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一、水肥在棉花生育期的作用水参与棉株体内各种生理生化反应;水具有较高的汽化热和导热性,通过蒸腾作用散失热量,使棉株保持体温,免受高温危害;水还是土壤养分的活化剂和养分运输的载体。棉株主要从土壤中吸收水分,土壤缺水时,水分养分供应同时受阻,重则致棉株永久性萎蔫,甚至旱死。棉花生育期所需的营养元素同等重要,只有需求
First, the role of water and fertilizer in the growth period of cotton water Participate in cotton plant physiological and biochemical reactions; water has high heat of vaporization and thermal conductivity, loss of heat through the transpiration, the cotton plant to maintain body temperature, from high temperature hazards; water or Soil nutrient activator and nutrient carrier. Cotton plants mainly absorb moisture from the soil, soil moisture, water and nutrient supply at the same time obstruction, weight is caused by permanent wilt cotton plants, or even die. The nutrients needed during the growth of cotton are equally important, only needs