Occurrence of rice planthoppers in singlecropping of rice fields in northern part of Zhejiang Province.
Author of the article:PAN Xin-Bao
Author's Workplace：(Forecasting Station of Plant Diseases and Insect Pests of Huzhou City, Zhejiang Province Huzhou 313000, China).
Key Words：single cropping of rice; rice planthoppers; occurrence characteristics; its causes
Abstract：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