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
廖炳钧 1钟乐辉 1曾立龙 1徐宏亮 1杨亮 1刘立人 2聂军3
作者信息
- 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;农业部湖南耕地保育科学观测实验站,湖南 长沙 410125
- 折叠
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(K2O)4.76～6.44 kg/667m2 可以达到最佳的产量和经济效益.
Abstract
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(K2O)was recommended at 71.4-96.6 kg/hm2 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Key words
rice/different potassium application rates/yield/fertilizer utilization rate引用本文复制引用
基金项目
湖南省农业科技创新资金项目(2023CX45)
湖南省农业科技创新资金项目(2023CX47)
出版年
2024
国家科技期刊平台
NSTL
万方数据