覆草对桃园主要害虫的控制效果及生物多样性的影响  

Effects of Ground Cover on Main Pests’Control and Biodiversity in Peach Orchard

作　　者：王旭东 WANG Xudong(Fuyu Agricultural Technology and Extension Station in Susong County,Anqing 246500,Anhui,China)

机构地区：[1]安徽省安庆市宿松县孚玉镇农技站,安徽安庆246500

出　　处：《农学学报》2022年第11期11-13,19,共4页Journal of Agriculture

基　　金：农业新技术推广专项(2018AQXJ005)。

摘　　要：覆草是果园生态调控的重要手段,通过田间试验比较了不同覆草园害虫和天敌的发生情况及其对果园生物多样性的影响。研究发现:与清耕园相比,覆草园天敌数量显著较高,而且靠近麦田的覆草园天敌数量明显高于其他覆草园,覆草对害虫的控制效果明显;覆草桃园节肢动物的物种生物多样性、丰富度指数、均匀性指数等都明显大于清耕桃园,而且苜蓿覆草桃园的生物多样性指数明显大于三叶草覆草桃园。Ground cover is an important means to regulate orchard ecological system.This paper compared the occurrence of pests and natural enemies in peach orchards with and without ground cover and the effects on the biodiversity of orchards in field condition.The results showed that the number of natural enemies in the orchards with ground cover was significantly higher than that in the orchards without ground cover,and the number of natural enemies in the ground cover orchards close to wheat field was significantly higher than that in other orchards with ground cover;so ground cover had obvious control effect on pests.The species richness index,diversity index and evenness index of arthropod in peach orchards with ground cover were significantly higher than those in the orchards without ground cover,and the biodiversity index of peach orchards with alfalfa cover was significantly higher than that of peach orchards with trefoil cover.

关 键 词：果园 生态控制 覆草 生物多样性 害虫 

分 类 号：Q969.93[生物学—昆虫学]