苯磺隆对夏玉米的安全性研究

Study on the Safety of Tribenuron-methyl to Summer Corns

研究了苯磺隆不同剂量和用药时期对夏玉米的生长发育与产量的影响以及苯磺隆对玉米不同品种间的影响。结果表明,75%苯磺隆干悬浮剂0.8-1.2g/667 m2剂量对大多数玉米品种使用安全,1.6g/667 m2以上剂量对大多数玉米品种均能造成明显危害;苯磺隆适宜的喷药时期为夏玉米 3-4叶期,也即杂草2-3叶期。

Studied the effects of different dos ages of tribenuron-methyl on the growth and yield of corn , and the effects of tribenuron-methyl on different corn varieties. The test showed that the dosages of 0. 8-1.0g/667m2 of 75% tribenuron -methyl was safety to majority of corn varieties. The injury was serious to majority of corn varieties when dosage of tribenuron - methyl was higher than 1. 6g/667m2. The proper time to apply tribenuron-methyl is when corns have 3-4 leaves.