南充市主要粮油作物重大病虫害发生流行及灾变规律研究

摘要

The paper analyzed the occurrence popular rule which the Nanchong city the wheat stripe rust (Puccinia stfiirormis),the paddy rice blast(Pyricularia oryzae),the rice planthopper (Nilaparvata lugens) and the rape sclerotinia stem rot[Sclerotinia sclerotiorum(Lib)de Bary],the disease-carrying insect has the relevance,has discovered the influence significant disease-carrying insect reproduction decision factor,ap-praised the main disease-carrying insect to have the harm situation,the cataclysm rule and the risk.%分析了南充市小麦条锈病、水稻稻瘟病、稻飞虱和油菜菌核病的发生流行规律，病虫发生相关性，找出了影响重大病虫重发的决定因子，评价了主要病虫发生危害情况、灾变规律和风险。