生物复合种衣剂对水稻苗期生长的影响  

Effect of A Biological Complex Seed-coating Agent on Rice Seedling Growth

作　　者：陈丽华[1] 高秋雨 张家恒[1] 吴毅歆[2,3] 何月秋[2,3] 

机构地区：[1]云南农业大学植物保护学院,昆明650201 [2]云南农业大学农学与生物技术学院,昆明650201 [3]微生物菌种筛选与应用国家地方联合工程研究中心,昆明650217

出　　处：《中国农学通报》2015年第12期105-110,共6页Chinese Agricultural Science Bulletin

基　　金：云南科技支撑计划项目"玉米生物复合种衣剂的研制与示范"(2014BB018)

摘　　要：为探索自主研制的2%戊唑醇生物复合种衣剂（BCSA）提高水稻发芽率和生长量的可行性,按不同剂量对水稻种子包衣,并选用39%精甲霜灵·嘧菌酯、600 g/L吡虫啉、10.6%戊唑醇·福美双、35%噻虫嗪等悬浮种衣剂分别按药种比1：250、1：250、1：60、1：500为对照,开展了室内试验。结果表明,BCSA最适包衣剂量与发芽温度有关,在20-30℃范围内,温度高,BCSA用量略低,反之,温度低,BCSA用量略高。在20℃时,BCSA和4种对照药剂包衣种子比裸种对照发芽率分别提高5.77%、0.38%、1.53%、-0.39%、3.84%;与4种包衣剂处理和裸种对照相比,BCSA包衣种苗根长分别增长91.85%、154.37%、186.85%、118.09%和67.19%,芽长分别增长52.43%、93.81%、103.50%、50.74%和38.44%。水稻种子播入泥浆时,BCSA的最佳药种比例为1：50,在出苗后第35天,出苗率、地上和地下部分鲜重较裸种对照分别提高7.58%、18.96%、15.07%。To improve the germination rate and growth of rice, home- made 2% tebuconazole biologicalcomplex seed- coating agent（BCSA） was used with different doses for coating rice seeds, 4 seed- coatingagents, 39% matalaxyl- M azoxystrobin, 600 g/L imidacloprid, 10.6% tebuconazole thiram and 35%thiamethoxam were used with the ratios of the agent to seed weight, 1：250, 1：250, 1：60 and 1：500, respectively,as chemical controls. The results showed that the optimal doses for BCSA were related to germinationtemperature, namely the higher temperature was, the lower BCSA dose and vice versa between 20-30℃. At20℃, the germination rate of rice seeds coated with BCSA and the 4 agents were 5.77%, 0.38%, 1.53%,-0.39% and 3.84% higher than that of the naked seed control（NSC）. The root of seedlings from BSCA-coatedseeds were 91.85%, 154.37%, 186.85%, 118.09% and 67.19% longer, the sprout of those were 52.43%,93.81%, 103.50%, 50.74% and 38.44% longer than those of the four chemicals and NSC, respectively. Thebest ratio of BCSA to seeds was 1：50 when rice was seeded in mud. The emergency rate, fresh weights of aerialand underground parts of the seedlings were 7.58%, 18.96% and 15.07% higher than those of NSC at 35 dayafter seeding.

关 键 词：发芽率 发芽势 促进生长 解淀粉芽孢杆菌 戊唑醇 

分 类 号：S351.1[农业科学—作物栽培与耕作技术] S511[农业科学—农艺学]