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棉花早衰是丘陵地区发展棉花生产以来长期存在的一个突出问题。据各地调查,历年早衰面积都在30%以上,一般每亩减产2~3成,重者减产5成左右。针对这一问题,1982~1984年,我们进行了面上调查和田间试验研究,基本摸清了丘陵地区棉花早衰的成因,并提出防止棉花早衰的措施。 (一)棉花早衰的形成原因
Premature aging of cotton is a prominent problem that has existed for a long time since cotton production in hilly areas. According to local surveys, the area of premature aging in all the years is over 30%, generally reducing the output by 2 to 3 percent per mu and reducing the output by about 50 percent. In response to this problem, from 1982 to 1984, we carried out an investigation on the surface and a field experiment to basically find out the causes of cotton premature aging in hilly areas and put forward measures to prevent premature aging of cotton. (A) the reasons for the formation of cotton premature aging