论文部分内容阅读
稻纵卷叶螟是水稻重要害虫之一。它的发生有一个特点,即有时蛾多虫少,有时蛾少虫多,暴发原因,有待探讨。一九七三年三月,全国主要农作物病虫预测预报座谈会制定的《主要农作物病虫预测预报办法》规定的防治标准,认为凡是每亩有蛾500只左右,可定为防治对象田。上述办法虽提到稻纵卷叶螟的发生与气候、水稻栽培和天敌等因素有密切关系,但对这方面的关系没有具体说明。本研究于一九七四年在福建省浦城县农业科农校站对稻纵卷叶螟进行解剖,认识到气候
Rice leaf roller is one of the important rice pests. Its occurrence has a characteristic, that is sometimes moths and insects, and sometimes moths less bursts, the reasons for the outbreak to be explored. In March 1973, the prevention and control standard stipulated in the Measures for Prediction and Prediction of Main Crop Diseases and Pests formulated by the Symposium on Prediction and Prediction of Main Crop Diseases in the People’s Republic of China held that whenever there are about 500 moths per mu, it can be designated as a control target field. Although the above mentioned methods are concerned with the occurrence of rice leaf roller and climate, rice cultivation and natural enemies and other factors are closely related, but there is no specific description of this relationship. This study was conducted in 1974 in Pucheng County, Fujian Province Agricultural College Station for dissecting the rice leaf roller, recognizing the climate