害虫与天敌个体数量比值对天敌竞争作用指数的影响——以茶园花蓟马及其主要天敌为例  

Impact of the population ratio between pest and predator on the competitive effect index among predators:taking Frankliniella intonsa and their major natural enemies as an example

作　　者：程鸿浩 陈诗燕 周夏芝[2] 邹运鼎[2] 毕守东[1] CHENG Honghao;CHEN Shiyan;ZHOU Xiazhi;ZOU Yunding;BI Shoudong(College of Information and Artificial Intelligence,Anhui Agricultural University,Hefei 230036,China;College of Forestry and Horticulture,Anhui Agricultural University,Hefei 230036,China)

机构地区：[1]安徽农业大学信息与人工智能学院,合肥230036 [2]安徽农业大学林学与园林学院,合肥230036

出　　处：《生态学报》2024年第11期4914-4921,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金(30871444);安徽省自然科学基金(11040606M71);安徽省教育厅重点项目(KJ2008A139)。

摘　　要：为合理保护和利用自然天敌,明确害虫与天敌个体数量比值对天敌竞争作用指数(竞争系数和竞争强度指数)的影响。运用竞争系数分析法、灰色关联度分析法、竞争强度指数分析法和Pearson相关系数法对2020年、2021年三种茶园花蓟马与主要天敌个体数比值对主要天敌竞争作用指数的影响。三种茶园两年数据汇总分析得出,竞争系数和竞争强度指数均值与花蓟马-天敌比值的Pearson相关系数分别为-0.7858和-0.8199;2020年三种茶园数据综合分析得出,竞争系数和竞争强度指数均值与花蓟马-天敌比值的Pearson相关系数分别为-0.7391和-0.7819;2021年三种茶园竞争作用指数与比值的跟随关系不明显,主要是平阳特早茶园9种主要天敌以外的其他天敌影响了竞争作用趋势。综合多种分析结果得出,9种主要天敌的竞争作用指数与花蓟马-天敌比值呈显著负相关,其中三突花蟹蛛(-0.9936)负相关性最显著,鞍型花蟹蛛是高比值组竞争作用指数最高的天敌。研究结果为利用天敌开展花蓟马生物防治提供参考。In order to rationally protect and utilise natural enemies,we clarified the effects of the ratio of the number of individuals of pests and natural enemies on the indices of the competitive effects of natural enemies(competition coefficient and competition intensity index).In this study,we applied the competition coefficient analysis,grey correlation analysis,competition intensity index analysis and Pearson correlation coefficient method to investigate the effects of the ratio of the number of individuals of Frankliniella intonsa to their main natural enemies on the competitive role index of the main natural enemies in three kinds of tea gardens in 2020 and 2021.According to the data collected from the three tea plantations in two years,the Pearson correlation coefficients of competition coefficient and competition intensity index with the ratio of thrips to natural enemies were-0.7858 and-0.8199,respectively.According to the comprehensive analysis of the data of the three tea plantations in 2020,the Pearson correlation coefficients between the mean competition coefficient and competition intensity index and the ratio of thrips to natural enemies were-0.7391 and-0.7819,respectively.The following relationship between the competitive effect index and the ratio in the three tea gardens in 2021 was not obvious,mainly because the natural enemies other than the nine main natural enemies in the‘Pingyang Tezao’Tea Garden affected the competitive effect trend.Combining the results of multiple analyses,it was concluded that the competitive action indices of the nine major natural enemies were significantly negatively correlated with the F.intonsa-natural enemy ratios,with the most significant negative correlation being that of the Misumenopstricuspidatu(-0.9936),and the Xysticus ephippiafus was the natural enemy with the highest competitive action indices in the high-ratio group.The results provide a reference for the use of natural enemies in the biological control of F.intonsa.

关 键 词：花蓟马 天敌 灰色关联度 竞争系数 竞争强度指数 

分 类 号：S435.711[农业科学—农业昆虫与害虫防治] S476[农业科学—植物保护]