钾肥不同施入量对水稻产量及钾肥利用率的影响  

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

作　　者：潘月卓[1] 付立东[1] 柳立 顾洪义 

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010 [2]大洼县西安镇农林综合服务站,辽宁盘锦124200

出　　处：《北方水稻》2012年第5期18-21,共4页North Rice

基　　金：农业部超级稻新品种选育与示范项目;农财发【2009】1号资助;辽宁省科技攻关项目(2009201003)

摘　　要：以超级稻"盐丰47"为材料,采用小区对比试验方法,探讨了钾肥不同施量对水稻生育性状、产量及钾肥利用率的影响。结果表明,施入钾肥(K2O)4.5 kg/667 m2的处理K1.5获得单产613.6 kg/667 m2,比K2、K3、K1、K4、K0处理分别增产了0.1%、0.8%、1.1%、2.6%、2.7%;其单位面积有效穗数、颖花数以及干物质产量、齐穗后干物质积累量占籽粒产量的百分比、钾肥利用率均较高。试验条件下的适宜施钾量(K2O)为3.0～4.5 kg/667 m2。The effect of different dosage of potash fertilizer on rice yield, growth characters and ratio of potash fertilizer utilization were researched by plot comparative test which using Yanfeng47 as experiment material. The result indicated that the treatment 1.5 which use potash fertilizer （4.5 kg/667 m2） can achieve the yield of 613.6 kg/667 m2, the yield increase 0.1%, 0.8% ,1.1% ,2.6% ,2.7% than treatment K2,K3,K1 ,K4,K0, the treatmentl.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. The best dosage of potash fertilizer was 3.0-4.5 kg/667 m2 under the condition of this test.

关 键 词：水稻 钾肥 叶面积指数 干物质产量 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] S143.3