摘要
油后棉采用中熟品种育苗移栽,早发稳长,生育协调,植株生理活性高。有效结铃期长,单株成铃23.3个,最佳结铃期内成铃比例占70.6～78.0％,亩产皮棉99.2kg,亩产值515.3元,比其它处理高20.0～47.9％,综合效益最高。早熟品种直播,棉花晚种早发,生育进程快,营养生长期仅24～25d,成铃期与最佳结铃期基本吻合,亩产皮棉79.8kg,亩产值411.7元,由于用工投资少,劳动生产率较高,综合效益次之。采用早熟品种育苗移栽和中熟品种直播的种植方式,其产量和经济效益较低。
Medium-matured varieties of cotton with the method of transplanting, the vegetative growth is vigorous, the physiological activity of plant high and the number of boll setting per plant is the most with a higher proportion in the best boll setting period. The lint cotton yield is 99.2 kg per mu, 20.0～47.9 per cent higher than any of the other treatments, possessing the hi' ghest comprehensive efficiency. Early-matured varieties with direct planting develop earlier, the vegetative growth period only lasts 24～25 days. The proportion of boll setting in the best boll setting period is high. The lint cotton yield is 79.8kg per mu. Because less labor force is needed. it has an adventage of high labor-producing efficiency, the comprehensive efficieney ranges the second.
出处
《河南农业大学学报》
CAS
CSCD
1990年第2期252-260,共9页
Journal of Henan Agricultural University
关键词
棉花
油后棉
生长
产量
种植方式
cotton after rape
transplanting
direct planting
variance analysis
model
best boll setting period
efficiency
