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为弄清稻水象甲(Lissorhoptrus oryzophilus)幼虫在水稻田间的分布情况,采用全田调查和平行跳跃式取样法,运用Iwao回归模型和Taylor幂法则,研究了稻水象甲幼虫在水稻根部空间的分布型。结果表明:稻水象甲幼虫在秧田返栽田虫口密度显著高于移栽田,幼虫在秧田返栽田和移栽田水稻植株根部均呈聚集分布,主要分布在田块的中部区域,但个体间相互排斥,聚集原因系环境因素造成,秧田返栽田密度较高田块的聚集原因除与环境因素有关外,还与稻水象甲幼虫的习性有关。
In order to understand the distribution of larvae of Lissorhoptrus oryzophilus in paddy field, we investigated the distribution of larvae of Lissorhoptrus oryzophilus in the rice root space by using the field survey and parallel jump sampling method, the Iwao regression model and Taylor’s power law, Distribution. The results showed that the population density of M. asiatus larvae returning to the transplanting field was significantly higher than that of the transplanting fields, and the larvae were clustered in the roots of transplanted and transplanted rice plants in the seedling field and mainly distributed in the central area of the transplanting paddy field Mutual exclusion between individuals, the reasons for the accumulation of environmental factors caused by the Department of Transplanting seedling field planting density higher fields in addition to factors related to environmental factors, but also with the habit of rice water weevil larvae.