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为了探讨稻蛙生态种养对水稻试验田土壤养分供给与微生物作用之间的关系,以施用化肥与农药的稻田为对照,分别对稻蛙种养的试验田和对照田在水稻种植后的不同时期的土壤微生物数量、微生物活度、酸性磷酸酶活性和无机磷含量进行检测。结果表明,青蛙养殖后,试验田的细菌、放线菌和真菌数量随着养殖时间延长而增加,并在养殖青蛙60~90 d后,土壤微生物数量、活度、酸性磷酸酶活性和无机磷含量显著高于对照田。此外,稻田土壤细菌、放线菌、真菌的优势种也向利于土壤营养循环的方向发生改变。因此,稻蛙生态种养可增加土壤微生物数量,提高微生物活度,提高巨大芽孢杆菌数量以及酸性磷酸酶活性,促进难溶性的磷向可溶性磷的转化,从面提高试验田土壤磷的供应能力。稻蛙生态种养为稻田的高效利用提供了一种新模式。
In order to explore the relationship between the ecological cultivation of rice frog and soil nutrient supply and microbial action in paddy field, the paddy field with chemical fertilizers and pesticides was used as control. The experimental and control fields of paddy frog Soil microbial quantity, microbial activity, acid phosphatase activity and inorganic phosphorus content were measured. The results showed that the number of bacteria, actinomycetes and fungi in the experimental field increased with the prolongation of breeding time after frog breeding. After the frogs were cultured for 60-90 d, the quantity and activity of soil microbes, the activity of acid phosphatase and the content of inorganic phosphorus Significantly higher than the control field. In addition, the dominant species of soil bacteria, actinomycetes and fungi in paddy soil also changed in favor of soil nutrient cycling. Therefore, the ecological cultivation of rice frog increased the amount of soil microorganisms, increased the activity of microorganisms, increased the number of Bacillus megaterium and acid phosphatase, promoted the conversion of insoluble phosphorus to soluble phosphorus, and increased the supply of soil phosphorus in the experimental field. The ecological planting and breeding of rice frog provides a new model for the efficient utilization of rice fields.