绿肥-水稻轮作体系中氮肥适宜用量研究  

Study on suitable nitrogen fertilizer dose under green manure crop-rice rotation system

作　　者：诸海焘[1] 余廷园[1] 田吉林[1] 

机构地区：[1]上海市农业科学院环境科学研究所上海市设施园艺技术重点实验室,上海201106

出　　处：《上海农业学报》2008年第4期60-64,共5页Acta Agriculturae Shanghai

基　　金：上海市科技兴农重点攻关项目[农科攻字(2002)第4-3-5号]资助

摘　　要：连续3年定位试验研究了绿肥-水稻轮作模式下,不同氮肥施用量的土壤肥力、水稻产量和肥料利用率效应。结果表明:绿肥连续还田提高了土壤的基础产量和最高产量,降低了最高产量施肥量。与冬季休闲模式相比,紫云英和蚕豆还田模式的最高产量分别提高10.27%和9.99%,而最高产量施肥量分别降低30.34%和29.65%。综合分析水稻产量、肥料效应、氮素利用率及经济效益等因素,冬季休闲-水稻,冬季紫云英-水稻和冬季蚕豆-水稻3种种植模式的水稻氮肥适宜用量分别为16、12kg/667m2和12kg/667m2。A 3-year location test for green termine the effects of N fertilizer dose on soil manure crop-rice rotation system was conducted to defertility, rice yield and nitrogen use efficiency. The resuits showed that successively returning winter green manure crop to farmland increased soil fertility and rice yield and reduced nitrogen fertilizer demand to gain a high rice yield. Compared with winter fallow-rice rotation system, the rotation system of Astragalus sinicus （or Vicia faba）-rice increased by 10.27% （or 9.99%） in rice yield, but decreased by 30.34% （or 29.65%） in N fertilizer dose. Considering such factors as rice yield, nitrogen fertilizer use efficiency and economic benefit, the suitable nitro- gen fertilizer doses for winter fallow-rice, winter Astragalus sinicus-rice and winter Vicia faba-rice ro- tation systems were 16 kg/667 m^2, 12 kg/667 m^2 and 12 kg/667 m^2 ,respectively.

关 键 词：绿肥 水稻 轮作 氮肥用量 

分 类 号：S511.06[农业科学—作物学]