江汉平原腹地中稻氮磷钾肥效及其适宜用量  

Fertilizer Efficiency and Optimum Recommendation of NPK Fertilizer for Mid-season Rice in the Hinterland of Jianghan Plain

作　　者：刘新伟[1] 龚德平 娄希凤[1] 韩玲君[1] 杨德桦[1] 赵竹青[1] 

机构地区：[1]华中农业大学资源与环境学院,湖北武汉430070 [2]湖北省江北农场土壤肥料工作站,湖北荆州420291

出　　处：《福建农业学报》2012年第1期18-23,共6页Fujian Journal of Agricultural Sciences

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(2009)

摘　　要：通过在江汉平原腹地江北农场5个分场布置中稻的"3414"肥料效应试验,研究了氮、磷、钾肥对中稻产量和经济效应的影响。结果表明,施肥对中稻的增产效果明显,中稻施用氮肥的效果最好,磷肥次之,钾肥最小。稻谷最高增产695.1～2 414.7kg.hm-2,相应增产率为8.6%～37.8%,纯增收1 011.2～3 563.5元.hm-2。通过配置三元二次和一元二次肥效模型,结合田间试验实际情况,确定中稻的最佳施肥量为纯N180～200kg.hm-2,P2O555～60kg.hm-2,K2O 50～60kg.hm-2。A ＂3414＂ fertilizer experiment was carried out in Jiangbei farm of five fields to determine the yield and economic effect of nitrogen, phosphorus and potassium fertilization on mid-season rice. The result showed that the effect of fertilization on mid-season rice yield increase is obvious： the effect of N fertilization on mid-season rice yield and economic benefit was largest, the next was P, and K fertilization was the smallest. The highest in yield of N, P and K were 695.1-2 414.7 kg .hm^-2, and which were 8.6%--37.8% higher than control. The net income of N, P and K were 1 011.2--3 563.5 Yuan .hm^-2, respectively. According to fertilizer effect, N, P205 and K20 application rate to get the highest profit were 180--200 kg .hm^-2, P20s 55--60 kg .hm^-2, and K20 50--60 kg .hm^-2, respectively.

关 键 词：江汉平原 江北农场 中稻 “3414”肥料效应方程 推荐施肥量 

分 类 号：S147[农业科学—肥料学]