摘要
采用总结高产经验与试验研究相结合的方法揭示了中国91水稻品种亩产700kg以上的生育特点、产量结构及生理指标,指出超高产栽培的主攻方向是在保证最适穗数的前提下提高结实率,适宜谷草比的基础上尽量增加干物重。其主要措施是适当早育秧、早插秧、增加底氮肥和总氮用量,后期适当增加磷、钾肥和降低氮肥用量。
The growth-development characteristics, yield composition and physiological tagets of Zhonggue Jiouyi with yield high above 700kg / mu were studied. It suggested that supper high-yield cultivation should take enhancing percentage of filled grains while ensuring an optimal number of panicles, increasing as much as possible dry matter weight while maitain a appropriate grain-straw ratio as the main taget. The main method include appropriate early sowing, transplanting, increasing base and total nitrogen application amount, and appropriatly increasing phosphorus. potassium and decreasing nitrogen fertilizer application amount in the late growth period.
出处
《莱阳农学院学报》
1993年第4期253-256,共4页
Journal of Laiyang Agricultural College
关键词
生育特性
生理指标
水稻
中国91
growth-development characteristics
supper high-yield cultivation
physiologieat tagets
filled grain ratio
rich
