安徽农业科学2025，Vol.53Issue(13)：16-19,4.DOI:10.3969/j.issn.0517-6611.2024.13.004
播期与密度互作对直播棉产量及农艺性状的影响
Effects of Interaction Between Sowing Date and Density on Yield and Agronomic Characters of Direct-seeded Cotton
摘要
Abstract
The aim was to clarify the optimum density of middle-early maturing varieties in different sowing dates under direct seeding condi-tions,so as to provide technical support for light and simple cultivation of cotton after rape(wheat).With Ganzamian 0906 as the test material,the effects of different sowing dates and density treatments on cotton agronomic characters and yield were researched in 2021-2023.The results showed that delaying sowing date would shorten the growth period.In different combinations of sowing date and density,when sowing on May 15th and the density of 67 500-97 500 plants/hm2,the number of bolls per unit area was relatively high.The interaction between sowing date and density had no significant effect on boll weight and lint percentage;the effect of sowing date on cotton fiber quality was uncertain because of the different climate in each year.In the sowing date range of this experiment,Ganzamian 0906 obtained high yield as long as it was matched with suitable density.Sowing in late April and early May,the density should not exceed 67 500 plants/hm2.Sowing in mid-May,the optimum density was 67 500-97 500 plants/hm2.Sowing in late May,the harvesting density should be at least 82 500 plants/hm2.关键词
播期/密度/棉花/产量/农艺性状Key words
Sowing date/Density/Cotton/Yield/Agronomic character分类
农业科技引用本文复制引用
张丽娟,陈俊英,秦宇坤,王玉萍..播期与密度互作对直播棉产量及农艺性状的影响[J].安徽农业科学,2025,53(13):16-19,4.基金项目
江西省重点研发计划项目(20192BBFL60005). （20192BBFL60005）
