中国水稻科学2012，Vol.26Issue(4)：457-466,10.DOI:10.3969/j.issn.1001-7216.2012.04.011
稻鸭共作系统中稻飞虱及主要捕食性天敌类群之间的关系
Relationship Among Rice Planthoppers and Main Predatory Arthropods in Rice-Duck Integrated Cultivation System
摘要
Abstract
Based on the ecological niche theory, the population compositions and dynamics, time niche of planthoppers and main predatory arthropods were investigated in three experimental treatment plots; chemical fertilizer utilization plot, rice-duck integrated cultivation plot and no chemical pesticides/fertilizer application plot, and grey relational grade analysis was conducted in the meanwhile. The results indicated that differences in individual numbers, temporal variation characteristics, temporal niche breadth and overlap index lot rice planthoppers and the main predatory arthropods varied to various degrees among the three treatment plots. The number of rice planthoppers in its peak stage as well as the total individual number of the main predatory arthropods decreased. Compared with the chemical fertilizer utilization plot and the control plot, the ratio of natural enemy to nee planthoppers in the rice-duck integrated cultivation plot decreased by 1. 72% and 26. 14%, respectively. Ecological niche breadths for predatory arthropods except Coccinellidae in the rice-duck integrated cultivation plot were 2. 14% - 35. 77% lower than those in the chemical fertilizer utilization plot, niche overlap indexes for most of the predatory arthropods, for instance, Tetragnathidae and Staphylinid, Araneidae and Coccinellidae increased concurrently. However, the number of the rice planthopper in the rice-duck integrated cultivation plot were 23. 70% lower than that in the chemical fertilizer utilization plot, owing to the greater effects of synchronization following performance and the enhanced pest controlling potentialities of Coccinellidae and Theridiidae, which were somewhat mitigated the influences caused by the reduction in the number of predatory arthropods and the weakened rice planthopper control capability. Grey correlation degrees between the main predatory arthropods and the rice planthopper in different rice cropping patterns or groups of predatory arthropods were differentiated. Coccinellidae, Lycosidae and Theridiidae had greater influences on rice planthopper in the rice-duck integrated cultivation plot.关键词
稻飞虱/捕食性天敌/稻鸭共作/生态位Key words
rice planthopper/ predatory arthropods/ rice-duck integrated cultivation/ ecological niche分类
农业科技引用本文复制引用
秦钟,章家恩,张锦,骆世明..稻鸭共作系统中稻飞虱及主要捕食性天敌类群之间的关系[J].中国水稻科学,2012,26(4):457-466,10.基金项目
国家自然科学基金资助项目(30800134,30770403) （30800134,30770403）
国家973计划资助项目(2006CB100206) （2006CB100206）
广东省科技计划资助项目(2007B020709007) （2007B020709007）
广东省现代农业产业技术体系资助项目(粤农[2009]380号). （粤农[2009]380号）
