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不同农业景观能够影响生态系统生物控害与授粉的服务与功能,但同时也可能影响害虫的种群密度。为了探明江西赣北地区不同农业景观背景下油菜潜叶蝇种群动态,应用广义线性模型分析了农业景观构成因子与油菜潜叶蝇种群数量的关系。结果表明:油菜初花期、盛花期和终花前期,不同样地之间油菜潜叶蝇种群发生趋势相似,在油菜盛花期潜叶蝇为害最重,但不同样地之间的潜叶蝇种群数量差异显著。区域范围农业景观构成因素对油菜花期潜叶蝇发生数量有显著影响。草地面积、森林面积与油菜潜叶蝇的种群数量呈显著正相关关系,耕地面积在中等范围尺度(1 000m半径)与油菜潜叶蝇发生数量负相关。研究结果表明高比例的作物生境反而有相对更低的油菜潜叶蝇种群。本研究内容可以为分析农业景观的生态服务功能提供研究案例,为不同生态农业区域油菜潜叶蝇种群防控提供参考资料。
Different agricultural landscapes can affect the services and functions of ecosystem biological control and pollination, but at the same time may affect the pest population density. In order to explore the population dynamics of the leafminer mites in the different agricultural landscapes in the north of Jiangxi Province, the relationship between agricultural landscape composition factors and the population of the mullet leafminer was analyzed by the generalized linear model. The results showed that the trend of rapeseed population was similar at the beginning of flowering stage, full flowering stage and early flowering stage and between different plots, while the leaf miner was the worst in full flowering rapeseed stage, but the leaf miner population The number of significant differences. Regional agricultural landscape factors have a significant impact on the number of leaf rape blight occurrence. There was a significant positive correlation between grassland area and forest area and the population of rape leaf miner. The area of cultivated land was negatively correlated with the occurrence of rameleaf leaf miner in the middle scale (1 000 m radius). The results show that a high proportion of crop habitats, on the contrary, have a relatively lower population of B. rapa leaf miner. The contents of this study can provide a research case for analyzing the ecological service functions of agricultural landscape and provide reference materials for the population control of rametship mites in different ecological agricultural regions.