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以南疆叶尔羌河流域棉田土壤为研究对象,通过野外调查取样和室内试验的方法,采用全国第二次土壤普查养分分级标准为依据研究土壤中养分分布特征。研究结果,有机质平均含量为6.94 g/kg,53.2%的土壤呈缺乏状态;全氮平均含量为0.77 g/kg,53.3%的土壤呈较缺乏状态;全磷平均含量为0.16 g/kg,81.5%的土壤呈极度缺乏状态;全钾平均含量为12.13 g/kg,70.6%的土壤呈较缺乏状态;碱解氮平均含量为39.77 mg/kg,61.6%的土壤呈缺乏状态;速效磷平均含量为8.46 mg/kg,73.3%的土壤为中等含量;速效钾平均含量为175.93 mg/kg,69.7%的土壤含量较丰富,土壤养分含量随土壤深度增加而有较明显降低。
Taking the soil in the Yarkant River Basin of southern Xinjiang as the research object, the nutrient distribution characteristics of the soil were studied based on the second national soil nutrient classification standard through the methods of field investigation and sampling and laboratory experiments. The results showed that the average content of organic matter was 6.94 g / kg and 53.2% of the soil was in a deficient state. The average content of total nitrogen was 0.77 g / kg and 53.3% of the soil was in a deficient state. The average content of total phosphorus was 0.16 g / kg and 81.5 The average content of total potassium was 12.13 g / kg, 70.6% of the soil was in a deficient state. The average content of available nitrogen was 39.77 mg / kg, and 61.6% of the soil was in a deficient state. The average content of available phosphorus The average content of available potassium was 175.93 mg / kg, 69.7% of which was rich in soil. The content of soil nutrient decreased with the increase of soil depth.