农一师二团地处天山南麓，塔里木盆地西北边缘，土镇质地粘重，且有红棕色重团不透水层，土地宜耕性差，盐碱较重。经过数十年改良，土质有所改善。进入80年代，棉花种植面积逐年增长，土地轮养周期延至6－8年，再加之连年机械耕作土因深度在18—2比m、22cm以下土镶致密板结， A group of two farmers is located in the south of Tianshan Mountains, the northwestern edge of the Tarim Basin, the town sticky texture, and reddish brown mass of impermeable layer, the poor soil to be cultivated, saline heavier. After decades of improvement, soil quality has improved. Into the 80’s, the cotton acreage increased year by year, the land rotation period extended to 6-8 years, coupled with years of mechanized farming because of soil depth of 18-2 m, 22cm below dense soil compaction,