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研究表明,不同质地的潮土在增施有机肥后,能明显增加根茬(有机碳)归还土壤的数量。黄淮海平原的中低产土壤的有机质含量长期处于较低水平,可能与每年进入土壤的有机质(碳)数量不足有关。
The results showed that the soil with different textures could significantly increase the amount of stubble (organic carbon) returned to soil after the application of organic manure. The organic matter content of middle- and low-yield soils in the Huang-Huai-Hai Plain has long been at a low level, probably related to the insufficient amount of organic matter (carbon) entering the soil each year.