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以腐熟发酵过的猪粪、牛粪、羊粪为材料,采用外源添加处理的方法,探讨不同用量动物粪便对茶树根际土壤酸度、微生物生物量及区系影响,以期为研究茶树根际土壤改良提供依据。结果表明,不同动物粪便处理后,能有效调节茶树根际土壤的酸度;随着处理动物粪便用量的增加,茶树根际土壤的微生物生物量碳、微生物呼吸强度、微生物生物量氮及细菌、放线菌、氨化细菌、亚硝酸细菌、反硝化细菌、好气性自生固氮菌、纤维素分解菌的数量呈现先上升后下降的趋势,而真菌数量则相反;不同动物粪以猪粪用量1.5 kg/m2,牛粪、羊粪用量2.0 kg/m2时对土壤微生物环境的改善程度最佳;不同粪便处理对茶树根际酸度的调节作用及对土壤微生物数量影响最强时,以猪粪最高、羊粪次之、牛粪最低。上述结果表明动物粪便的使用能有效调节茶树根际土壤的酸化,改善土壤微生物生存环境,提高土壤微生物活性。
In this study, the excrement of pig manure, cow manure and sheep manure were used to study the effects of excrement on the acidity, microbial biomass and flora of rhizosphere soil of tea plantations. Soil improvement to provide the basis. The results showed that the acidity of tea rhizosphere soil could be effectively regulated by different animal excrement treatments. With the increase of manure consumption, microbial biomass carbon, respiration intensity, microbial biomass nitrogen and bacteria in rhizosphere soil of tea plantation The number of actinomyces, ammoniated bacteria, nitrite bacteria, denitrifying bacteria, aerobic Azotobacter and cellulose-decomposing bacteria firstly increased and then decreased, while the fungi had the opposite trend. / m2, cow manure and sheep manure 2.0 kg / m2, the best improvement of soil microbial environment; different fecal treatment of tea rhizosphere acidity regulation and the strongest impact on soil microbial population, the highest pig manure, Followed by sheep manure, cow dung minimum. The above results show that the use of animal manure can effectively regulate the acidification of tea rhizosphere soils, improve the living environment of soil microorganisms and enhance the activity of soil microorganisms.