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土壤有机质含量是土壤肥力高低的重要指标,在北方旱田土壤上,同一土种作物产量的高低常与土壤有机质含量成正相关.因此提高土壤有机质含量并保持其平衡是提高土壤肥力和作物产量的重要措施.增
Soil organic matter content is an important index of soil fertility. In the northern upland soil, the crop yield of the same soil species is positively correlated with soil organic matter content, so increasing soil organic matter content and maintaining its balance is important to increase soil fertility and crop yield Measures