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对重庆市万州区典型的3个亚类紫色土土壤的有机质、全氮、有效磷、速效钾和速效磷进行化验分析,结果表明:有机质和全氮含量总体上处于缺乏水平;土壤碱解氮平均含量、速效磷含量均缺乏;中性紫色土、酸性紫色土的速效钾含量处于中量水平,石灰性紫色土速效钾含量偏低。调查表明,应针对3个亚类紫色土的性质采取合理的利用方式,改进施肥措施,减少化学氮肥的施用,增加有机肥、磷肥和钾肥的施用量。
The results showed that the contents of organic matter and total nitrogen were in a deficient condition on the whole, and the contents of soil available nitrogen, total nitrogen, total nitrogen, available phosphorus, total available nitrogen and total phosphorus in the soils of three typical purple soil types in Wanzhou District of Chongqing Municipality were analyzed. The average content of available phosphorus content are lacking; neutral purple soil, acid purple soil available potassium content in the amount of level, lime purple soil low-available potassium content. The survey shows that the rational use of the three sub-types of purple soil should be taken to improve fertilization measures, reduce the application of chemical nitrogen fertilizer and increase the application of organic fertilizer, phosphate fertilizer and potassium fertilizer.