李千和 孙俊铭

摘要 [目的]明确水稻种子药剂包衣处理对水稻主要病虫害控制效果及增产效果。[方法]通过田间试验研究水稻种子处理对水稻主要病虫害控制效果及增产效果。[结果]280 g/L异噻菌胺·肟菌酯FS 15 mL+240 g/L氟唑菌苯胺FS 8.3 mL+60%吡虫啉FS 4 mL+成膜剂2 mL/kg种子包衣处理具有明显的壮苗效果，对水稻安全，预防水稻恶苗病的效果明显，对秧田期灰飞虱也有较好的防效;对大田水稻纹枯病、水稻叶瘟病具有较好的防治效果，对水稻穗瘟病也有明显的控制效果，增产效果显著。[结论]水稻种子药剂包衣处理可减少大田施药1～2次，降低农药使用量，为水稻病虫绿色防控提供了科学依据。

关键词 种子药剂包衣;水稻主要病虫害;防治效果;增产效果

中图分类号 S435.11 文献标识码 A 文章编号 0517-6611（2020）14-0140-04

doi：10.3969/j.issn.0517-6611.2020.14.039

Abstract [Objective]To determine effects of control and increasing yield of rice seed pesticide coating treatment on the main diseases and insect pests.[Method]Field experiments were carried out to study the effect of control and increasing yield of rice seed treatment on the main diseases and insect pests.[Result]The seed coating treatment of 280 g/L isothiamide-oximide FS 15 mL+240 g/L fluorazolidine FS 8.3 mL +60% imidacloprid FS 4 mL+ film forming agent 2 mL/kg had obvious seedling strengthening effect， which was safe for rice， had obvious effect on preventing rice disease， and had good effect on seedling stage grey planthoppers. It had good control effect on rice sheath blight and leaf blast in field， and also had obvious control effect on rice ear blast.[Conclusion]The coating treatment of rice seed pesticide can reduce the field application of pesticide 1-2 times， reduce the use of pesticide， and provide a scientific basis for the green prevention and control of rice pests.

Key words Seed pesticide coating;Main diseases and insect pests of rice;Control effect;Yield increase effect

水稻病虫害种类多、危害重[1]，水稻种子药剂包衣处理对提高种子出苗率、防治苗期病虫害效果明显，是一项经济有效的方法;但以往的研究多是在防治水稻秧田期病虫害，对大田期病害的防治效果、控制持效期研究较少[2-4]。为探索水稻种子药剂包衣处理对秧田期水稻恶苗病（ Fusarium moniliforme Sheld）、灰飞虱（ Laodelphax striatellus Fallen）的防治效果及壮苗效果，笔者对大田期水稻纹枯病（ Rhizoctonia solani Kuhn）、稻瘟病（ Pyricularia oryzae ）的防治效果、控制持效期及增产效果进行研究，旨在为水稻病虫绿色防控提供科学依据。

1 材料与方法

1.1 试验药剂

280 g/L异噻菌胺·肟菌酯FS、240 g/L氟唑菌苯胺FS、60%吡虫啉FS（拜耳作物科学（中国）有限公司），350 g/L噻虫嗪FS、62.5 g/L精甲·咯菌腈FS（先正达（中国）投资有限公司）。

1.2 试验设计

试验设6个处……