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7年微区试验表明，在黄淮海季风区内陆盐渍土一年两熟种植制度下，农田土壤有机质平衡含量约为1.50％。在相同的气候，土壤基础肥力，土壤质地条件下，采取不同措施，土壤有机质积累速率不同，到达土壤有机质平衡含量的时间不同。施用碳氮比大，木质素含量高的有机肥，土壤有机质积累快;施用同种有机肥，土壤有机质在达到平衡含量前，有机质的积累量与施肥量呈直线相关。为满足黄淮海平原农田稳产高产和盐渍上抑盐对土壤有机质含量的要求，采用秸秆直接还田，秸秆过腹还田或棉田种植冬牧草，发展畜牧业，增加优质粪肥施用量是提高盐渍土土壤有机质有效措施。
Seven years of micro-area experiments show that in the Huang-Huai-Hai monsoon area of inland saline soil annual planting system, the balance of soil organic matter content of about 1.50%. Under the same climate, soil basic fertility and soil texture, different measures were taken and the accumulation rates of soil organic matter were different, and the time to reach the equilibrium content of soil organic matter was different. The application of organic manure with large carbon and nitrogen ratio and high lignin content accumulated faster in the soil. Before applying the same organic manure, the accumulation of organic matter was linearly correlated with the amount of fertilizer application before the soil organic matter reached equilibrium content. In order to meet the requirements of stable and high yields of farmland in the Huang-Huai-Hai Plain and salt suppression on soil organic matter content, direct straw, straw over-the-field or winter forage planting in cotton fields should be used to develop animal husbandry and to increase the application of high-quality manure to increase the salt content Soil organic matter effective measures.