稻纵卷叶螟在我省原是间歇性局部猖獗为害的害虫,自1965年后为害加重,至1967年开始全省普遍严重发生,此后除1971年由于干旱,为害有所减轻外,每年都在局部地区造成严重为害,成为水稻上的主要常发性害虫,特别是1973年是此虫的特大发生年,其发生量之大,受害面之广,威胁之重是历史上少见的。其为害程度,接近甚至超过螟虫。现将稻纵卷叶螟的发生和防治技术总结如下: 一、发生特点 1973年稻纵卷叶螟发生特点是发生期早,发生量大,盛发期长,多高峰,为害面 The Chinese rice leaf roller is a pest that is intermittently rampant in our province. It has been aggravated since 1965 and has been widespread in the province since 1967. Except for the drought and damage alleviated in 1971, Causing serious damage in some areas and becoming the main pests on rice. Especially 1973 was the special year for this pest. The occurrence of such pests was large, with a wide range of victims and unprecedented threats. Its degree of harm, close to or even exceed stem borers. Now the occurrence of rice leaf roller and its prevention and control technology are summarized as follows: First, the occurrence characteristics of the occurrence of rice leaf roller in 1973 characteristics occur early, the occurrence of large, long hair peak, multi-peak damage surface