江西农业大学学报Issue(6)：955-959,5.DOI:10.13836/j.jjau.2015145
不同硅肥用量对双季水稻产量和氮素吸收利用的影响
Effects of Silicon Levels on Rice Grain Yield and Its Nitrogen Absorption
摘要
Abstract
Pot experiments were conducted to investigate the influence of Si fertilizer on yield and N⁃up⁃take and use efficiency of double cropping rice under the conditions of equal nitrogen,phosphorus and potassi⁃um nutrients.The results showed that along with the increase of Si fertilizer application,the yield of early⁃and late⁃rice increased firstly and then decreased within the range of SiO2 application rate of 0~0.8 g/kg soil.There was a significant parabolic correlation between the amounts of Si fertilizer application and rice grain yield ( r=0.931 2 and r=0.973 3 in early⁃and late⁃rice season,respectively).It can be concluded that efficient Si fertil⁃izer application enchances N contents in different plant components of early rice at the mature stages with in⁃creased nitrogen uptake of double cropping rice and nitrogen harvest index of late rice.关键词
硅肥/双季稻/产量/氮素吸收Key words
Silicon fertilizer/yield/N utilization分类
农业科技引用本文复制引用
吴建富,姚仲生,谢凡,付桃秀,石庆华,潘晓华..不同硅肥用量对双季水稻产量和氮素吸收利用的影响[J].江西农业大学学报,2015,(6):955-959,5.基金项目
国家“十二五”科技支撑计划项目 （）
