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我省棉花苗期雨水较多,且往往有寒潮低温侵袭,若长时间低温阴雨,棉苗抗病力减弱,容易感病死苗。应及时抓好棉花的田间管理。 清沟排渍:土壤水分过多是阻碍棉苗根系发育的主要原因。据测定,开沟沥水好的棉田要比开沟差的棉株高3厘米,主根长15.5厘米,侧根多5条,发病率减轻2.8％。所以,棉田要开好回沟,做到雨住水出,促进壮苗早发。
Cotton seedlings in our province more rain, cold and often have low-temperature invasion, if prolonged cold and rainy, cotton seedling weakened disease resistance, susceptible to disease. Cotton fields should be promptly managed. Chingogou row of stains: excessive soil moisture is hindered cotton root development of the main reasons. It is determined that good cotton ditching drainage than open cotton poor cotton plant 3 cm, the main root length of 15.5 cm, lateral root more than 5, the incidence decreased by 2.8%. Therefore, cotton fields should be good back to ditch, rain and water, to promote strong seedlings early hair.