基于Fuzzy分析的茶园游猎蛛取食小贯小绿叶蝉的种间竞争作用

Interspecific competition of wandering spiders feeding on Empoasca onukii in tea plantations based on Fuzzy analysis

【目的】探究茶园游猎蛛取食小贯小绿叶蝉Empoasca onukii的种间竞争作用,为合理保护和利用茶园游猎蛛防治小贯小绿叶蝉提供科学依据。【方法】运用灰色关联度法、Fuzzy分级法和竞争系数法对安徽农业大学科技示范园茶树Camelliasinensis‘农抗早’‘Nongkangzao’和‘平阳特早’‘Pingyangtezao’茶园小贯小绿叶蝉与游猎蛛的种群动态进行分析,研究不同游猎蛛之间的竞争关系,并得出竞争力最强的游猎蛛,再将灰色关联度与竞争系数相结合引申出竞争强度指数的概念以验证所得结果准确性。【结果】由灰色关联度结果可知:与小贯小绿叶蝉数量相关性最大的游猎蛛,‘农抗早’茶园为斑管巢蛛Clubiona reichlini(0.8967)和粽管巢蛛Clubiona japonicola(0.8902),‘平阳特早’茶园也为斑管巢蛛(0.8603)和粽管巢蛛(0.8571);根据竞争系数和竞争强度指数的方差分析结果可知:在取食茶园小贯小绿叶蝉时,无论竞争对手为何种游猎蛛,粽管巢蛛都与其他蜘蛛差异显著,其次为斑管巢蛛,且游猎蛛里斜纹猫蛛Oxyopes sertatus与两者差异极显著。【结论】取食茶园小贯小绿叶蝉时,粽管巢蛛和斑管巢蛛竞争力最强,斜纹猫蛛竞争力最弱。通过合理保护和利用粽管巢蛛和斑管巢蛛这类竞争力强的蜘蛛可达到有效防治小贯小绿叶蝉的目的。

[Objective]The objective is to explore the interspecific competition of wandering spiders feeding on Empoasca onukii in tea plantations,so as to provide scientific basis for the rational conservation and control of wandering spiders against E.onukii.[Method]The population dynamics of E.onukii and wander spiders in‘Nongkangzao’and‘Pingyangtezao’tea plantations in Science and Technology Demonstration Garden of Anhui Agricultural University in 2021 were analyzed using grey correlation method,Fuzzy classification method and competition coefficient method.The competitive relationship between different wandering spiders was studied and the most competitive wandering spiders were identified.By combining grey correlation degree with competition coefficient,the concept of competition intensity index was derived to verify the accuracy of the obtained results.[Result]According to the grey correlation results,it could be seen that the wandering spiders most correlated with the number of E.onukii were Clubiona reichlini(0.8967)and Clubiona japonicola(0.8902)in‘Nongkangzao’tea plantation,and‘Pingyangtezao’tea plantation was also dominated by C.reichlini(0.8603)and C.japonicola(0.8571).Based on the variance analysis results of competition coefficient and competition intensity index,it was found that C.japonicola differed significantly from other spiders,followed by C.reichlini.Oxyopes sertatus differed very significantly from the two in feeding on E.onukii,regardless of the type of wandering spider in the competition.[Conclusion]When feeding on E.onukii in tea plantations,C.japonicola and C.reichlini are the most competitive,while O.sertatus is the least competitive.Effective control of E.onukii can be achieved by reasonably protecting and utilizing highly competitive spiders such as C.japonicola and C.reichlini.