探析不同种衣剂对藜麦种子萌发及幼苗生长状态的影响，筛选出适宜藜麦的种衣剂。以陇藜1号和白藜为材料，选择5.0%噻虫嗪悬浮剂、8.0%克百威悬浮剂、5.0%吡虫啉悬浮剂、2.8%噻虫嗪悬浮剂等4种种衣剂对藜麦进行包衣试验，设置了5个不同浓度梯度(体积比为1 ∶ 0、1 ∶ 1、1 ∶ 2、1 ∶ 3、1 ∶ 4)，研究不同浓度对藜麦种子发芽率、发芽指数和生物量的影响。结果表明，在种子萌发试验中，除8.0%克百威悬浮剂外，其他3种不同浓度梯度种衣剂处理下陇藜1号和白藜的发芽率、发芽势均高于对照清水浸种。在盆栽和大田试验中，5.0%吡虫啉悬浮剂(1 ∶ 1)处理下的藜麦出苗率均为最高，其中盆栽陇藜1号和白藜的出苗率分别为73.33%、91.33%，大田分别为95.67%、97.83%；且该处理下盆栽和大田幼苗的生长状态均为最佳。综合考虑认为，种衣剂5.0%吡虫啉悬浮剂与水按体积比1 ∶ 1浓度是最适藜麦种子种衣剂，具有较好的应用前景。

This study explored the effects of different seed coating agents on quinoa seed germination and seedling growth so as to identify the most suitable coating formulation. Using Longli 1 and white quinoa as materials, 4 seed coatings, 5.0% thiamethoxam, 8.0% carbofuran, 5.0% imidacloprid, and 2.8% thiamethoxam suspension, were tested at 5 concentration gradients (volume ratios of 1 ∶ 0, 1 ∶ 1, 1 ∶ 2, 1 ∶ 3 and 1 ∶ 4). The effects of these concentrations on quinoa germination rate, germination index, and biomass were evaluated. Results showed that, except for 8.0% carbofuran, all other seed coatings at different concentrations increased the germination rate and vigor index of Longli 1 and white quinoa compared with the water-treated control. In both pot and field experiments, quinoa treated with 5.0% imidacloprid suspension (1 ∶ 1) showed the highest emergence rates, 73.33% and 91.33% in pots, and 95.67% and 97.83% in the field for Longli 1 and white quinoa, respectively. Seedlings under this treatment also exhibited optimal growth performance. Overall, the 5.0% imidacloprid suspension at a 1∶1 ratio was identified as the optimal seed coating for quinoa, showing strong potential for practical application.

S512.9

甘肃省农业科学院农业科技创新专项计划项目(2022GASS07)；甘肃省科技计划重大专项(2023DWA004)；甘肃省重点研发计划(23UFWA0011)；兰州市科技计划(2023-QN-172)。