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杨蚜(Chaitophorus SP)是毛白杨苗木常发性害虫。常群集叶背,直接刺吸叶液危害苗木,并易诱发煤污病,使苗木叶茎变黑,妨碍光合作用,影响苗木生长。严重时,造成苗木部分或全部叶片脱落,致使苗木死亡。 过去,防治杨蚜多使用有机氯和有机磷杀虫剂。因长期使用,杨蚜抗性增强,防治效果下降。为探索防治杨蚜新的农药品种及防治办法,我们于1983年在本场进行了呋喃丹防治杨蚜试验。今将试验结果整理如下:
Aphis gossypii (Chaitophorus sp) is a common pest of Populus tomentosa seedlings. Often clustered leaf back, directly thorn sucking leaf juice endanger seedlings, and easy to induce coal pollution, darken the seedling leaves, hinder the photosynthesis, affecting seedling growth. Serious, resulting in some or all of the leaves off the seedlings, resulting in seedlings died. In the past, the use of organic chlorpyrifos and organophosphate pesticides to prevent and control more aphids. Due to long-term use, young aphids increased resistance, control effect decreased. In order to explore the prevention and control of the new pesticide variety and control measures, we conducted a pilot test of carbofuran against Aphis gossypii in this field in 1983. Now the test results are organized as follows: