应用固-液反应包膜工艺,采用4种改性的无机包膜材料,试制出了成本较低的包膜缓释尿素,用水中溶出率法测定了包膜缓释尿素的养分释放特征,应用盆栽水稻评价了包膜缓释尿素的肥效,并与国外的有机缓释氮肥(M ethy lene U rea)和高聚物包膜...应用固-液反应包膜工艺,采用4种改性的无机包膜材料,试制出了成本较低的包膜缓释尿素,用水中溶出率法测定了包膜缓释尿素的养分释放特征,应用盆栽水稻评价了包膜缓释尿素的肥效,并与国外的有机缓释氮肥(M ethy lene U rea)和高聚物包膜复合肥(O sm ocotte)进行了比较,表明固-液反应型包膜尿素具有较好的养分缓释效果,4种包膜尿素与等氮和等重常规尿素相比,栽培水稻都有一定的增产作用,并提高了肥料利用率,其中LU增产最显著,比等氮和等重尿素处理分别增产41.5%和35.7%,肥料当季利用率达到43.9%,好于国外的有机缓释氮肥和高聚物包膜复合肥,养分释放特征与水稻氮素营养特征较为接近,可为水稻一次性施肥所用。展开更多
The sensitivity of laboratory reared Anastatus japonicus adults to field concentrations of ten bio-insecticides was evaluated by toxic paper method. The results indicated that NPV, B. t aizawai, B. t qiansheng, B. t c...The sensitivity of laboratory reared Anastatus japonicus adults to field concentrations of ten bio-insecticides was evaluated by toxic paper method. The results indicated that NPV, B. t aizawai, B. t qiansheng, B. t chongwen and plant derived insecticides, such as neem oil and, cineol, were harmless to A. joponicus.; B. t and rotenone had sonic toxicity., but were comparatively safe while trichlorfon was highly toxic to A japonicus. In order to reduce the harmful effects of insecticides to A japonicus, the use of some highly toxic insecticides must stop and some reasonably low-toxi insecticides, especially biological insecticides can be used when parasites are released to control insect pests.展开更多
基金National Basic Research Program of China (973 Program) (2009CB19203)Special Public Sector Research Project (200803005)China National Natural Science Foundation (30871678)
文摘应用固-液反应包膜工艺,采用4种改性的无机包膜材料,试制出了成本较低的包膜缓释尿素,用水中溶出率法测定了包膜缓释尿素的养分释放特征,应用盆栽水稻评价了包膜缓释尿素的肥效,并与国外的有机缓释氮肥(M ethy lene U rea)和高聚物包膜复合肥(O sm ocotte)进行了比较,表明固-液反应型包膜尿素具有较好的养分缓释效果,4种包膜尿素与等氮和等重常规尿素相比,栽培水稻都有一定的增产作用,并提高了肥料利用率,其中LU增产最显著,比等氮和等重尿素处理分别增产41.5%和35.7%,肥料当季利用率达到43.9%,好于国外的有机缓释氮肥和高聚物包膜复合肥,养分释放特征与水稻氮素营养特征较为接近,可为水稻一次性施肥所用。
文摘The sensitivity of laboratory reared Anastatus japonicus adults to field concentrations of ten bio-insecticides was evaluated by toxic paper method. The results indicated that NPV, B. t aizawai, B. t qiansheng, B. t chongwen and plant derived insecticides, such as neem oil and, cineol, were harmless to A. joponicus.; B. t and rotenone had sonic toxicity., but were comparatively safe while trichlorfon was highly toxic to A japonicus. In order to reduce the harmful effects of insecticides to A japonicus, the use of some highly toxic insecticides must stop and some reasonably low-toxi insecticides, especially biological insecticides can be used when parasites are released to control insect pests.
