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在新疆灌溉荒漠土壤条件下,由于土壤中氮素含量低,全氮量一般为0.01—0.15%,大多不超过0.1%,全磷(P_2O_5)达0.15～0.3%(速效磷含量不高),全钾1.5—2.9%,速效钾400—500ppm甚为常见,钙、镁、硫、钠等元素含量更高,且水分条件能得到保证,故施用氮肥增产显著。根据解放以来新疆氮肥田间试验结果,每斤纯氮增产小麦
Under the condition of irrigated desert soil in Xinjiang, the content of total nitrogen is generally 0.01-0.15%, mostly not more than 0.1% and the total phosphorus (P 2 O 5) is 0.15-0.3% (the content of available phosphorus is not high) due to the low content of nitrogen in soil. Total potassium 1.5-2.9%, available potassium 400-500ppm is very common, calcium, magnesium, sulfur, sodium and other elements higher, and moisture conditions can be guaranteed, so the use of nitrogen increased significantly. According to the results of field trial of nitrogenous fertilizer in Xinjiang since the liberation, wheat yield per kilogram of pure nitrogen increased