不同施药方式对番茄温室粉虱防治效果的影响

Study on effect of different pesticide-using methods on the control of tomato Trialeurodes vaporiorum Westwood

研究了叶面喷药、移栽后药剂灌根、移栽前穴施药沙对番茄温室粉虱防治效果的影响.结果表明,叶面喷药的方法速效性好、击倒性强,喷药后3d防效高达91.58%～96.06%;移栽后药剂灌根的方法防效高,施药后14d防效最高可达90.51%～96.72%,药效持续21d以上;移栽前穴施药沙的方法防效偏低.3种施药方法对番茄生长均无不良影响.

Three pesticideusing methods--Foliar spray, putting mixture of pesticide and sand in transplanting hole before transplantation and irrigating root range with pesticide solution after transplantation were used to study their control effect on the tomato Trialearodes vaporiorum Westwood.The results showed that foliar spray showed fast and high control efficacy (91.58%～96.06%) 3 days after treatment.Posttransplanting irrigation had long (over 21 days) and higher control efficacy (90.51%～96.72%) 14 days after treatment. Pretransplanting using of mixture of pesticide and sand performed lower control efficacy. But all the three using methods had no negative influence on the tomato growth.