钾肥对水稻产量及钾肥利用率的影响  

Effect of Potash Fertilizer on Rice Yield and Ratio of Potash Fertilizer Utilization

作　　者：索巍巍[1] 付立东[1] 王宇[1] 李旭[1] 隋鑫[1] 任海[1] 

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010

出　　处：《北方水稻》2014年第2期18-21,25,共5页North Rice

基　　金：环渤海辽宁增粮技术集成与示范/2013BAD05B 07;耐盐高产优质水稻高效栽培技术示范推广/GCNT-LN-16-2;水稻标准化技术研究与示范/2013215003

摘　　要：以超级稻“盐丰47”为材料，采用小区对比试验方法，探讨了钾肥（K20）不同施量K0、K1、K1．5、K2、K3、K4（0．0、3．0、4．5、6．0、9．0、12．0kg／667m^2）对水稻产量及钾肥利用率的影响。结果表明，K1．5处理获得单产584．3kg／667m^2。，比K2、K1、K3、K0、K4处理分别增产了1．2％、1．5％、2．6％、3．6％、4.4％。其单位面积有效穗数与颖花数、干物质积累量与齐穗后干物质积累量占籽粒产量的百分比及高效叶面积率、钾肥利用率与钾肥生产力均较高。该稻区中等偏下土壤肥力条件下，获得单产600-650kg／667m^2的钾肥（K20）适宜施入量3．0-6．0kg／667m^2。The effect of different dosage of potash fertilizer （K0 were 0.0 kg/667 m^2, K1 were 3.0 kg/667 m^2, K1.5 were 4.5 kg/ 667 m^2, K2 were 6.0 kg/667 m^2, K3 were 9.0 kg/667 m^2, K4 were 12,0 kg/667 m^2） on rice yield and ratio of potash fertilizer utilization were researched by plot comparative test which using Yanfeng47 as experiment material. The result indicated that K1.5（4.5 kg/667 m^2） can achieve the yield of 584.3 kg/667 m^2, the yield increase 1.2%, 1.5%, 2.6%,3.6%,4.4% than treatment K2,K3 ,K1 ,K4,K0, the treatment-5 had higher effective panicles per unit area, flowers, yield of dry matter, the rate that dry matter accumulation in the grains yield after heading and potash fertilizer utilization efficiency. In the conditions of soil fertility of lower middle level it can achieve 600-650 kg/667 m^2 which the potash fertilizer（KzO） were 3.0-6.0 kg/667 m^2.

关 键 词：水稻 钾肥 叶面积指数 干物质积累量 钾肥利用率 百千克籽粒需钾量 产量 

分 类 号：S511.062[农业科学—作物学]