浙北单季晚(粳)稻区稻飞虱发生特点与原因探讨
Occurrence of rice planthoppers in singlecropping of rice fields in northern part of Zhejiang Province.
潘欣葆
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作者单位：浙江省湖州市病虫测报站,湖州313000
中文关键词：单季晚(粳)稻;稻飞虱;发生特点;原因分析
英文关键词：single cropping of rice; rice planthoppers; occurrence characteristics; its causes
中文摘要：近年来 ,浙北单季晚 (粳 )稻区稻飞虱发生特点为 ,以白背飞虱Sogatellafurcifera (Horvath)和Nilaparvatalugens (St?l)褐飞虱为优势种群 ;发生代次多 ,主害代为 3代白背飞虱和 5代褐飞虱 ,少数年份 4代褐飞虱也成为主害代 ;发生偏重 ,但地区和田块间不平衡性突
英文摘要：Rice planthoppers in single cropping of rice area in northern part of Zhejiang Province include mostly Sogatella furcifera(Horvath) and Nilaparvata lugens (St?l). Many generations occure in one year.The main damaging generations are the