中国生态农业学报2012，Vol.20Issue(2)：236-241,6.DOI:10.3724/SP.J.1011.2012.00236
设施条件下青菜间作大豆或芋艿控制斜纹夜蛾效果及对捕食性天敌多样性的影响
Effect of Brassica chinensis intercropping with Glycine max or Colocasia esculenta on Spodoptera litura and natural enemy predatory diversity in protected vegetable fields
摘要
Abstract
Appropriate intercropping systems could promote crop yield and quality, alleviate disease and insect pest damages, enhance multiple crop index and facilitate efficient utilization of sunlight, heat, water, air, fertilizer, etc. An experiment was therefore conducted in a protected horticulture park in Pudong District, Shanghai Municipality (with location coordinates of 121.70°E, 31.19°N) to determine the effects of intercropped host plants [soybeans (Glycine max) and taros (Colocasia esculenla)] in Brassica chinensis field on Spodoptera litura vegetable insect-pest and structural characteristics of natural predatory enemies. Protected vegetable fields with row-intercropped soybeans or taros were the main treatments and protected mono-cultured B. Chinensis field was the control (CK) in the experiment. Trapped individual larvae and eggs in soybeans and taros were counted and natural predatory enemy community structure characteristics systematical analyzed. The results indicated that during the July-to-September investigation period, 100 plants of soybeans and taros trapped 1 098.84±107.50 and 1 260.78±126.16 larvae, respectively. 100 plants of soybeans and taros also trapped 17.45±1.31 and 20.76±1.81 individual eggs, respectively. Compared with CK, S. Litura population in protected vegetable fields with intercropped soybeans and taros decreased by 37.83% and 45.89%, respectively. There were 31 natural predatory enemy species belonging to 21 families and 5 orders in protected vegetable fields with intercropped soybeans. Also 32 natural predatory enemy species belonging to 21 families and 5 orders were in protected vegetable fields with intercropped taros. The CK fields had 26 natural predatory enemy species belonging to 19 families and S orders. The dominant natural predatory enemy species were Lycosa pseudoamulata and Erigonidium graminicolum in CK fields and L. Pseudoamulata, E. Graminicolum and Pirata subpiraticus in protected vegetable fields with intercropped soybeans and taros. The individual number per-100-plant, richness and diversity index of natural predatory enemies in protected vegetable fields with intercropped soybeans were 91.22±4.91, 29.74±0.30 and 4.53±0.03, respectively, representing increases of 58.70%, 25.27% and 10.60% over CK. Also the individual number per-100-plant, richness and diversity index of natural predatory enemies in protected vegetable fields with intercropped taros were 92.09±5.03,29.96±0.35 and 4.54±0.03, respectively, representing increases of 60.21%, 26.19% and 11.00% over CK. Based on the study, vegetable intercropping with soybeans or taros was a potential mode of controlling S. Litura and facilitating the effect of natural predatory enemies on insect pests. These intercropping systems were not only beneficial to arthropod community diversity and stability, but were also an environmental friendly agro-ecosystem.关键词
设施菜田/间作/斜纹夜蛾/捕食性天敌/优势种/多样性/丰富度/青菜/大豆/芋艿Key words
Facilities vegetable/Intercropping/Spodoptera litura/Natural predatory enemy/Dominant species/Diversity/Richness/Brassica chinensis L./Soybean (Glycine max L.)/Taro (Colocasia esculenta L.)分类
生物科学引用本文复制引用
万年峰,蒋杰贤,季香云..设施条件下青菜间作大豆或芋艿控制斜纹夜蛾效果及对捕食性天敌多样性的影响[J].中国生态农业学报,2012,20(2):236-241,6.基金项目
国家科技支撑计划项目(2010BAK69B 18)、上海市重大科技攻关项目(08DZ 1900401,08DZ 1900402)、上海市科技兴农重大项目[沪农科重字(2010)第4-1号]和上海市科技攻关专项(10DZ1960100)资助 （2010BAK69B 18）
