稻水象甲传播扩散调查与实例分析

Research on and Case Analysis of Rice Water Weevil Spread and Diffusion

稻水象甲是我国检疫性水稻害虫,目前已经传入我国25个省市自治区,控制稻水象甲扩散是稻水象甲防控的重要工作方向。宁夏是2014年发现稻水象甲入侵的最新地区。通过对新传入稻水象甲的水稻种植区进行调查分析显示,稻水象甲的远距离扩散主要是借助交通工具携带的稻谷或稻草及其制品传播。入侵区域内的扩散与稻田的灌渠及排水系统没有确定的关系,田间不均匀分布显示稻水象甲的飞翔能力不是区域内扩散的主要原因。不同水稻种植区土壤对稻水象甲有一定的影响,宁夏稻区盐碱地区域的稻田至今未发现稻水象甲的危害。

Rice water weevil is a kind of quarantine pest in China, which has spread to 25 provinces since its first invasion. Rice water weevils＇ spreading area controlling is the most important working direction. Ningxia is a new invasion area since 2014. The investigation and analysis of rice water weevil invasion area showed that rice water weevil was spread to a long distance by rice stem and its products carried by vehicle. It was not necessarily that spread in invasion area was concerned with irrigation systems and drain ditch. Uninformed distribution in the rice field showed that rice water weevil＇s hover ability was not the main reason of its spread. Different soil types might influence rice water weevil, because rice water weevil was not found in the saline-alkali land area in Ningxia during investigation years.