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作者方正等在冀中山麓平原区小麦——玉米一年两熟的集约种植情况下,采用裂区设计研究了秸秆直接还田配施氮、磷化肥的土壤生物学效应.通过3年的定位试验研究,初步认为,秸秆还田明显增强了土壤的生物活性.秸秆还田后土壤酶活性,特别是转化酶活性明显提高,且土壤酶活性的大小与土壤速效性养分含量有密切的相关性,在一定程度上反映了土壤微生物学过程的强度.试验中秸秆全还田土壤过氧化氢酶活性略高于不还田处理,但未达到5%统计显著水平.过氧化氢酶活性与有机质含量达到5%显著正相
The author Fang Zheng et al. Studied the soil biological effects of direct straw returning with nitrogen and phosphorus fertilizers using split-plot design under intensive planting of wheat-corn one year in the plains of Hebei Province. It is preliminarily believed that straw returning to soil significantly enhances the biological activity of soil.The soil enzyme activity, especially invertase activity, significantly increases after straw returning to the soil, and the soil enzyme activity is closely related to the soil available nutrient content , To a certain extent, reflect the intensity of soil microbiological process.The activities of catalase in the soil with straw returning to the field were slightly higher than those without returning to the field, but did not reach 5% of the statistical level.Catalase activity and organic matter The content reached 5% significant positive phase