植物源抗病毒剂丁香酚防治番茄黄化曲叶病毒病的效果分析

摘要

In this study, the field plot experiment was carried out to investigate the control effect of eugenol against tomato yellow leaf curl virus disease.The results showed that the control effect of using 20%eugenol EW for 4 times from tomato seedling stage was the highest (70.96%); the control effect of applying 20% eugenol EW for 3 times from tomato flowering stage was 65.07%;the control effect of first applying 20%guanidine・ copper wettable powder (WP) for 2 times and then using 20%euge-nol EW for 2 times was 60.31%, which was not significantly different from that of applying 20%eugenol EW;the continuous appli-cation of 20%guanidine・ copper WP for 4 times showed the lowest control effect (53.57%), which was significantly lower than that of all the above treatments.%采用田间小区试验的方法，研究丁香酚防治番茄黄化曲叶病毒病的效果，结果表明：从番茄苗期开始，施用4次20％丁香酚水乳剂的防效最高，为70．96％；从花期开始施用3次20％丁香酚水乳剂的防效为65．07％；先施用2次20％吗胍・铜可湿性粉剂，再施用2次20％丁香酚水乳剂的防效为60．31％，与20％丁香酚水乳剂处理没有显著差异；连续施用4次20％吗胍・铜可湿性粉剂的防效最低，为53．57％，显著低于其他处理。