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水稻象鼻虫是我区为害旱播秧苗严重的害虫之一,各县均有发生,尤以曲江、英德、从化、乳源、韶关等县较为普遍。据群众反映此虫有很久历史,不过以往早造旱播育秧很少,因此为害也不甚突出,但自1955—1956年来,技术改革进展很快,水播改旱播全区占40％,但播后受此虫为害严重的达50％,从化县旂杆乡有80亩秧苗被食去一半,英德县大镇区前进社的2000斤谷种,其中有200斤谷种也被食去一半,乳源县检查每平方尺秧苗中有20多个,其余各县赤普遍发生为害,严重威胁水稻增产。 此虫性喜晝伏夜出,每年约有二代。第一代成虫在清明至谷雨之间,群集秧苗叶鞘之处,
Rice weevil is one of the most serious insect pests in our district which is affected by dry planting seedlings. All counties have occurred, especially in Qujiang, Yingde, Conghua, Ruyuan and Shaoguan counties. According to the masses, this worm has a long history. However, in the past, the number of dry-planting seedlings was as low as in the past, so the damage was not conspicuous. However, from 1955 to 1956, the technical reform progressed rapidly, with 40% But after sowing by the insect serious damage up to 50%, Conghua County Flagstaff Township 80 acres of seedlings were eaten half, the town of Yingde County, advanced 2000 kg of grain, of which 200 kg of grain is also eaten Half went to the Ruyuan County to check more than 20 per square foot of seedlings, the rest of the county red universal damage, a serious threat to rice yield. This worm sex night at night, about two generations each year. The first generation of adults in the Ching Ming to Valley rain between the cluster seedling sheath,