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据五峰县农业技术推广中心调查汇报,该县5月上中旬发生大面积森林害虫双箭尺蠖危害玉米等农作物灾情。尺蠖先在山上林间蚕食树叶,待树叶食光后,即转移到附近耕地里为害农作物幼苗,先食豆科,再食禾本科作物,最后食茄科,所到之处,受害严重的田块农作物幼苗几乎全部被吃光。为害高峰期每666.7m~2虫口密度达3500头。 初步统计,到5月下旬止,全县受灾面积涉及21个村333.3hm~2,受
According to Wufeng County Agricultural Technology Promotion Center survey report, the county in mid-May on a large area of forest pests double arrow ruler 蠖 endangered crops such as corn disaster. Ruler 蚕 first in the hills of forest eroded leaves, until the leaves after eating, that is transferred to the nearby cropland damage crop seedlings, prey beans, and then eat gramineous crops, the last food Solanaceae, wherever he went, severely affected fields Almost all of the crop seedlings are eaten. Victims peak every 666.7m ~ 2 insect population density reached 3500. According to preliminary statistics, by the end of May, the affected area in the whole county involved 333 villages in 21 villages, 333.3 hm 2