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土壤有机质含量高低,是衡量土壤肥力高低的一个重要指标。保持和提高土壤有机质含量的问题,一直为大家所关心。特别是南通棉区,七十年代中期以来,各地普遍反映土壤有机质含量变化较大。为此,我们从1976年开始,进行了本区农田土壤有机质含量变化的定位观察,并从1980年,就麦秸、绿肥(蚕豆)、氮素化肥等的施用和作物根茬对土壤有机质含量的影响问题进行了田间小区和盆栽试验,研究保持和提高本地区土壤有机质含量的途径。
Soil organic matter content is a measure of the level of soil fertility is an important indicator. The issue of maintaining and enhancing soil organic matter content has always been of concern to all. Especially in the Nantong area, since the mid-1970s, the soil organic matter content has been widely reflected in various places. For this reason, we started from 1976 and observed the change of soil organic matter in this area. From 1980, we studied the effects of wheat straw, green manure (fava bean), nitrogen fertilizer and crop stubble on soil organic matter content Affect the problem Field plots and pot experiments were conducted to study ways to maintain and enhance soil organic matter content in the region.