蔬菜残株、生物菌肥施用下日光温室辣椒土壤微生物学特征

为了明确蔬菜残株、生物菌肥对日光温室土壤的改良作用，测定了土壤微生物群落功能多样性、酶活性及速效养分含量等指标。结果表明，与对照（未施用蔬菜残株、生物菌肥）相比，蔬菜残株、生物菌肥单一施用均提高土壤微生物群落Shannon、Simpson和McIntosh指数，蔬菜残株的作用大于生物菌肥，且随蔬菜残株施用量的增加促进作用增强。高量蔬菜残株（45000 kg/hm2）处理的McIntosh指数比低量蔬菜残株（22500 kg/hm2）、生物菌肥（75 kg/hm2）和对照分别增加26.29%、37.87%、49.36%。低量蔬菜残株与生物菌肥对土壤酶活性、速效养分含量的提高有明显的协同作用；低量蔬菜残株与生物菌肥共同处理的土壤磷酸酶活性分别比单一低量蔬菜残株、生物菌肥处理增加40.35%、82.82%，有机质含量分别升高19.28%、41.94%，速效钾含量增加20.57%、92.97%。

Soil microbiologic characteristics under vegetable residues and bacterial manure application in greenhouse

Functional diversity of microbial communities,enzyme activities and available nutrient contents of soil were determined to study the improving effects of vegetable residues and bacterial mature on soil in greenhouse.The improving effect of single vegetable residues is larger than that of single bacterial mature,and the better the improving effect,the more vegetable residues.The McIntosh index of vegetable residues with high applying quantity is increased by 26.29%,37.87% and 49.36% compared with the treatme...