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贵州省耕地土壤有机质含量问题,解放前后曾进行过大量的研究,但全面、系统和全省性的统一取样分析的并不多。全国第二次土壤普查的开展,为全省提供了大量的土壤有机质分析数据。由于这些结果是全省若干个化验室提供的,难免存在一定差异,不能准确反映各地土壤有机质含量水平。1985年我所承担的贵州省肥料区划工作,根据统一要求,在全省86个县(市)按主要农耕地面积,各采取耕层农化土样10个,合计846个,由我所分析室按丘林法统一测定了土壤有机质含量。现将全省土壤有机质含量水平及分布情况介绍如下。
A large number of studies have been conducted on the content of soil organic matter in cultivated land in Guizhou Province before and after liberation. However, there are not many comprehensive, systematic and provincial unified sampling analyzes. The second national soil census carried out for the province to provide a large number of soil organic matter analysis data. Since these results are provided by several laboratories in the province, there are inevitably some differences and can not accurately reflect the soil organic matter content in various places. In 1985, in accordance with the unified requirements, I undertook the fertilizer zoning in Guizhou Province. According to the unified requirements, 10 farmed soil samples were collected from 86 main counties (cities) in 86 provinces (cities) in the province, totaling 846, as analyzed by me The soil organic matter content was determined by the unified method of Chuulin method. The province now soil organic matter content levels and distribution are described below.