安徽农业科学2012，Vol.40Issue(34)：16604-16606,3.
不同磷源及用量对冷浸田水稻磷素吸收利用的影响
Effects of Different Phosphorus Sources and Amount on Rice Yield and Phosphorus Use in Cold-waterlogged Paddy Filed
摘要
Abstract
[ Objective ] The effects of different phosphorus sources and amount on rice yield and phosphorus use in cold-waterlogged paddy field were studied, and the appropriate amount of phosphorus was explored. [Method] D You 202 was taken as materials. The field experiment of two kinds of phosphatic fertilizers and three levels was carried out. [ Result ] Under the condition of ditching in the cold-waterlogged paddy field, the effect of calcium magnesium phosphate on the yield was better than that of calcium superphoshate, and the yield was the highest when the concentration of P2O5 was 75 kg/hm . Phosphorus fertilizer could promote the formation of effective tillering of the paddy rice. But the excessive phosphorus fertilizer could cause the decrease of grain number per spike and 1 000-grain weight, and inhibit the increase of the yield. [ Conclusion ] Under the experimental condition, the optimum amount of phosphorus fertilizer was 75 kg per hectar, which could ensure the suitable phosphorus accumulation at each growth period,increase tiller number,grain number per spike,and the yield.关键词
冷浸田/磷肥/产量/磷素利用Key words
Cold-waterlogged paddy filed/ Phosphate fertilizer/ Yield/ Phosphorus utilization分类
农业科技引用本文复制引用
张祥明,郭熙盛,王文军,凌国宏,洪国胜..不同磷源及用量对冷浸田水稻磷素吸收利用的影响[J].安徽农业科学,2012,40(34):16604-16606,3.基金项目
公益性行业(农业)科研专项(201003059-07)项目. （农业）
