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我省棉区绝大部分分布在半干旱地区,雨量少而分布不均匀,水源不足,土壤瘠薄,水分的利用率低,加之棉花生长前期低温和后期霜早,不能充分利用有效的无霜期,“干旱、瘠薄、低温”三个不利的自然因素,是我省棉花生产徘徊不前的根本原因。因此,半干旱棉区必须从干旱这个特点出发,走“雨育农业”的道路,充分发挥现有500毫米左右天然降水的最大增产作用。
Most cotton areas in our province are distributed in semi-arid areas, with less rainfall and uneven distribution, insufficient water resources, poor soil conditions and low utilization rate of water. Combined with the low temperature at early growth stage of cotton and early frost in early stage, effective frost-free period can not be fully utilized. Drought, infertility, low temperature “three unfavorable natural factors, the cotton production in our province is the root cause of stagnation. Therefore, the semi-arid cotton region must proceed from the characteristics of drought and follow the path of ”rain-fed agriculture" to give full play to the maximum stimulation effect of the existing natural precipitation of about 500 mm.