6种玉米种衣剂的理化性质测定及其安全性研究

为了解市场上玉米种衣剂的质量，对6种市售玉米种衣剂的理化性质和安全性进行了测定。理化性质表明：6种种衣剂的成膜时间、包衣均匀度和悬浮率都符合国家标准；不同种衣剂粘度值差异显著，只有福?克和克?戊?三唑酮符合国家标准；pH值都在6.83~7.55之间，其中克?福?萎、福?克?唑醇和克?醇?福美双符合国家标准；包衣脱落率只有克?福?萎大于10%，其它药剂均达到国家标准。室内发芽实验表明：经玉米种衣剂处理后，玉米种子活力等各项指标均低于对照；而田间实验表明：种衣剂处理后，玉米出苗率、幼苗素质与对照相比都有所提高，其中福?克效果最为显著。从室内、田间的实验结果分析，福?克是6种玉米种衣剂中的最佳选择。

Physical and Chemical Properties and Safety Study of Six Corn Seed-coatings to Maize

To better understand the quality of corn seed-coatings,physical and chemical properties and safety of six corn seed-coatings were tested.Film-forming,Coating homogeneity and suspension rate of all coatings met the national standards.Viscosity values of 15.5% Thiram · Carbofuran and 8.1% Carbofuran · Tebuconazole·Triadimenfon reached the national standards.pH ranges of all seed coatings occurred between 6.38 and 7.55,and 25% Carbofuran·Thiram·Carboxin,15% Thiram·Carbofuran·Tebuconazole and 20% Thiram·Carbofuran·Triadimenal came up to the National Standards.Pull-out rate of seed coatings met the national standards excerpt 25% Carbofuran·Thiram·Carboxin.Germination potential,germination rate,germination index,date of seedling vigor index,seedling length and fresh weight of seeds treated with seed coating were lower than the control in Laboratory.Seedling emergency rates of all treatments in field trail were improved comparing with the control,but seedling quality had no significant increase.The results showed that 15.5% Thiram·Carbofuran is the best choice among the six corn seed-coatings.