飞达防除苗圃地杂草试验研究

Experiment of Using“Feida”for Weeding on Nursery Land

30%飞达草甘膦可溶性粉剂是采用国际领先水平的天然植物源高效助剂SDP与草甘膦原药配制而成,它克服了草甘膦原药在水中溶解度低的问题.采用每666.7 m2的商品用量分别为100、146.7、200和246.7 g的4个处理,进行了3次试验结果表明:使用100、146.7、200和246.7 g·666.7 m-2用量时,对应的平均除草率分别为49.0%、61.2%、65.1%和70.2%.在试验所选用的4个剂量中,以用量为246.7 g·666.7 m-2时效果相对较好,在河西地区全年化学除草2～3次即可.结合试验提出了用药注意事项.

30% “Feida”roundup soluble powder were compounded by SDP, a kind of high-efficient auxiliary originated from natural plant, and roundup original medicine .It solved the problem of low-solution of roundup original medicine in water .Adopting different dosage (100,146.7,200 and 246.7g·666.7m -2 ),3 tests were conducted.Results showed that the mean weeding rate were 49.0%, 61.2%,65.1% and 70.2% respectively.Among 4 dosage,effect of using amount of 246.7g·666.7 m -2 was better.It's fit for weeding by chemistry medicament for 2~3 times in all year in western part of Heibei .Matters needing attention for using weed killer were proposed in this paper.