摘要
[目的]为中棉所50麦后直播及高产高效种植提供配套栽培技术。[方法]设密度和缩节胺用量2个因子,共6个处理组合,重复3次,初花期每公顷追施磷酸二氨225 kg,后期叶面喷施10%尿素液和1%硫酸二氢钾补充施肥。[结果]试验表明,中等以上肥力麦田,麦收后及时整地,施足基肥,直播短季棉中棉所50,留苗密度12万-15万株/hm2,采取叶龄模式全程化控,DPC用量143.5 g/hm2,每公顷皮棉产量超过1500 kg,霜前花率92.3%。[结论]早期化调有利于促进花芽分化,降低果枝节位。
[ Objective ] The research aimed to provide the corresponding cultivation techniques for the high yield and high efficiency planting of short season cotton direct-seeded after wheat harvest. [ Method] Density and PIX dosage was setted for two factors and six treatments combined then in the experiment .During initial bloom stage,the fertilization amount was phosphoric acid 225 kg/hm^2,and during late growth stage, the fertilization amount was the liquid of urea 10% ,potassium dihydrogen sulfate 1%. [Results] In the experiment, short season cotton Zhongmiansuo 50 was direct-seeded on the high fertilized wheat field with planting density 120 000- 150 000 plants/hm^2, DPC dosage 143.5 g/hm^2 .Chemical control of leaf age model was carried out throughout the growth of Zhongmiansuo 50, And the lint cotton yield was over 1 500 kg/hm^2, pre-frost flowering rate was 92.3 %. [ Conclusion] Early chemical regulation was beneficial to floral bud differentiation and fruit branch node reduce.
出处
《安徽农业科学》
CAS
北大核心
2008年第16期6729-6730,共2页
Journal of Anhui Agricultural Sciences
基金
河南省教育厅项目资助
关键词
短季棉
密度
叶龄模式化控
Short season cotton
Density
Chemical control of leaf age model
