药物拌种对燕麦抗蚜性与产量及其构成因素的影响  

The effects of seed dressing on aphid-resistance yield and yield components of oats

作　　者：胡凯军[1] 赵桂琴[1] 刘永刚[2] 满元荣[1] 孙仁国[1] 

机构地区：[1]甘肃农业大学草业学院草业生态系统教育部重点实验室中-美草地畜牧业可持续研究中心,甘肃兰州730070 [2]甘肃省农业科学院植物保护所,甘肃兰州730070

出　　处：《草原与草坪》2010年第5期70-73,共4页Grassland and Turf

基　　金：现代农业产业技术体系建设专项资金(nycytx-14);国家科技支撑计划(2008BADB3B07;2007BAD52B06)资助

摘　　要：用2种种衣剂各6个浓度梯度分别对皮燕麦、裸燕麦进行拌种,调查不同处理下燕麦拔节期蚜虫危害情况,成熟后进行考种,研究蚜害对燕麦产量及其构成因素的影响。结果表明:吡虫啉拌种皮燕麦在300 mL/50 kg时达到抗虫水平;吡虫啉拌种裸燕麦在低浓度下(100 mL/50 kg)即发挥效力。噻虫嗪拌种皮燕麦和裸燕麦,在最低浓度(100 mL/50 kg)时就达到抗虫水平。I/I*值与燕麦瘪粒数呈显著正相关,与燕麦株高和种子产量呈显著负相关,蚜害越严重,由蚜虫引起的燕麦红叶病也越严重,燕麦植株矮化,种子产量降低。Two different seed dressing were used to treat covered and naked oat at different ratios,their effects on the number of aphid,grain yield and yield components were studied.The results indicated that 300 mL/50 kg imidacloprid was the best treatment for covered oat,the least concentration was enough for naked oat.For thiamethoxam,the lowest concentration（100 mL/50 kg）was the best.I/I＊ was positively correlated to number of shriveled grains,and negatively correlated to plant height and grain yield.The severer the aphids,the severer BYDV,plant was shortened and grain yield was reduced.

关 键 词：拌种 抗蚜性 产量 构成因素 

分 类 号：S482[农业科学—农药学] S54[农业科学—植物保护]