不同钾肥用量对水稻产量及肥料利用率的影响  

Effects of Different Potassium Application Rates on the Yield and Fertilizer Utilization Rate of Rice

作　　者：廖炳钧 钟乐辉 曾立龙 徐宏亮 杨亮 刘立人 聂军[3,4] LIAO Bing-jun;ZHONG Le-hui;ZENG Li-long;XU Hong-liang;YANG Liang;LIU Li-ren;NIE Jun(Yuanjiang Bureau of Agriculture and Rural Affairs,Yiyang 413100,PRC;Comprehensive Agricultural Service Center of Caowei Town,Yuanjiang City,Yuanjiang 413108,PRC;Hunan Soil and Fertilizer Institute,Changsha 410125,PRC;Scientific Observation and Experiment Station of Arable Land Conservation(Hunan),Ministry of Agriculture,Changsha 410125,PRC)

机构地区：[1]沅江市农业农村局,湖南益阳413100 [2]沅江市草尾镇农业综合服务中心,湖南沅江413108 [3]湖南省土壤肥料研究所,湖南长沙410125 [4]农业部湖南耕地保育科学观测实验站,湖南长沙410125

出　　处：《湖南农业科学》2024年第6期44-47,共4页Hunan Agricultural Sciences

基　　金：湖南省农业科技创新资金项目(2023CX45;2023CX47)。

摘　　要：为探究适宜水稻生产的钾肥使用量,以“济优6553”为为供试材料,研究不同钾肥施用量对水稻产量及肥料利用率的影响。结果表明:在氮肥和磷肥等量施用条件下,水稻籽粒产量和稻草产量随着钾肥施用量的增加逐渐增加,但增幅逐渐变小。钾肥用量85%和115%处理的经济效益相近。在水稻生产上,推荐钾肥用量(K_(2)O)4.76~6.44 kg/667m^(2)可以达到最佳的产量和经济效益。The effects of different potassium application rates on the yield and fertilizer utilization rate of the rice cultivar'Jiyou 6553'were studied.The results showed that in the case of equal application of nitrogen and phosphorus fertilizers,the grain yield and straw yield of rice increased gradually with the increase in the potassium application rate,while the increasing rate declined.The economic benefits in the cases of potassium application at 85%and 115%were similar.Therefore,the application of potassium fertilizer(K_(2)O) was recommended at 71.4-96.6 kg/hm for achieving the highest yield and economic benefit in rice production.

关 键 词：水稻 不同钾肥用量 产量 肥料利用率 

分 类 号：S511[农业科学—作物学]