十字花科蔬菜昆虫群落的组成及动态

通过田间观察、室内饲养和鉴别等方法，利用 １９９５ 年９ 月至１９９７ 年３ 月在福州市郊区和福建农业大学的调查资料，研究十字花科蔬菜昆虫群落的种类组成、生境分化和时间动态．共记载昆虫５８ 种（类），其中植食性昆虫３９ 种（类），占昆虫６７．２４％ ；肉食性昆虫 １９ 种（类），占３２．７６％ ．发现昆虫群落的结构及 Ｓｉｍ ｐｓｏｎ 优势集中性指数与蔬菜种类、生境条件及生育期等有关．

Structure and dynamics of insect communities in crucifer

The experiments and observations were carried out in the crucifer fields in Fuzhou suburb and a laboratory in Fujian Agricultural University from September, 1995 to March, 1997. In this paper, the number of species and individuals, spatial structure and seasonal dynamics of the insect communities in crucifer were dealt with. The numbers of species and individuals, the Simpson′s index values of dominant concentration of the insect communities fluctuated with the different habitats, species and growing stages of crucifer, etc. Fifty eight species of insects were found, of which there were 39 species of herbiworus insects, 18 species of carnivorus insects.