我们这里气候干燥寒冷,一日多变,对除草剂效果影响很大。一、风速和蒸发量的影响:都兰县4、5月份风速在3米/秒以上的天数约占80%。在使用背负式工农16型喷雾器或手摇喷粉器施药时,如果风速超过3米/秒,一般除草剂的药效即可降低50%左右;当风速达到6米/秒时,2,4—滴和燕麦灵的喷雾除草效果可下降80%以上,甚至完全无效。在气候干燥、蒸发迅 Our climate here is dry and cold, changing day by day, a great impact on the effectiveness of herbicides. First, the impact of wind speed and evaporation: Dulan County in April and May the wind speed of 3 m / s or more days accounted for about 80%. In the use of backpack workers or farmers 16 sprayer or hand duster application, if the wind speed of more than 3 m / s, the general herbicidal efficacy can be reduced by about 50%; when the wind speed reached 6 m / s, 2, Spray weed control effects of 4-drops and oatmeal can be reduced by more than 80%, or even completely null and void. In the dry climate, rapid evaporation