尿素深施对提高氮素利用率的影响  

Effect of Urea Deep Application on Utilization Efficiency of Nitrogen

作　　者：黄莺[1] 杨宏敏[1] 黎成厚[1] 何腾兵[1] 顾明[1] 魏成熙[1] 毛国军 王天书 

机构地区：[1]贵州农学院

出　　处：《贵州农业科学》1998年第3期30-32,共3页Guizhou Agricultural Sciences

基　　金：贵州省科委资助

摘　　要：为了研究氮肥深施在贵州省气候条件下对旱地氮素利用率的影响，采用不同深施方法在大方县、黔西县两地进行了两年的田间试验。研究结果表明：玉米氮肥深施比表施可提高氮素利用率６４％～２３９％，产量提高３２％～２１５％，施肥深度以近玉米根系１０ｃｍ土层效果最好。The field experiment of urea application method was carried out at Dafang and Qianxi for 2 years.The results indicated that buried urea could increase the utilization efficiency of nitrogen by 6.4%～23.9%,and increase the maize yield by 3.2% ～21.5%,compared with surface application.The best applying depth is of about 10 cm near the root system.

关 键 词：尿素 氮素利用率 深施肥 玉米 

分 类 号：S513.062[农业科学—作物学] S143.14