均存在显著正相关;而普通结瘤品种氮素累积量与此二者关联甚微。上述结果表明,相较于普通结瘤品种,不结瘤品种的产量、品质及氮素累积对氮肥的响应更为敏感。在花生生产中,应适度削减氮肥投入,充分发挥根瘤固氮潜能,来提升根瘤固氮效率。展开更多
文摘After the sewage treatment, putting the wet sludge in which the heavy metal content is extremely low, corrupt and broken straw, bentonite, urea in proportioning according to the certain ratio, mixing well-distributed, taking the shape of Nitrogen slow-release fertilizers, doing the dynamic bioleaching test by the method of Artificial rainfall simulation, researching the slow-release characteristic, water retention. When the mass ratio of the wet sludge whose water content is 82.5%: bentonite: corrupt and broken straw: urea is 62.5: 12.5: 12.5: 12.5, drip washing the 10g Nitrogen slow-release fertilizers by the 80ml distilled water after 48h, the residue rate of urea is 29.63%; Under the room temperature of 25 ℃, 77%RH, moisture evaporate 46.32% after 60 h. The results demonstrate that the slow-release fertilizer has a good release-effect of nitrogen and water conservation effect. It provides the basic for the development and application of the sewage in the aspect of Nitrogen slow-release fertilizers.
文摘The results of pot and pond trials are as follows.On equal amount of nitrogen(N)applied,the wheat nitrate reduction activity(NRA)and photosynthesis strength and other phy-siological properties are stronger and yields are higher at normal soil moisture than those atdrought.At the same soil moisture,in a certain range of N applied,these properties of wheat in-crease with the increasing of N applied,but they descend when the amount of N applied exceedsa certain range.
基金Supported by NSFC (50839002)Society Development Program of Jiangsu Province (BS2007139)
文摘To achieve the purpose of reducing farm non-point source pollution, we integrated site specific nitrogen management precise irrigation, controlled drainage, and wetland eco-repair system in dike area of Taihu basin. During investigation, it had given prominence for the water and fertilizer coupling effects of precise irrigation and site specific nutrient management, the characteristics of integration on controlled irrigation, controlled drainage and wetland ecosystem non-point source pollution control. Then the water and fertilizer integrated management mode of paddy field was put forward in Taihu basin where the water production efficiency increased to 1.64 kg. m-3, water saved 37.8%, fertilizer use efficiency raised 15,4%, yield raised 10%, and N, P load decreased 26%-72%. The modern agricultural and farmland ecosystems that control and cut down the farm non-point source pollution came into being, which can be a reference by Taihu basin to control its agricultural non-point source pollution and eutrophicated water body.
文摘The response of pungency of hot pepper fruits nitrogenous fertilizer on was invesigated. The results indicated that nitrogenous fertilizer had a significant effect on the capsaicin content of hot pepper fruits at 35 and 42 days after flowering;, capsaicin content gradually decreased, while peroxidase activity increased with nitrogenous fertilizer increasing.
基金projects 2024YFD2300605 supported by National Key Research and Development Program of ChinaProjects#32572459,and#31901462 supported by National Natural Science Foundation of China+2 种基金a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions,China(PAPD)a project funded by Natural Science Foundation of the Jiangsu Higher Education Institutions of China(22KJA210005)a project funded by College Student Innovation and Entrepreneurship Training Program。
文摘Background Achieving a synergistic enhancement in both the yield and insect resistance of Bt cotton holds substantial importance for boosting farmers'income and ecological advantages.This study investigated the impact of amino acid foliar fertilizer(AAF)on the yield and Cry1Ac protein(CP)content,providing valuable insights for enhancing its productivity and insect-resistance capabilities.In 2021,Sikang 1 and Sikang 3 were treated with AAF once(A1)and water(CK)during the peak flowering stage.In 2022,AAF was sprayed one(A1),two(A2),and three(A3)times,respectively,with CK serving as the control.Results Compared with the control,the A3 treatment increased seed cotton yield(SCY)by 16.0%and CP by 40.98%at 30 days after flowering.AAF application enhanced soluble protein content(SP)and glutamate pyruvate transaminase(GPT)activity,while suppressing protease and peptidase activities.Concurrently,AAF improved sucrose metabolism through elevated sucrose content and increased activities of sucrose synthase(SS)and sucrose conversion enzyme(SCE),which were also positively correlated with yield.A lower ratio of carbon-to-nitrogen(C/N)was linked to higher yields and CP content.Path analysis confirmed that SP,GPT,SS,and SCE demonstrated positive effects on CP content and SCY,respectively.Peptidase activity had negative effects on CP and SCY.The C/N ratio had negative effects on SCY and CP,respectively.Conclusions Triple foliar application of AAF maintained lower C/N ratios with enhanced carbon metabolism and protein synthesis capacity,thereby simultaneously increasing both Cry1Ac protein content and yield in Bt cotton.These findings provide critical insights for improving both pest resistance and agronomic performance in Bt cotton cultivation.
文摘氮肥减施是提升花生根瘤固氮能力与氮素利用效率的关键措施。花生品种间结瘤固氮特性迥异,本研究旨在探讨不同结瘤性状花生品种氮素吸收利用的差异。于山东省3个试验基点(望城、任城、茌平)开展为期2年的大田试验,设置120 kg hm^(–2)(N120)、60 kg hm^(–2)(N60)和0 kg hm^(–2)(N0) 3个梯度氮肥水平,比较了普通结瘤品种(CNV)与不结瘤品种(NNV)在氮素累积、氮素利用效率、产量及品质方面对氮肥用量的响应差异。结果表明,随氮肥投入递减,不结瘤品种的植株不同部位氮含量、氮素累积量、产量及籽仁蛋白质含量均呈下降趋势;与N120处理相比,N60处理的整株氮素累积量、产量和籽仁蛋白质含量分别平均降低18.98%、17.30%和10.69%, N0处理分别平均降低25.13%、13.97%和11.40%。相比之下,普通结瘤品种的上述指标在不同氮肥处理下基本保持稳定。Pearson相关分析显示,不结瘤品种各器官氮积累量与其产量、籽仁蛋白质含量间均存在显著正相关;而普通结瘤品种氮素累积量与此二者关联甚微。上述结果表明,相较于普通结瘤品种,不结瘤品种的产量、品质及氮素累积对氮肥的响应更为敏感。在花生生产中,应适度削减氮肥投入,充分发挥根瘤固氮潜能,来提升根瘤固氮效率。
