果园生草对中国果树-土壤系统生产性能影响的Meta分析OA北大核心CSTPCD

Sod culture plays an important role in improving orchard environment,soil ecology,and fruit physiology,however,the effects of orchard green manure on fruit yield and quality,and soil parameters are still not clear.By collecting 669 sets of data,the effects of grassing on fruit yield and its influencing factors,and the response of fruit quality,disease incidence,soil physicochemical properties and microbial diversity to sod culture were studied by Meta analysis.The results showed that grass growing significantly increased fruit yield(11.9%),for the orchard located in the area where the yearly average temperature lower than 10℃,or the soil pH higher than 7,or the soil available P content lower than 5 mg·kg-1 or higher than 40 mg·kg-1,or the soil available K content higher than 100 mg·kg-1,grass growing had no significant effects on fruit yield.Grass kinds,available K content and orchard type were the major factors impacting the yield response,which accounting for 17.4%,9.8%and 9.7%of the relative influence,respectively.In addition,fruit quality was improved and the incidence rate was reduced by grass growing.Orchards grassing system also led to an increase in soil organic matter and nutrients content.In 0-20 cm depth,soil water content,soil porosity,key enzyme activities,soil microbial carbon and nitrogen content,the number of bacteria,fungi and actinomycetes,and the microbial Shannon index and richness were also increased significantly.Therefore,due to its significant positive role in improving the productivity of orchard-soil system,sod culture in orchard is one of the effective measures to achieve the green sustainable development of orchard in the future.