清远麻竹笋沟金针虫生物学特性及其土壤空间分布

为探讨水稻主栽品种病虫侵害风险和综合抗性，采用田间多点自然诱发法对杭州地区11 个水稻主栽品种的主要病虫害抗性进行综合评价。结果表明，应用多目标综合评价和决策方法，对田间主要病虫的综合抗性强弱排序为：‘甬优538’>‘甬优12 号’>‘秀水134’>‘甬优15 号’>‘浙优18 号’>‘丰两优香１号’>‘甬优8 号’>‘甬优9 号’>‘中浙优1 号’>‘中浙优8 号’>‘天优华占’，表现为高抗、中抗的品种分别为4 个、5 个，中感、高感各1 个；2 个试验点在褐飞虱、白背飞虱、稻纵卷叶螟、纹枯病等当年田间发生量大的病虫抗性分析结果较一致，而零星发生的病虫上表现的抗感程度有差异。经多目标决策法分辨各目标性质并作相应变换，两地各品种的总体抗性评价排序较一致，父本亲缘关系相近的水稻品种具有相近的综合抗性。根据品种结构与抗性变化制定综合防治策略，可为不同品种布局下的病虫害监测预警和防控提供依据。

Integrative Evaluation on the Resistance and Invasion Risk of Pests and Diseases Among Main Rice Varieties

In order to improve P. elegans production in Qingyuan, Pleonomus canaliculatus in Qingyuandamage were investigated, and its biological characteristics were described. The survey found Pleonomuscanaliculatus was the main pest of P. elegans out shoot in Qingyuan area. According to wireworm larvae in P.elegans the spatial distribution of soil showed that： the distribution of larger wireworms in P. elegans in soilmainly aggregated distribution. In view of wireworm harm shoots than in previous reports had a tendency toexpand, in bamboo transplanting, soil improvement to be considered.