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北疆棉区是我国务植棉区中界限最靠北的一个亚区。本区由于春季气候回升较迟,且不稳定,秋季降温较快,因而棉花受霜冻和秋季低温冷害的影响较大,易造成霜后花多。针对生产上存在的这一突出问题,应运用地膜覆盖、高密、矮化栽培,同时要十分注意选育推广较耐低温冷害、早熟优质丰产抗病的棉花品种。
The northern cotton area is the sub-district in the northernmost boundary of China’s cotton-growing area. Due to the late spring climate recovery and instability, rapid cooling in autumn, so the cotton by the impact of frost and cold chilling injury in the larger, easily lead to more flowers after the frost. In view of this prominent problem in production, we should use plastic film mulching, high density and dwarfing cultivation. At the same time, we should pay great attention to selecting and popularizing cotton varieties that are more resistant to chilling injury, precocious, high yield and disease resistance.