冲积土水稻钾肥适宜用量的研究  

Studies on the Optimum Potash Fertilizer Rate for Super-rice on the Alluvial Soil

作　　者：侯云鹏[1] 尹彩侠[1] 秦裕波[1] 张国辉[1] 张宽[1] 王秀芳[1] 张路[2] 谢佳贵[1] 

机构地区：[1]吉林省农业科学院农业环境与资源研究中心,长春130033 [2]长春市农业科学院,长春130111

出　　处：《吉林农业科学》2009年第5期25-27,共3页Journal of　Jilin Agricultural Sciences

基　　金：中加合作项目(IPNI)平衡施肥示范计划

摘　　要：田间试验研究结果表明:在吉林省冲积土上,施用钾肥对水稻有明显的增产效果。施用K2O 65kg/hm2,相对增产值为7.34%,化肥利用率达53.6%,千粒重和穗粒数最高,为最佳用量。Results of field experiment showed that on the alluvial soils of Jilin Province,potash fertilizer applications could have a obvious yield-increasing effect on rice,and the optimum potash fertilizer rate was K2O75 kg/ha,whose relative yield-increasing value was 7.34%,and the fertilizer utilization rate reached 53.6%,1 000-grains weights and grain number per spike was the highest.

关 键 词：钾肥 用量 水稻产量 

分 类 号：S511.062[农业科学—作物学]