1969——1971年间,曾在江西奉新县罗坊公社兰田山区(海拔400——500公尺)对二化螟的发生情况,进行过一些观察,现就其与防治上有关的几个问题,概述如下:1、山区农业生产上要注意二化螟的防治工作 从这几年的观察情况来看,二化螟对山区水稻产量,会造成一定损失。特别是在发展双季稻的过程中,如双季稻的面积在当地所占比重尚小时,更要重视对于早稻田中二化螟一代防治工作。兰田大队的实践表明,当双 From 1969 to 1971, some observations were made on the occurrence of Chilo suppressalis in the mountainous area of ​​Lantian, Luofang commune, Fengxin County, Jiangxi Province (400 to 500 meters above sea level) The problems are summarized as follows: 1. Prevention and Control of Chilo suppressalis in Agricultural Production in Mountain Areas From the observation of past few years, Chilo suppressalis will cause some losses to the rice yield in mountainous areas. Especially in the process of developing double cropping rice, if the area of ​​double cropping rice is still small in the local area, more attention should be paid to the prevention and control of the second generation of stem borer in the early rice paddy field. Practice of the Lanta Brigade shows that when double