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1996～1997年在南北疆棉区抽查了部分耕地土壤有效钾含量，并在棉花作物上布置了补钾肥试验。以通过与土壤普查时有效钾数据对比，说明自治区耕地土壤有效钾变化情况和补施钾肥对棉花生长发育及产量和品质的影响，为今后棉花科学补施钾肥提供依据。1．自治区耕地土堆钾素亏损严
In 1996-1997, the available potassium content of some arable land was spot-checked in cotton fields in southern and northern Xinjiang, and the potash fertilizer experiment was arranged on cotton crops. Through the comparison with the available potassium data in the soil survey, the effects of the available potassium in the cultivated land in the Autonomous Region and the effect of potassium fertilizer on the cotton growth, yield and quality are analyzed. It provides the basis for the future scientific supplementation of the potassium fertilizer. 1. Autonomous Region arable land mound K depletion strict