田间小区试验结果表明，施药后在雨量较多情况下，６％密达粒剂对烟草蜗牛仍具有良好的防治和保护烟苗的效果。各处理剂量１０．０ｋｇ／ｈａ、８．５ｋｇ／ｈａ和７．０ｋｇ／ｈａ。经统计分析在防治效果上处理间差异不显著，最低剂量７．０ｋｇ／ｈａ，在施药后２天、７天、１６天和２１天的校正防效分别为５２．１２％、６６．６７％、７４．２８％和７７．７４％，其保苗效果分别为７２．７３％、６６．６７％、７２．７３％和６９．４４％。 Field plot test results show that, after the application of rainfall in the case of more, 6% Might as Granules of tobacco snails still have good control and protection of tobacco seedlings. Each treatment dose was 10.0 kg / ha, 8.5 kg / ha and 7.0 kg / ha. The statistical analysis showed that there was no significant difference in the control effect between treatments, with the lowest dose of 7.0 kg / ha, and the control effects at 52 days, 7 days, 16 days and 21 days after application were 52.12% and 66.67 %, 74.28% and 77.74%, respectively. The seedling protection effect was 72.73%, 66.67%, 72.73% and 69.44% respectively.