Animal-manure biochar used as a sustainable amendment to garden soil has been widely applied, and the animal-manure pyrolysis temperatures would also have a regulatory effect on soil functions because of their affections on biochar physio-chemical properties. Here we studied the effects of different dosages of swine-manure biochar on tea garden soil functions, with the swine-manure pyrolysis temperature differed at 350 and 500°C. The results showed that the improvement of soil microbial biomass carbon and nitrogen and enzyme activities was closely related to the addition of 0.5–2% (biochar wt/soil wt) swine-manure biochar. Under different conditions of different carbon application rates and carbon type, the addition of 2% swine-manure biochar pyrolyzed at 350°C showed the best effects on soil enzyme activities and microbial biomass carbon and nitrogen contents. Compared to the control, after the addition of 2% swine-manure biochar, sucrase, phosphatase, catalase, and urease activities increased by 63.3, 23.2, 50.3, and 27.9%, respectively. Microbial biomass carbon and nitrogen contents also increased by 36.4 and 34.3%, respectively. Our study indicated that the effectiveness of using animal-manure swine-manure biochar as a sustainable amendment to soil would provide evidence of tea garden soil improvement and the environmental response to the usage of biochars.

动物粪便生物炭作为花园土壤的可持续改良剂已得到广泛应用，动物粪便热解温度对生物炭理化性质的影响也会对土壤功能产生调节作用。在这里，我们研究了不同剂量猪粪生物炭对茶园土壤功能的影响，猪粪热解温度分别为 350 和 500°C。结果表明，土壤微生物生物量碳氮和酶活性的提高与添加0.5-2%（生物炭重量/土壤重量）猪粪生物炭密切相关。在不同的施炭率和炭种类的不同条件下，添加2% 350°C热解的猪粪生物炭对土壤酶活性和微生物生物量碳氮含量的影响最好。与对照相比，添加2%猪粪生物炭后，蔗糖酶、磷酸酶、过氧化氢酶和脲酶活性分别提高了63.3、23.2、50.3和27.9%。微生物生物量碳和氮含量也分别增加了 36.4% 和 34.3%。我们的研究表明，使用动物粪便猪粪生物炭作为土壤可持续改良剂的有效性将为茶园土壤改良和使用生物炭的环境响应提供证据。分别。微生物生物量碳和氮含量也分别增加了 36.4% 和 34.3%。我们的研究表明，使用动物粪便猪粪生物炭作为土壤可持续改良剂的有效性将为茶园土壤改良和使用生物炭的环境响应提供证据。分别。微生物生物量碳和氮含量也分别增加了 36.4% 和 34.3%。我们的研究表明，使用动物粪便猪粪生物炭作为土壤可持续改良剂的有效性将为茶园土壤改良和使用生物炭的环境响应提供证据。