作　　者： ; ; ;

机构地区： 华南农业大学资源环境学院

出　　处： 《生态学杂志》 2011年第2期281-289,共9页

摘　　要： 为了探明不同稻菜邻作模式对稻区内主要害虫及其捕食性天敌的影响,对水稻-白瓜、水稻-番茄、水稻-玉米、水稻-苋菜、水稻-菜心和水稻-菠菜等6种稻菜邻作模式下稻区内稻纵卷叶螟、稻飞虱及食虫沟瘤蛛、拟水狼蛛、拟环纹狼蛛、蛸蟏和稻红瓢虫的发生动态及其种群消长规律进行了研究。结果表明:6种稻菜邻作模式均可以显著降低稻纵卷叶螟和稻飞虱数量;早稻生长期,水稻与白瓜和番茄邻作模式下,稻纵卷叶螟蛾量、虫卵量和稻飞虱数量最大降幅分别达84.3%、38.9%和24.3%;晚稻生长期,水稻与苋菜和菜心邻作模式下,稻纵卷叶螟蛾量、虫卵量和稻飞虱数量最大降幅分别达79.5%、49.8%和13.4%;水稻-白瓜和水稻-菜心邻作模式还可以显著增加捕食性天敌数量。因此,水稻-白瓜和水稻-菜心邻作模式最能发挥稻田控害保益功能。 A field experiment was conducted to study the effects of mosaic arrangement of paddy rice neighboring with white melon,tomato,corn,amaranth,flowering Chinese cabbage,and spinach on the population dynamics of Cnaphalocrocis medinalis,plant hopper,and their predatory enemies. All the six mosaic arrangements decreased the abundance of C. medinalis and plant hopper significantly,compared with the control （paddy rice neighboring with fallow）. In early rice growth season,the abundance of C. medinalis adults,larvae and eggs,and of plant hopper under the arrangement of paddy rice neighboring with white melon and tomato had the largest decrement,being 84.3%,38.9%,and 24.3%,respectively; in late rice growth season,the largest decrement of the abundance under the arrangement of paddy rice neighboring with amaranth and flowering Chinese cabbage was 79.5%,49.8% and 13.4%,respectively. Paddy rice neighboring with white melon and flowering Chinese cabbage also had a significant effect on the increase of the abundance of predatory enemies. Therefore,planting paddy rice neighboring with white melon and flowering Chinese cabbage could have the best effect in insect pest control and predatory enemies＇ conservation.

关 键 词： 水稻 蔬菜 作物布局 种群动态

领　　域： [生物学]