套种平托花生对芒果园节肢动物群落多样性的影响

为探究平托花生的种植对芒果果园节肢动物群落多样性的影响,对其生境下2018年8月至2019年11月芒果园芒果膨大期,对果园节肢动物群落系统调查(间隔15d查1次,五点取样法)。对多样性指数、均匀度指数、优势集中性指数、物种数量、个体数量分析,并与清耕生境进行了比较。结果表明,平托花生生境下果园节肢动物群落的物种数量约为清耕生境的2倍,个体数量为4倍,物种多样性、群落稳定性均高于清耕生境,在天敌亚群落方面也表现出相似趋势。而害虫亚群落方面,清耕生境害虫数量约为平托花生生境2倍。综合分析表明,芒果园种植平托花生有利于提高群落稳定性,增加天敌的个体数量,抑制害虫的暴发,便于发挥天敌的控制作用,是一种有效的防控害虫的措施。

Effects of Arachis pintoi cv.Reyan intercropping on the diversity of arthropod community in mango orchard

To explore the impact of rachis pintoi cv.Reyan intercropping on the arthropod community diversity in the mango orchard,based on the systematic survey of arthropod community in the mango-A rachis pintoi cv.Reyan intercropping system in mango puffing stage from August 2018 to November 2019,we analyzed the diversity index,evenness index,dominant concentration index,species number,and the individual number of arthropod in both intercropping system and clean tillage system.The results showed that the species number and the number of individuals of the arthropod community in the mango-Arachis pintoi cv.Reyan intercropping system was about twice and four times that of the clean tillage system.Besides,the species diversity and community stability were all higher than that in the clean tillage system.These characteristics of the natural enemy sub-community also showed similar trends.In terms of pest sub-community,the number of pests in the clean tillage system was about twice that of in the intercropping system.The comprehensive analysis showed that intercropping Arachis pintoi cv.Reyan with mango was an effective pest control measure,which was beneficial to improve the stability of the arthropod community,increase the number of natural enemies,suppress the outbreak of pests,and facilitate the action of natural enemies.