Effects of two different planting patterns on insect herbivory pattern of Solanum nigrum L. leaves

Authors Hao Yanping; Wang Ding; Tian Xvping

Journal Journal of Environmental Entomology , 2016,6:38

Abstract The study of the relationship between insects and vegetation, contributes to a better understanding of the relationship between the structure and function of ecosystems as well as the mechanism of biological diversity maintenance. In this paper,through the investigation and analysis on insect herbivory patterns under centralized planting and block planting two kinds of different planting patterns of Solanum nigrum,in order to provide the theoretical foundation and technical advice for cultivation and maintenance of S. nigrum. The result showed that 11 insect herbivory patterns were found. There were 10 in centralized planting plots and 11 in Block planting plots. The frequency of each herbivory pattern varied from 0.4% - 24.7%. Numbers and Shannon-winner index and Pielou index of insect herbivory pattern in centralized planting plots were lower than that in block planting plots. The frequency of S. nigrum leaves by insect herbivory was higher in block planting plots than in centralized planting plots,but the degree of injury of S. nigrum leaves in centralized planting plots was significantly higher than in block planting plots. So cultivation of S. nigrum should avoid large-scale centralized planting mode. The core issue of the future research should be the relationship of scale and strength of edge effect between different ecosystem boundaries.

Species covered 龙葵(变种) Solanum nigrum