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最近,山东济阳读者王怀英来电说,去年她的棉花生长过程中出现早衰,导致减产。她想了解造成棉花早衰的原因是什么,如何防治?本刊请教有关专家后,答复如下:导致棉花早衰的原因有以下几种:第一,因病导致的早衰。棉花病害以黄枯萎病危害最普遍、最重。发病与温度关系密切,枯萎病在苗期地温20℃左右时开始出现病状,25℃～30℃时病情受抑制。黄萎病发病温度较枯萎病高,所以发病高峰较枯萎病
Recently, Wang Huaiying, a reader in Jiyang, Shandong Province, said: "Premature aging occurred during her cotton growth last year, which led to a decrease in production. She would like to know what causes cotton premature aging, how to prevent this magazine consult the experts, the answer is as follows: lead to cotton premature aging due to the following: First, due to illness caused by premature aging. Cotton blight wilt disease most common, the most serious. Pathogenesis and temperature are closely related to Fusarium wilt onset in the seedling temperature of about 20 ℃, 25 ℃ ~ 30 ℃ when the disease was inhibited. The incidence of Verticillium wilt than Wilt disease, so the peak incidence of Fusarium wilt disease