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在山西省棉田面积中约有三分之二以上是旱地棉,由于受天然降雨的制约,产量一直不高不稳。因此,如何充分利用天然降雨,发挥现有降雨的增产作用是提高旱地棉花产量、发展棉花生产的关键问题。一、旱地棉花产量与自然资源的关系晋南是我省主要植棉区,本区位于黄河流域中游,属黄土高原地带半干旱地区,全年光、热资源比较丰富,但降雨较少,年均500毫米左右,特别是年际间和年内分布不
About two thirds of the area of cotton fields in Shanxi is dry cotton, which is not stable due to natural rainfall. Therefore, how to make full use of natural rainfall and exert the effect of increasing rainfall is the key issue to improve the cotton yield in dryland and to develop cotton production. First, the dry land cotton production and natural resources Jinnan is the main cotton growing area in our province, the area is located in the middle reaches of the Yellow River Basin, is a semi-arid area of the Loess Plateau, the annual light and heat resources are abundant, but less rainfall, year Are about 500 mm, especially during the year and year distribution is not