首页> 中文期刊> 《中国农业科学》 >基于GIS的小麦-豌豆间作对麦长管蚜种群空间格局的影响

基于GIS的小麦-豌豆间作对麦长管蚜种群空间格局的影响

         

摘要

[Objective] In order to research the effect ofbiodiversity on spatial distribution ofSitobion avenae in wheat, the population density of S. avenae was investigated in wheat fields in Langfang Experimental Station of Institute of Plant Protection, Chinese Academy of Agricultural Sciences, using wheat intercropped with pea by different patterns, and the field cultivar monoculture of wheat was planted as control. [Method] Using the Geographical Information System (GIS) and the traditional analysis methods of spatial distribution, the Kriging-interpolation figures, aggregation indices, Iwao and Taylor's regression models were analyzed. [Result] The results showed that the spatial distribution of S. avenae was mainly aggregation distribution in intercropping patterns of wheat and pea, by the planting row of pea : wheat in 2 : 2, 2 : 4, 2 : 6, 2 : 8 and wheat monoculture, but the degrees of aggregation were different, 2 : 2 pattern > 2 : 6 pattern > 2 : 4 pattern > wheat monoculture > 2 : 8 pattern. Kriging-interpolation figures indicated that wheat aphids distributed mainly around the field during early stage, and spreaded to the middle of field gradually. There were many aggregation centers mostly at wheat monoculture and 2 : 2 patterns plots during aphid peak period. Compared with each intercropping field, there were higher population densities of aphid in field cultivar monocultures at the level of P2:6模式>2:4模式>小麦单作>2:8模式;由基于GIS的Kriging空间插值种群变化模拟图得知:起初麦长管蚜主要分布在麦田的周围,逐步向麦田中部扩散;在麦长管蚜发生的高峰期,形成了许多聚集中心,主要集中在小麦单作和2:2模式小区中,且小麦单作的蚜量极显著高于其它间作模式(P<0.01).[结论]麦田合理生物多样性可以有效控制麦长管蚜种群的增长,但并不能改变其种群格局的变化趋势.

著录项

  • 来源
    《中国农业科学》 |2009年第11期|3904-3913|共10页
  • 作者单位

    中国农业科学院植物保护研究所;

    植物病虫害生物学国家重点实验室;

    北京;

    100193;

    山东农业大学植物保护学院;

    山东泰安;

    271018;

    宁夏出入境检验检疫局;

    银川;

    750001;

    中国农业科学院植物保护研究所;

    植物病虫害生物学国家重点实验室;

    北京;

    100193;

    中国农业科学院植物保护研究所;

    植物病虫害生物学国家重点实验室;

    北京;

    100193;

    山东农业大学植物保护学院;

    山东泰安;

    271018;

    中国农业科学院植物保护研究所;

    植物病虫害生物学国家重点实验室;

    北京;

    100193;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 植物保护;
  • 关键词

    地理信息系统; 麦长管蚜; 空间分布; 生物多样性;

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