摘要
黑土农田化肥氮素去向的研究王建国韩晓增刘鸿翔(中国科学院黑龙江农业现代化研究所,哈尔滨150040)StudyontheFateofNitrogenousFertilizerintheBlackSoil.WangJianguo,HanXiaozeng...
By means of 15 N experiments,the fate of nitrogenous fertilizer of maize and soybean and wheat in the farmland was studied. The results showed that in the black soil farmland of Songnen Plain,wheat's N fertilizer use efficiency was 33%-40% with average of 37%,the soil residual 12%-16% with average of 14% and the gaseous loss 47%-50%, with average of 48.6%. Maize's N fertilizer use efficiency,the soil residual and gaseous loss was 37%,14% and 49% respectively. Sweet clover's N fertilizer use efficiency,soil residual and gaseous loss was 9%,30% and about 60% respectively. And soybean's N fertilizer use efficiency was 33%-40% with average of 37%,the soil residual 25%-50% with average of 31% and the gaseous loss 15%-35% with average of 27%.
出处
《生态学杂志》
CAS
CSCD
北大核心
1997年第5期61-63,共3页
Chinese Journal of Ecology
基金
中国科学院"八五"重大基础性研究资助
关键词
农业生态学
黑土
农田
化肥氮
作物
利用率
N fertilizer use efficiency,black soil,maize,wheat,soybean.