Occurrence regularity of Prodeinia litura and a new forecast method.
Author of the article:CHEN Ting-Hua,CHEN Cai-Xia,JIANG Kai-Jie et al
Author's Workplace：(Plant Protect Station of Cixi City,Zhejiang Province 310000,China).
Key Words：Prodenia litura(Fabricius);occurrence regularity;sex hormone;forecast
Abstract：Prodenia litura(Fabricius)is the main insect which destroys vegetables and beans in Cixi City.It has occurred on a large scale for five times since 1990s.One reason of this is that the planted area of the plants such as beans and vegetables has ris