关键词: 糯玉米, 糯玉米, 亚洲玉米螟, 发生规律, 危害特点

Abstract:

In order to study the relationship of species in Tsuga tchekiangensis community, and preserve the plant effectively, by using variance ratio (VR) and interspecific Jaccard, interspecific Dice, Pearson correlation coefficient, Spearman’s rank correlation coefficient, the relationship between species in Tsuga tchekiangensis community in Mangshan mountain nature reserve was conducted. The results showed that: (1) there was a positive correlation among main populations in general in Tsuga tchekiangensis community; (2) The interspecific association was at a little significant level, only including 2 pairs of species of interspecific association were positive significant, 4 pairs of species of interspecific association were negative significant, 1 pair of species of interspecific association was highly positive (negative) significant respectively. Correlation coefficient between Tsuga tchekiangensis and Tetracentron sinense was negative significant, and highly negative significant between Tsuga tchekiangensis and Cinnamomum camphora; (3) Among most pairs of species there was a low association degree, meanwhile, few pairs of species were extremely exclusive to each other, which indicated that Tsuga tchekiangensis community was mature at present. Combined with many methods, it was more effectively to look for potential correlation relationship among species in studying the relationship between species. Finally, the article proposed the protective measures for the rare and endanged plants.