以向日葵品种陇葵杂6号为试材，田间试验研究了不同浓度咯菌腈悬浮种衣剂包衣处理对陇葵杂6号向日葵生长发育及抗病性的影响。结果表明，采用不同浓度咯菌腈悬浮种衣剂包衣处理后，出苗率均高于对照白籽不包衣。其中以咯菌腈悬浮种衣剂8.33 mL定容至50.00 mL拌种1 kg处理的种子出苗率最高，达95.71%。从长势、生育期、不育株率、盘径、单盘粒重及对主要病害的防控效果和产量表现等综合分析，以咯菌腈悬浮种衣剂8.33 mL定容至50.00 mL拌种1 kg处理的效果最好，苗齐苗壮、根深叶茂，也有较强的田间抗病性；折合产量最高，为3 833.33 kg/hm2，较对照白籽不包衣增产18.56%。

Taking the sunflower variety Longkuiza 6 as the experimental material， the effects of different concentrations suspended seed coating agent of fludioxinil on the growth and disease resistance of yield under different concentration gradients were studied. The results showed that the rate of seedling emergence was higher than that of white seed without coating with different concentrations of fluromonil suspension seed coating agent. Among them， the seed emergence rate of the treatment with fluromonil suspension seed coat agent 8.33 mL constant volume to 50.00 mL seed mixing 1 kg was the highest， reaching 95.71%. According to the comprehensive analysis of the growth， growth period， sterile plant rate， disc diameter， grain weight of single disc on the prevention and control effect of main diseases and yield performance of Longkuiza 6 after its emergence， the best effect was obtained by mixing seeds 1 kg with fluromonil suspended seed coat agent 8.33 mL in constant volume to 50.00 mL. and the seedlings were homogeneous and strong， and had strong field disease resistance as well. The yield was the highest， 3 833.33 kg/hm2， 18.56% higher than that of the control white seed without coating.

S565.5

国家现代农业产业技术体系(CARS-14-2-22)；甘肃省青年科技基金计划项目(21JR1RA357)。