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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。
From April to November in 2010, the investigation on arthropod community structure and its diversity in ecological rice fields in Yongfu County, Guilin, Guangxi Province showed that there were 169 species of arthropods in the field, belonging to 2 orders, 12 orders and 77 families. The richness index and dominance index of arthropod in the ecological paddy field were the highest in Hymenoptera, which were 4.295 4 and 0.235 0, respectively. The lowest and the lowest index of richness index was 0.102 2, respectively. The lowest was 0.010 9, and the community diversity index and evenness index were the highest in Diptera, accounting for 1.867 5,0.506 2 and 0.002 9,0.004 2, respectively; the lowest was the Odonata, 0.002 9 and 0.002 4, respectively. There are many predators in ecological paddy field, and the highest abundance index of Hymenoptera. Dynamic analysis of time showed that in the booting stage, the species of insect in ecological rice paddy was the highest with the highest abundance index.