桃蛀螟对蓖麻的危害及其防治研究

Study on the Harm of Dichocrocis punctiferalis Guenee to Ricinus communis and Its Prevention

[目的]控制桃蛀野螟对蓖麻的为害。[方法]对桃蛀野螟在蓖麻上的危害习性和发生规律进行试验观察。[结果]结果表明，补充营养对成虫产卵量影响明显，尤其是越冬代成虫。幼虫蛀食蓖麻果实、籽粒及雌雄花蕾，其他部位不取食。7～11月是此虫在蓖麻上的为害期，防治方法有药剂喷雾及套袋。[结论]该研究为蓖麻桃蛀野螟的防治提供科学依据。

[ Objective ] The purpose was to control the harm of Dichocrocis punctiferalis Guenee to Ricinus communis L. [ Method ] The harm habit and recurrence regularity of Dichocrosis punctiferalis guenee to Ricinus communis L. were observed. [ Result] The results indicated that supplemental nutrition could greatly affect the adult fecundity, in particular, winter generation adult. Larvae would eat none other than the fruits of Ricinus communis L. , grains and male and female buds. The harm period was from July to November. The ways of prevention and cure were composed of medicament spray and bagging. [ Conclusion] This research will provide the scientific basis for prevention of Dichocrocis punctiferalis Guenee.