论文部分内容阅读
研究表明:一年之中,桃瘤头蚜发生12~14代。各代平均发育期:干母17天,干雌12天,春季迁移蚜15天,性母22天,性蚜27天。秋季从夏寄主迁返桃树的有翅蚜即为性母,在桃树上产雌雄性蚜,支配产卵越冬。桃瘤头蚜最适温度范围为15~23℃。营养条件是影响桃瘤头蚜田间数量及分化的关键因素。在防治方法方面,测定了6种药剂治蚜的药效,以氧化乐果和甲甲磷为好;防治桃瘤头蚜应采用综合措施,控制桃瘤头蚜于卷叶之前。
Studies have shown that: in the year, peach aphids occurred 12 to 14 generations. The average developmental period of each generation: dry mother 17 days, dry female 12 days, 15 days aphid migratory in spring, mother 22 days, 27 days aphid. The winged aphid that returns to the peach tree from the summer host in autumn is the female parent, and the male and female aphids are produced on the peach tree, which governs the laying of eggs and wintering. Peach aphid optimum temperature range of 15 ~ 23 ℃. Nutritional conditions are the key factors affecting the number and differentiation of peach aphids in the field. In the aspect of prevention and treatment, the efficacy of 6 kinds of medicaments for treating aphids was determined, and the omethoate and methyidrol were better; the pest control peach aphid should adopt comprehensive measures to control the peach aphid before the leaf curl.