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稻纵卷叶螟是为害水稻的一种重要害虫,一九六四年以来在我省有发展趋势。因此,研究稻纵卷叶螟的发生规律,抓住具体地区的发生特点采取有效防治措施,对夺取水稻高产有现实意义。现将我们掌握的部分有关资料整理如下,供参考。一、发生代数我省位于北纬二十三至二十九度间,地处我国东南沿海,农田的海拔分布和耕作环境比较复杂,不同地区的气候变化较大,因此稻纵卷叶螟每年的发生代数在地区之间变化很大。
Rice leaf roller is an important pest damage to rice, since 1964 in our province there is a trend. Therefore, the study of the occurrence of rice leaf roller, catch the occurrence of specific areas to take effective measures to control, to capture high-yielding rice has practical significance. Now we have some of the relevant information compiled as follows for reference. First, the occurrence of algebra Located in the province between 23 degrees north latitude and 29 degrees, located in China’s southeast coast, farmland altitude distribution and farming environment is more complex, climate change in different regions larger, so the annual rice leaf roller The occurrence of algebra varies greatly between regions.