关键词: 直播稻田, 杂草, 封杀结合, 防治效果

Abstract:

Weeds in direct-sowing rice fields show that there are multiple types, high density, long grass emergence duration, and serious harm. With the continuous expansion of large-scale planting areas, the field management is relatively extensive, resulting in unsatisfactory soil sealing and weed control effects. Due to the long-term and widespread use of herbicides such as bensulfuron methyl, cyhalothrin, and pentafluorosulfonamide, the problem of weed resistance has become increasingly prominent. The “one seal, one elimination” technology is difficult to effectively control weed damage and seriously affects grain production. Therefore, it is necessary to explore new technologies for weed control in direct-sowing rice fields. This study conducted a weed control experiment in direct-sowing rice fields by combining soil sealing with stem and leaf treatment. The results showed that after 20 days of treatment, each treatment had a control effect of over 90% on Ammannia arenaria, Fimbristylis miliacea (L.)Vahl.,Cyperus difformis L., and total weeds.

Key words: direct-sowing rice fields, weed, combining seal and elimination, control effect