| （1. Institute for the Control of the Agrichemicals, Ministry of Agriculture, Beijing 100125, China; 2. College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei 430070, China； 3. Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences, Wuhan 430064, China)Weed control effects, the light penetration rate and the yields of wheat were investigated to evaluate the application prospect of Sigma broad (mesosulfuron & idosulfuron) by field spraying test. The results showed that Sigma broad had a good control of Veronica didyma, Avena fatra, Vicia sativa, Galium aparine and Rorippa indica, and significantly decreased the height, fresh weight and the nutrition and moisture content of weeds. The inhibition of weeds significantly improved the light condition and yield of wheat. In general, Sigma Broad, applied in wheat fields, had a broad application prospects with the recommended dose of 8.1 ~ 13.5 g (a.i.)/hm2 for weeds maintained at 2 to 6 leaf stage. |
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