摘要
通过2年水稻化学氮肥减量施用田间试验及1年较大面积的推广示范研究,结果表明:崇明常年高氮水平下的水稻栽培区,降低氮肥用量可以通过土壤高、中、低碱解N含量水平,以维持现有水稻单产为原则,针对性地选取减氮途径进行减量,2年结果可比习惯施肥减氮15%～20%。
The results of the 2-year field experiments of reducing chemical N fertilizer application in rice growth and the 1-year demonstration and extension on a rather of large-area showed that appropriately selecting various ways of reducing chemical N fertilizer application according to different contents of alkali-hydrolysable N in soil could decrease the application amount by 15 % - 20 % and maintain the current rice yield per unit area.
出处
《上海交通大学学报（农业科学版）》
2006年第5期452-455,共4页
Journal of Shanghai Jiaotong University(Agricultural Science)
关键词
水稻
化学氮肥
减量施用
有效途径
rice
chemical N fertilizer
reducing application amount
effective ways
作者简介
姜琴（1956-），女，上海崇明人，大学本科，农艺师，主要从事农业科技教育工作；
施振云为本文通讯作者．
