摘要
通过对不同密度下湘杂棉8号棉叶生长发育的比较与分析,结果表明:在同一时期单株叶面积随着密度的增大而减小,LAI随着密度的增大而增大;不同群体叶面积指数随生育期变化符合Logistic修正模型:y=b0/[1+exp(b1+b2x+b3x2)]。不同密度下叶片的干物质积累及其日增量随着时间的推移差异逐渐明显并呈现一定的规律性,即随着密度的增大而逐渐减小。
Through comparison and analysis of the XiangzamianNo. 8 cotton leaf growth and development under different density, the results showed that： leaf area per plant decreased with the increased density in the same period, LAI increased as the increased density ; leaf area indexs of different groups were in line with the growth period Logistic correction model： y = b0/ [ 1 ＋ exp （b1 ＋ b2x ＋ bax2 ）] differences of leaves dry material accumulation and increment per day under different density became clear and showed a certain degree of regularity, that is, with the increasing with the decreased density.
出处
《江西棉花》
2010年第2期19-22,共4页
Jiangxi Cottons
基金
国家公益性行业科研专项-棉花简化种植节本增效生产技术研究与应用(3-5-14)
关键词
密度
湘杂棉8号
棉叶
生长发育
density
Xiangzamian No. 8
cotton leaves
growth and development
