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花椒害虫主要有花椒笮吉丁、柳干木蠹蛾和桔褐天牛等,以花椒窄吉丁为害最重。花椒窄吉丁一年一代,柳干木蠹蛾三年一代,均以幼虫越冬,在陕西各花椒产区均有分布,尤以秦岭以北最为严重;桔褐天牛两年一代,仍以幼虫越冬,分布在秦岭以南。秦岭以北15年左右的树主要有窄吉丁引起枯死,25年左右时枯死的却为木蠹蛾造成。4月中旬用增效氧化乐果、甲(?)磷50倍液或久效磷20倍液等进行涂抹防治,均可获得80%以上的杀虫效果;8月下旬用上述配方防治韧皮部小幼虫,效果尤为理想。
Pepper pests mainly pepper ji jidin, willow dry moth and orange peony, with narcissus narcissus narrow most damage. Pepper narrow Ji Ding a generation, three generations of Willow codling moth, all overwintering larvae, all pepper in Shaanxi producing areas are distributed, especially in the north of the Qinling most serious; brown peacock two generations, still with Larvae overwinter, distributed in the south of the Qinling Mountains. About 15 years north of the Qinling Mountains, trees are mainly caused by narrow Jidin dead, about 25 years when the dead but caused by the codling moths. In mid-April with the synergistic effect of omethoate, A (?) 50 times the phosphorus solution or monocrotophos 20 times and other smear control, can get more than 80% insecticidal effect; late August with the above formula to prevent phloem Larvae, the effect is particularly good.