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负泥虫Lema oryzae kuwayama,山区农民叫背屎虫,是山区水稻早期害虫,历年发生普遍而严重。水稻受害后,轻者叶变枯白,生育迟滞,严重的时候全田大部叶片枯焦死亡。由于山区水稻生长期短,被害后另抽新叶,始形成幼穗,因此穗形较小,影响产量。58年三月中旬,我们汉中农校一部分师生下放黎坪锻练。访问该地乡长,他谈到了当地农业生产上三大災害——稻背屎虫、稻瘟病、马铃薯晚疫病——严重阻碍
Negative insect Lema oryzae kuwayama, mountain pests called back feces, is a mountainous rice early pests, common and serious over the years. After the damage of rice, the light leaves become white, fertility retardation, most of the time when most of the fields dead leaves dead focus. Due to the short growing season of rice in mountainous areas, new leaves were newly added after the victimization, and spikelets formed. Therefore, the spike shape was small, which affected the yield. In mid-March 58, a part of teachers and students from Hanzhong Agricultural School placed Li Ping in training. When he visited the mayor, he talked about the serious impediments to the three major disasters in local agricultural production - rice back feces, rice blast and potato late blight