摘要
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。
The spatial distribution type of Lissorhoptrus oryzophilus larva on rice roots was studied by IWAO regression model and Taylor power law based on field survey and parallel skipping sampling method.The population density of Lissorhoptrus oryzophilus larva in the rice seedling bed was higher than that in the transplanting field significantly.Lissorhoptrus oryzophilus larvae presented the aggregated distribution on rice plant roots in the rice seedling bed and transplanting field and distributed the middle area in the rice seedling bed and transplanting field mainly but larvae were mutually exclusive between individuals.The aggregated distribution was caused by the environmental factor.The aggregated distribution in the rice seedling bed with a high population density was also related to larva habit except for environmental factor.
出处
《西南农业学报》
CSCD
北大核心
2013年第3期1006-1008,共3页
Southwest China Journal of Agricultural Sciences
基金
贵州省科技计划项目"贵州稻水象甲防控技术研究与集成示范"[黔科合NY字(2010)3079]
贵州省植保植检站稻水象甲防控专项"稻水象甲生物学与防控技术研究"
贵州省农业科学院专项"稻水象甲调查及防控技术研究"[黔农科院院专项(2010)032]
关键词
稻水象甲
幼虫
水稻
空间分布型
Lissorhoptrus oryzophilus
Larva
Rice
Spatial distribution type
