作　　者： ; ; ; ; ;

机构地区： 西南大学植物保护学院

出　　处： 《西南大学学报（自然科学版）》 2010年第10期54-58,共5页

摘　　要： 采用定点系统调查的方法对豇豆田间生态系统中斑潜蝇及其天敌结构与动态进行了研究.结果表明:豇豆田间斑潜蝇及天敌复合生态系统中(complex ecosystem)昆虫种类有8种,优势种群为美洲斑潜蝇.在豇豆整个生育期,美洲斑潜蝇的种群数量呈上升趋势,而复合生态系统的多样性和均匀度呈下降趋势.经主成份分析表明对复合生态系统作用最大的是寄生蜂.对各时期复合程度的评价发现,前期的复合程度高,而后期的复合程度低. The structure and dynamics of Liriornyza and its natural enemies were investigated in a cowpea field, using the systematical methods of fixed spots. The results recorded 8 insect species in this complex ecosystem in the cowpea field. Among these species, Liriornyza sativae was the dominant species. Its population kept increasing throughout the growth period of cowpea while species diversity and evenness of the complex ecosystem decreased. The principal component analysis of the complex ecosystems showed that Liriomyza had the greatest influence on the ecosystem. The complex degree was shown to be higher in the earlier growth period of cowpea than in its later growth period.

关 键 词： 豇豆 斑潜蝇 天敌 复合生态系统 生态学

领　　域： [生物学]