中国生物防治学报2024，Vol.40Issue(1)：99-107,9.DOI:10.16409/j.cnki.2095-039x.2023.01.054
苜蓿草田间作功能植物对苜蓿蓟马及天敌小花蝽种群的影响
Effects of Intercropping Alfalfa and Functional Plants on Population of Thrips and Their Natural Enemies Orius similis
摘要
Abstract
Referring to the push-pull theory and biodiversity protection strategy,the ecological regulation technology targeting alfalfa thrips was studied through field systematic monitoring of arthropods in fields intercropped alfalfa with different functional plants,such as Lotus corniculatus,Onobrychis viciifolia,Trifolium repens,Coronilla varia,and Tanacetum cinerariifolium in different proportions.The results showed that the population size of thrips and natural enemies Orius similis in alfalfa fields before harvest was significantly higher than that in corresponding intercropping functional plant areas.One week after mowing,the population density of O.similis in the alfalfa fields intercropped with L.corniculatus,O.viciifolia,T.repens,and T.cinerariifolium decreased significantly,while the density of O.similis in the corresponding functional plant area increased significantly.The density of O.similis in the three functional plant areas of L.corniculatus,O.viciifolia and T.repens increased from 3.67,3.00,and 3.67 insects/10 double nets before cutting to 11.50,29.17,and 15.00 insects/10 double nets at one week after mowing,respectively,which represented increases of 3.13 times,9.73 times and 4.09 times,respectively.Thrips population density in alfalfa field decreased significantly,corresponding to different changes in thrips density in different functional plant areas,and increased significantly in L.corniculatus and T.repens,but there was no significant difference between other areas and before mowing.At 2 weeks after cutting,the population density of thrips increased significantly with the regeneration of alfalfa,the density of O.similis in each functional plant area decreased significantly but increased significantly in the alfalfa fields.At 3-4 weeks after cutting,the density of O.similis decreased significantly with the decline of thrips population density in alfalfa fields,and the population density of O.similis and thrips in different functional plant areas did not change significantly.The strength of regulation effect of alfalfa intercropping with 5 functional plants at a ratio of 4:1 on thrips ranks from high to low:T.repens,T.cinerariifolium,O.viciifolia,L.corniculatus,C.varia.The study serves as a reference for protecting the natural enemies of alfalfa field ecosystem to provide ecological service.关键词
苜蓿草田/功能植物/间作/蓟马/小花蝽/生态调控Key words
alfalfa field/functional plant/intercropping/thrips/Orius similis/ecological regulation分类
植物保护学引用本文复制引用
魏淑花,刘学琴,王颖,刘畅,张蓉..苜蓿草田间作功能植物对苜蓿蓟马及天敌小花蝽种群的影响[J].中国生物防治学报,2024,40(1):99-107,9.基金项目
农业高质量发展和生态保护科技创新示范课题(NGSB-2021-15-04) （NGSB-2021-15-04）
国家牧草产业技术体系-盐池综合试验站(CARS-34) （CARS-34）
