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泽普县属暖温带干旱大陆性气候,光照充足,热量丰富,气候干燥,风沙多,无霜期长,日、夜温差大。全年日照时数为4435～4446小时,平均无霜期212天,适合栽培棉花。一、棉花营养特性1.生育特性①喜温好光棉花喜温,不耐寒冷;好光,不耐荫蔽。要求年日照时数2000小时以上,日照率40%以上。②营养生长与生殖生长并进时间长从2～3片真叶期始,花芽分化到停止生长都是并进阶段,约占
Zepu County is a temperate arid continental climate, adequate light, heat, dry climate, sand and more frost-free period, day, night temperature difference. The annual sunshine hours for 4435 ~ 4446 hours, the average frost-free period of 212 days, suitable for cultivation of cotton. First, the nutritional properties of cotton 1. Fertility characteristics ① Xi-Wen good cotton light temperature, intolerance cold; good light, impatient shade. Requirements of annual sunshine hours 2000 hours, sunshine rate above 40%. ② vegetative and reproductive growth go hand in hand from 2 ~ 3 true leaf period, the flower bud differentiation to stop the growth stage are advancing, accounting for about