本省乃是我国粮棉生产区之一，近年来，由于水资源的严重匾乏，耕地面积的逐年减少，粮棉争地矛盾十分突出。如何使得在现有土地上粮棉产量有个同步提高，以充分发挥土地的潜力，提高土地利用率。解决种棉不能种麦种麦不能种棉，二者套作小麦产量太低的矛盾。为此，我们对一年 The province is one of the grain and cotton production areas in our country. In recent years, due to the lack of water resources and the decrease of cultivated area year by year, the contradiction between grain and cotton is very prominent. How to make the output of grain and cotton on the existing land have a simultaneous increase in order to give full play to the potential of land and improve land utilization. Solve the problem that cotton can not be planted with wheat and wheat can not grow cotton, and the two are contradicted with too low output of wheat. For this, we have a year