江西农业大学学报2017，Vol.39Issue(5)：843-850,8.DOI:10.13836/j.jjau.2017109
氮硅配施对双季水稻产量及氮硅养分吸收利用的影响
Effect of Application of Nitrogen Combined with Silicon on Grain Yield of Double Cropping Rice and Its Nitrogen and Silicon Absorption
摘要
Abstract
Zhuliangyou819 and H you 518 were used as experimental materials, three levels of nitrogen (early rice with 0,105,165 kg/hm2 and later rice with 0,120,180 kg/hm2) and four levels of silicon(early and later rice with 0,120,180,240 kg/hm2 ) with equal application of phosphorus and potassium were de-signed to study the effects of application of nitrogen combined with silicon on grain yield and nitrogen and silicon absorption of rice in the double cropping paddy field. The results showed that combined application of nitrogen and silicon could increase the effective panicles per unit area,spikelet per panicle,filled grain per-centage,1000-grain weight and yield,the interaction effect was related with nitrogen fertilizer and silicon fertil-izer dosages.The treatment of N 165kg/hm2 and SiO2180 kg/hm2 and the treatment of N 180kg/hm2 and SiO2240 kg/hm2 could obtain the highest yield of early rice and late rice,respectively.It can be concluded that effi-cient silicon fertilizer application increases nitrogen and silicon accumulation and the uptake and use efficiency of double cropping rice.There was a significant positive correlation between the N accumulation and Si accumu-lation( r=0.998 and r=0.897 in early-and later-rice season,respectively);there was a significant positive cor-relation between the Si accumulation and rice grain yield( r=0.984 and r=0.998 in early-and later-rice sea-son,respectively) .关键词
氮肥/硅肥/水稻/产量/养分吸收Key words
nitrogen fertilizer/silicon fertilizer/rice/yield/nutrient utilization分类
农业科技引用本文复制引用
吴建富,谢凡,付桃秀,潘晓华,石庆华..氮硅配施对双季水稻产量及氮硅养分吸收利用的影响[J].江西农业大学学报,2017,39(5):843-850,8.基金项目
国家自然科学基金项目( 31660596,31460540)和国家"十二五"科技支撑计划项目( 2013BAD07B12) Project supported by the National Natural Science Foundation of China(31660596,31460540) and the National Key Technology Research and Development Program(2013BAD07B12) （ 31660596,31460540）
