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棉花早衰不能充分利用无霜期内的光热资源,限制了产量的继续提高。我区每年均有较大面积的棉花早衰,并有红叶枯和褐叶枯两种类型,成为当前生产上一个急需研究和解决的问题。我区一年当中的气候特点是两头低温,中间阴雨。后期干旱和低温,使棉花根系生理活性急剧衰减,从而加剧早衰的发生,影响棉
Premature aging of cotton can not make full use of the light and heat resources in the frost-free period, limiting the continuous increase of output. Each year in our district, there is a large area of premature aging of cotton, and there are two types of red leaf blight and brown leaf blight, which has become an urgent problem to be studied and solved in the current production. The climate in our district during the year is characterized by two low temperatures and a rainy day in the middle. Post-drought and low temperature, so that the sharp decline in physiological activity of cotton roots, thus exacerbating the occurrence of premature aging, affecting cotton