水土保持学报2011，Vol.25Issue(3)：87-91,5.
有机无机肥配施对杭嘉湖地区稻田氮素利用率及环境效应的影响
Effect of Combined Application of Organic Manure and Chemical Fertilizers on N Use Efficiency in Paddy Fields and the Environmental Effects in Hang Jiahu Area
摘要
Abstract
The effect of combined application of organic manure and chemical fertilizers on N use efficiency (NUE) in paddy fields and the environmental effects in Hang jiahu area were studied by field experiments and 15N isotopic tracer. The results showed that combined use of 150 kg/hm2 nitrogen and 3 000 kg/hm2 organic manure improved the yield of rice by 9.8％～17.7％. The N use efficiency was 47.9％, and 4.8％ higher than that of chemical fertilizers only. While combination of 210 kg/hm2 nitrogen and 3 000 kg/hm2 organic manure decreased the rice yield and NUE. Nitrate was the main type of nitrogen loss in paddy field.The applying of organic manure could effectively reduce the loss of nitrogen. On the condition of N application at the rate of 150 kg/hm2 nitrogen, addition of 3 000 kg/hm2 organic manure reduced the rate of nitrogen loss from 0.85％ to 0.70％ through runoff, and from 1.29％ to 0.96％ through leaching. When the nitrogen application was increased to 210 kg/hm2, addition of organic manure had no remarkable effects on reduceing the nitrogen loss. Based on the soil properties tested, the target rice yield to be obtained and the potential environmental impact, a combination of 3 000 kg/hm2 organic manure with 150 kg/hm2 nitrogen for the Hangjiahu area was recommended.关键词
有机肥/化肥/氮素损失/杭嘉湖Key words
organic manure/ chemical fertilizer/ nitrogen loss/ Hangjiahu area分类
农业科技引用本文复制引用
叶静,俞巧钢,杨梢娜,姜丽娜,马军伟,王强,汪建妹,孙万春,符建荣..有机无机肥配施对杭嘉湖地区稻田氮素利用率及环境效应的影响[J].水土保持学报,2011,25(3):87-91,5.基金项目
浙江省重大项目(2009C12001) （2009C12001）
国家自然科学基金项目(31000941) （31000941）
公益性行业(农业)科研专项(201003014) （农业）
公益性行业(农业)科研专项(201003059) （农业）
