摘要
为探索水稻无盘免耕抛秧高产栽培综合农艺措施,采用四元二次回归正交旋转组合设计,以种植密度(X1)、施氮量(X2)、施磷量(X3)、施钾量(X4)为参试因子,优化出在免耕无盘抛秧栽培条件下稻谷产量在11 100 kg/hm^2以上的农艺措施方案:种植密度17.46万~18.54万株/hm^2,施氮肥(纯N)175.350~184.651 kg/hm^2、磷肥(P2O5)132.15~143.85 kg/hm^2、钾肥(K2O)156.0~175.2 kg/hm^2。
Using quaternary quadratic regression orthogonal rotational combination design, a diskless and no-tillage cultivation of comprehensive agronomic measures for Hoe throwing-seedling was explored with planting density （XI）, nitrogen （X2）, phosphorus fertilizer （X3）, potassium fertilizer （X4） as participant factors. The results showed that agronomy measures of grain yield gained above 111 000 kg/hm2 were density 174 600-185 400 plants per hectare,pure N 175.350-184.651 kg/hm2,P2O5 132.15-143.85 kg/hm2,K20 156.0-175.2 kg/hm2.
出处
《现代农业科技》
2017年第24期19-20,24,共3页
Modern Agricultural Science and Technology
关键词
杂交水稻
免耕
抛秧
技术优化
hybridrice
no-tillage
throwing-seedling
technologyoptimization
