文献类型： 会议论文
第一作者： LANG YANG
作者： LANG YANG 1 ; XIAO-CUI HUANG; YUE-LAN FANG; EN-HAI CHEN;
作者机构： 1.Guangxi Crop Genetic Improvement and Biotechnology Lab, Guangxi Academy of Agricultural Sciences, Manning, 530007
关键词： sugarcane;arthropod;community;diversity;index
会议名称： Technologies to improve sugar productivity in developing countries
主办单位：
页码： 397-399
摘要： Alms: This paper reports the current condition of arthropod species diversity at seedling stage of two kinds of sugarcane fields (plant cane fields and ratoon fields) in Nanning, Guangxi Province. Methods & Results: Arthropods were sampled once at 4thleaf stage, 6th leaf stage and 8th leaf stage from 5 plots respectively. Investigations were carried out from April to May, 2006. In analyzing the data, the Shannon-Wiener index, Simpson index, Brillouin index, species evenness and richness indices wereused to study the distributional trends of community structure, the distributional trends of species assemblages, dominant species and abundance of sugarcane field. A total of 15 species arthropod animals were obtained from sugarcane fields, of which belonged to 10 orders and 14 families. There were 8 species pest insects, 5 natural enemy insects and 2 spiders. There were difference in number of arthropods among 6 samples, the highest one was 80, recorded at 8th leaf stage of ratoon fields, and the lowest one was 25, recorded at 6th leaf stage of plant cane fields. There wasn't difference of Shannon-Wiener, Simpson index, Brillouin index, species evenness and richness indices between each sample. Significance of Study: It was revealed that the numberof species and its abundance have great effect on biodiversity, some environmental factors and human action such as cultivation and fertilization had great effect on biodiversity. In order to find out the best ways to protect farmland and control pests efficiently, the impact of human related activities on biodiversity of sugarcane field and farmland should be further studied.
分类号： TS24
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