【摘要】 以湖北省15种主要类型水稻土为材料,利用耗竭盆和大田钾肥肥效试验来确定不同类型水稻土的供钾能力。结果表明:位于湖北省内南部的水稻土多数供钾能力较低尤其咸宁,大冶的供试水稻土是严重缺钾土壤;其它类型水稻土的供钾能力较好,其中由汉江冲积物形成的湖积物,花岗片麻岩区河流冲积物以及鄂北、鄂西北地区水稻土,供钾能力相对良好。在现阶段,除鄂南的水稻土外,土壤供钾能力仍不足以构成水稻生产的限制因素。更多还原

【Abstract】 Different potassium-supplying abilitie were found among the various typesof fifteen paddy soils in Hubei province.Potassium uptaken by rice Succesiveexhausted pot cultivation and the field Plot experiment effect of K fertilizerwere used to measure the K Supplying power of paddy soils. As this result shows: All the soils examined (except those in south ofHubei province, in particular Xian-Ning county and Da-ye county)maybesically provide rice crops with to different degree potassium nutrition, atleast in recent years. As the present except for the paddy soils those in south of Hubei province.Other paddy soils are not likely to become limited factor of the rice production.更多还原