【摘要】 通过2010年4~11月对广西桂林永福县生态稻田节肢动物群落结构及其多样性调查研究表明,田间节肢动物共169种,分属于2纲,12目,77科。生态稻田田间节肢动物的丰富度指数和优势度指数都是膜翅目最高,分别为4.295 4、0.235 0,丰富度指数以蜻蜒目的最低,为0.102 2;优势度指数蜻蜓目和脉翅目最低,均为0.010 9;群落多样性指数和均匀度指数都以双翅目昆虫最高,分别为1.867 5、0.506 2和0.002 9、0.004 2;蜻蜒目最低,分别为0.002 9和0.002 4。生态稻田天敌数量多,以膜翅目丰富度指数最高。时间动态分析表明,孕穗期生态稻田昆虫种类最多,丰富度指数最高。更多还原

【Abstract】 Based on the investigation of arthropods community structure and diversity in ecological rice paddy fields in Yongfu county,Guilin city of Guangxi from March to November in 2010,169 species of arthropods belonged to 2 classes,12 orders and 77 families were discovered in the fields.The diversity and uniformity index of Diptera,and richness and dominance index of Hymenoptera were highest.There were abundant natural enemy of insects in ecological rice paddy fields,richness index of Hymenoptera were highest.And dynamic analysis showed there were biggest quantity and richest species of insects in booting stage,which indicated that booting stage was a crucial period of natural enemy for pest controlling in ecological rice paddy fields.更多还原