生殖生长不同时期施肥对水稻产量及构成因素的影响  

Effects of Applying Fertilization in Different Generative Growth Phases on Yield and Yield Components of Rice

作　　者：姜莎莎 李超 傅建 王星罡 

机构地区：[1]贵州省六盘水市六枝特区农业技术推广站,贵州六枝553400

出　　处：《耕作与栽培》2016年第1期15-17,共3页Tillage and Cultivation

摘　　要：试验以宜香481为材料,在当地常规施肥的基础上,研究不同时期等量追施穗肥对其产量的影响及灌浆期干物质和氮、磷、钾元素的积累情况,探讨最佳施用穗肥的生长时期。研究结果表明:在第二次枝梗及颖花原基分化期(穗分化3期)与花粉母细胞成熟期(穗分化5期)下分别施用一半穗肥,单产最高。To explore the best spike fertilizing time on rice,taking Yixiang 481 as material,effects of spike fertilizer rates on yield,dry matter of filling stage and the accumulation of nitrogen,phosphorus and potassium was studied based on local conventional fertili zing.The results showed that under application fertilizer in the second branch and spikelet primordium differentiation stage and pollen mother cell maturation stage,yield of which is the greatest,it is the optimal in every aspects of yield components.

关 键 词：水稻 生殖生长期 穗肥 产量构成因素 产量 

分 类 号：S511[农业科学—作物学]