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1989～1991年,在湖南郴州、浏阳等烟区进行烟草花叶病的药剂防治试验.6种药剂比较试验结果,以植病灵效果较好,防效为60%～89.16%.多点小区试验防效为68.44%～84.62%.大面积示范试验防效为65.14%～78.26%,平均增产205.50kg/ha,增值1250.10元/ha,增加上等烟比例13.92%,提高均价0.47元,投入与产出比为1:13.78.植病灵不同施药时期和次数防治试验结果表明,若仅施药1次,以团棵期施药最好,单就施药次数比较,以在苗床期(移栽前7d),移栽活苗后,团棵期施药3次效果最佳.
From 1989 to 1991, tobacco mosaic disease prevention and control experiments were conducted in Chenzhou, Liuyang and other tobacco-growing areas of Hunan Province. The results of six kinds of agents showed that the effect of planting disease was better and the control effect was 60% -89.16%. The test control effect was 68.44% -84.62%. The control effect of large-scale demonstration test was 65.14% -78.26% with an average increase of 205.50kg / ha and a value of 1250.10 yuan / ha, with an increase of 13.92% of the finest tobacco and an average price of 0.47 yuan, The ratio of input to output was 1: 13.78. The results of the experiment on the control of different stages and times of Phytophthora infestans showed that if only one treatment was applied, Period (7d before transplanting), after transplanting live seedlings, the best results were obtained by applying 3 times during the flowering stage.