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作 者 ：周雪芳, 朱晓伟, 陈泽恺, 朱梦迪, 朱劝洁, 莫亿伟, 曾文涛, 胡一鸿, 罗文

期 刊 ：核农学报 2016年 30卷 5期 页码：971-977

关键词：水稻；青蛙；细菌；放线菌；真菌；

Keywords:rice, frogs, bacteria, actinomycetes, fungi,

摘 要 ：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6090 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。

Abstract:In order to investigate effect of eco-planting and breeding of rice and frogs on the relation between soil nutrient supplying and the functions of microbiology the indexes, including the population of soil microorganisms, microbial activities, acid phosphatase activities, and inorganic phosphorus contents in treatment and control field, which was applied with pesticides and chemical fertilizers, were determined at different stages. The results indicated that the number of bacteria, actinomycetes and fungi increased with the prolonged periods after planting and breeding of rice and frogs. The microbial activities, the acid phosphatase activities, and the inorganic phosphorus contents in the treated group were significantly higher than these in the control group after the frogs were bred from 60 to 90 d. In addition, these dominant microorganisms benefited for the nutrition circulation, and the frog breeding promoted microbial activities, acid phosphatase activities, and soluble inorganic phosphorus contents of the soil. Thus, the eco-planting and breeding of rice and frog increased the number of soil microorganisms including Bacillus megatherium and microbial activities, improved acid phosphatase activities, promoted the transfer of indissolvable phosphorus to the dissolvable phosphorus, and finally increased the use of soil phosphorus. In conclusion, eco-planting and breeding of rice and frogs provided a new mode for increasing economic benefits of rice field.

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