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近年来,随农作物产量不断提高和化学氮肥的大量使用,土壤中速效钾的含量急剧下降。据土壤测试,目前全市70％耕地土壤速效钾含量在100mg/kg以下。1995～1996年我们选择不同生态和土壤类型的缺钾土壤进行了增施钾肥的试验。1试验概况 试验在香沟村和新集村进行。前者土种为黄白土,土壤速效钾含量为73.25mg/kg;后者土种为淤
In recent years, with the continuous increase of crop yields and the extensive use of chemical nitrogen fertilizer, the content of available potassium in the soil drops sharply. According to the soil test, 70% of the cultivated land available potassium in the whole city is below 100mg / kg. From 1995 to 1996, we selected potassium-deficient soils with different ecological and soil types for potash fertilization. 1 Test Profile The experiment was carried out in Xianggou Village and Xinji Village. The former soil is yellow and white soil, soil available potassium content of 73.25mg / kg; the latter soil silt