华北农学报2011，Vol.26Issue(2)：175-179,5.
变性淀粉包裹型缓释尿素对冬小麦生长发育及氮素农学效率的影响
Effects of Modified Starch Coated and Slow Released Urea on Growth and Nitrogen Agronomic Efficiency Winter Wheat
摘要
Abstract
The field plot experiment was conducted and it were discussed about the effects of modified starch coated and slow release urea on winter wheat growth ,photosynthetic rate and water efficiency in flag leaf,yield and nitrogen agronomic efficiency. The results indicated that the wheat dry matter increased when coated and slow release urea as base fertilzer compared with urea. The root vigor activity increased 4.90％ to 16.66％ ,photosynthetic rate and water efficiency in flag leaf increased 4.41％ to 9.41％ and 8.63％ to 25.17％ respectively. After harvest,the soil nitrate content with coated and slow release urea applied was higher than urea used in the surface depth, but lower in the deep soil. the the wheat yield increased 9.4％ in the coated and slow released urea treatment. So the characteristics of nitrogen releasing were main factor,which affected the soil nitrogen content. With fertilizer amount increased,groundwater contaminated would increase.关键词
冬小麦/变性淀粉/包裹型缓释尿素/生长发育/产量/土壤硝态氮Key words
Winter wheat/ Modified starch/ Coated and slow released urea/ Growth/ Yield/ Soil nitrate分类
农业科技引用本文复制引用
翟彩霞,吴欢欢,王丽英,陈丽莉,李若楠,窦菲,张彦才,李在涵..变性淀粉包裹型缓释尿素对冬小麦生长发育及氮素农学效率的影响[J].华北农学报,2011,26(2):175-179,5.基金项目
国家科技支撑计划(2007BAD69B05 （）
2007BAD870B04) （）
