武汉市郊早稻氮磷钾肥效及推荐用量研究  

Effects of NPK Fertilizers and Recommendation of Optimal Fertilizer Rates for Early-season Rice in Wuhan Suburb

作　　者：朱德雄 卜容燕[2] 李培根 刘学军 王瑾[2] 刘威[2] 李小坤[2] 

机构地区：[1]湖北省武汉市黄陂区土壤肥料工作站,湖北武汉430300 [2]华中农业大学资源与环境学院

出　　处：《现代农业科技》2010年第4期58-60,共3页Modern Agricultural Science and Technology

基　　金：国家"十一五"科技支撑计划重点项目(2008BADA4B08);国家测土配方施肥项目

摘　　要：在湖北省武汉市黄陂区利用"3414"试验设计了早稻氮、磷、钾肥料效应研究,结果表明:施肥具有显著的增产作用,增产幅度为8.0%～42.6%,增产量最大的是N2P2K3处理。氮肥具有显著的增产增收效果,最高增产量达1326kg/hm2,增加纯收益达1325.5元/hm2,其次是钾肥和磷肥。通过拟合一元二次肥效模型,结合试验实际情况,确定早稻N、P2O5和K2O的最高产量施用量分别为195、80、220kg/hm2,最佳施肥量分别为153、61、55kg/hm2。In this paper,the effect test of nitrogen,phosphorus and potassium fertilization on early-season rice was studied by ＂3414＂ fertilizer experiment,which was carried out in Huangpi region of Wuhan city in Hubei province.The result indicated that the fertilization increased early-season rice yield by 8.0%～42.6% and the treatment which had the hightest of yield gain was N2P2K3.The yield of early-season rice increased significantly by 1656kg/hm2,and net income 1326 yuan/hm2 with nitrogen fertilization,and hosphorus and potassium the second.According to fitting fertilizer response equation and the effects of fertilizer application,the recommendation rate of N,P2O5 and K2O getting the highest yield was 195kg/hm2,80kg/hm2,220 kg/hm2,and the recommendation rate of N,P2O5 and K2O getting the highest profit was 153kg/hm2,61kg/hm2,55kg/hm2,respectively.

关 键 词：早稻 “3414”试验 经济效益 推荐施肥量 湖北武汉 

分 类 号：S511.31[农业科学—作物学]