间作对番茄黄化卷叶病毒病发生的影响

番茄黄化卷叶病毒的流行危害引起番茄产量大幅度下降，番茄间作其它作物，可减轻媒介昆虫传毒，是综合防治番茄黄化卷叶病毒的有效方法之一。番茄间作黄瓜、玉米、菜用大豆、黄秋葵、红薯后对发病情况及白粉虱虫口密度的影响试验结果表明，定植58d后，病害发生达高峰期；白粉虱成虫迁飞高峰在1月份，1月中旬至2月中旬白粉虱幼虫虫口密度最大；定植后37、47、58、78d，不同间作作物上白粉虱幼虫虫口密度有显著或极显著差异；黄瓜、菜用大豆是白粉虱偏爱的寄主植物；番茄间作菜用大豆、玉米、红薯、黄瓜对番茄黄化卷叶病毒有一定防效。

Effect of intercropping on tomato yellow leaf curtvirus incidence on tomato

Tomato interplant with five species,cucumber,corn,vegetable soybean,okra,sweet potato,and no intercropping as control,was conducted from November,1999 to March,2000 at ARC-AVRDC,Kasetsart University,Kamphaeng Sean,Nakhon Fathom,Thailand.Tomato yellow leaf curl virus(TYLCV)incidence and whitefly populations were recorded.TYLCV incidence on tomato increased rapidly after 58 DAT(days after transplanting).Tomato intercropping with vegetable soybean,corn,sweet potato and cucumber reduced partly the infection of TYLCV.Whitefly adults hold the highest population during January 2000 in the field.The population of whitefly larvae increased sharply from 10th January to 10th February 2000.Whitefly larvae population obtained highly significant or significant differences by the different crops on 37,47,58,78 DAT.Among intercrops cucumber and vegetable soybean were the preferred hosts of whiteflies.