棉花叶枝结铃规律的研究

研究结果表明 ,对于种植密度为 375 0 0株 /h 左右的棉花群体 :(a)保留植株下部的叶枝 ,具有增加单株现蕾数量的作用 ,单株保留叶枝数与单株现蕾总数之间呈正相关关系 (r =0 970 6 ) ;(b)单株留叶枝数与单株蕾铃脱落之间也呈正相关关系 (r=0 96 0 4)。可见 ,保留棉花叶枝带来促进现蕾数量增加的作用能被脱落率的增加抵消。不同留叶枝数的研究结果证明 ,棉花单株留叶枝数在 1～ 2条时 ,适当控制水肥措施 ,有利于抓住叶枝上的早期花蕾 ,促进单株现蕾数增加 ,也可避免过多叶枝引起的蕾铃脱落。

Studies on the Regulation of Setting Buds in Leaf Shoots of Cotton Plants

Results of studies showed that, in a cotton colony with a planting density of about 25000 plants per mu, remaining lower leaf shoots could increase the number of setting buds on a single cotton plant was positive(r=0 9706). But the relationship between the number of leaf shoots and the abscission of buds and bolls of a single cotton plant was also positive(r=0 9604). It was concluded that, under the condition of spaced planting.