倒春寒是农业灾害之一,对棉花生产影响很大。倒春寒使田间刚出苗的棉花遭受不同程度的冷害,从而造成烂种、烂根、死苗或病苗多发等现象,致使棉苗发育推迟,造成棉田缺苗、断垄,形成小老苗,从而影响棉花产量。因此,对于倒春寒,必须加以警惕,并及早做好预防和防治工作,为棉花丰产打好基础。 Late spring is one of agricultural disasters, a great impact on cotton production. In the late spring, cotton in the field was experiencing different degrees of chilling damage, resulting in the phenomenon of rotten, rotten roots, dead or seedling disease, which delayed the development of cotton seedlings, resulting in the lack of seedlings and breaking the ridge in cotton fields to form small seedlings. Affect cotton production. Therefore, in late spring, we must be vigilant and early prevention and prevention work well laid the foundation for the cotton yield.