摘要
作物生态系统中,节肢动物形成比较完整的群落结构,对节肢动物群落的调查研究不仅是有害生物综合管理的基础工作之一,而且也是有害生物综合管理技术推广应用的前提与效果评价的一个侧面.根据对不同类型生境稻田节肢动物群落的调查材料,讨论节肢动物群落的季节性动态及这种动态的异同性。由结果可见:①在物种及各类群的数量比例等方面,以大八镇山区稻田占优势,特别是天敌类群更为明显,在同一生境内,以植食性昆虫数量较多,而捕食性昆虫数量较少。②随着水稻生长发育,物种丰富度上升,大八镇山区稻田丰富度取值较大。③随水稻生长发育,多样性指数取值上升,取值均以大八镇山区稻田为高。但不同稻田蜘蛛多样性指数动态比较接近。④随着水稻的生长发育,均匀性明显下降。
In crop ecosystem an integrated communities is consisted of insects and spiders,al-tho ugh the other species decreased remarkably compared with the natural ecosystem.The investigatio ns o f the composition and dynamics of arthro pod co mmunity werenot only the basic works in the integrated pest management,but also the metho ds toevaluate the effectiveness o f the teachniques used in the integrated pest management,and the base for the popularization and the use of the theories and teachiniques inthe new habitats. By the data collected from different habitats,the dynanlics and itssimilarity of arthro pod communities were discussed in this paper.The result showedthat :① It was the riee field in mountain area that were do minant in the species andthe individuals compositions.In the same habitat the phyto phagus group was thedonllnant.②With the rice growing,the species abundance and diversity increased,butthe community eveness decreased From the view point of the values of every indieestheco mmunities in the riee field in mo untain area had the highest,and the differenceof the spider groups among different habitats was very linlited.
出处
《华南农业大学学报》
CAS
CSCD
1996年第1期25-30,共6页
Journal of South China Agricultural University