摘要
【目的】开展稻水象甲卵巢发育、扩散能力和防治药剂的筛选研究,为云南稻水象甲的防治提供依据。【方法】对成虫采用卵巢解剖法,确定卵巢的发育进度和产卵期;采用田间系统调查法和染色法明确扩散范围;采用浸叶法对常用杀虫剂进行室内筛选。【结果】2009年4月下旬至5月上旬秧苗期,稻水象甲Ⅱ级卵巢达100%,Ⅲ级卵巢的平均抱卵量为8粒·头^(-1),最大抱卵量为23粒·头^(-1)。秧田返栽田的幼虫、成虫虫口密度明显高于大田,秧田返栽田的幼虫虫量是大田的4.82倍,第一代成虫是大田的6.50倍。烯啶虫胺、毒死蜱、辛硫磷、三唑磷、锐劲特对稻水象甲成虫防效在96.11%以上。【结论】滇中稻水象甲自然传播的范围小,随稻秧移栽是稻水象甲的主要传播方式,秧苗揭膜1周后至移栽前是化学防治的关键期,建议选用烯啶虫胺、辛硫磷、三唑磷、锐劲特在此期间开展田间防控。
【Aim】 The ovarian development, diffusion ability and pestcide selection of rice water weevil ( Lissorhoptrus oryzophilus Kuschel) were studied to provide guidance for the prevention and control of the pest in Yunnan Province.【Method】 The ovarian development of rice water weevil was determined by analysis of the ovarian anatomy of female adult. To determine the range of dispersal of females, we used field surveys and marked release and capture method. Finally, insecticide effectiveness against weevil was screened by using leaf immersion method in laboratory.【Result】 From late April to early May 2009 at seedling stage, 100% rice water weevil at ovarian Ⅱ level was arrived. The average number of ovaries eggs at level Ⅲ and the maximum number of eggs laid were 8 grain·head -1 and 23 grain·head -1 , respectively. Compared to rice seedling fields, the population density of larvae and adults of rice water weevil in replanted fields was higher. The number of returning larvae increased 4.82 times and the first generation of adults by 6.50 times. The control effects of the insecticides nitenpyram, chlorpyrifos, phoxim, triazophos and regent were effective at 96.11% against rice water weevil adults.【Conclusion】 Rice water weevil in central Yunnan has a small natural transmission range and transplanting rice seedlings is the main mode of transmission. We recommend that spraying of insecticides such as nitenpyram, phoxim, triazophos and regent should be done at the critical period a week after removing the plastic film of rice seedlings.
作者
尹艳琼
赵雪晴
李向永
陈福寿
王燕
张红梅
谌爱东
YIN Yanqiong;ZHAO Xueqing;LI Xiangyong;CHEN Fushou;WANG Yan;ZHANG Hongmei;CHEN Aidong(Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences;Crop Pest Science Observation Station of Department of Griculture in Yunnan, Kunming, Yunnan 650205, China)
出处
《生物安全学报》
CSCD
2019年第1期7-12,共6页
Journal of biosafety
基金
科技部国际合作项目(2011DFB30040)
云南省科技计划项目(2014IA009)
云南省现代农业水稻产业技术体系
关键词
稻水象甲
卵巢发育
扩散能力
药剂筛选
Lissorhoptrus oryzophilus
ovarian development
diepersal capacity
pestcide selection
