herbicides

Note: Some sulfonylurea herbicides have other general names, tradenames and code names.

注: 有些除草剂还有其它通用名 、 商品名或代号.

Poisons that generally affect only unwanted plants, or weeds, are called herbicides.

那些只抑制多余植物或杂草生长的药被称为除草剂.

Herbicides are difficult to apply horizontally over long distances.

要在长段距离的水平方向施用除草剂也很困难.

Phenylcarbamate herbicides were among the earliest herbicides developed.

氨基甲酸苯酯除莠剂是发展最早的一种除莠剂.

Among the many regulatory substances in use we have controllable and selective herbicides.

在所有的许多调节物质中,有控制性的和选择性的除草剂.

There is a lot of concern over the amount of herbicides and pesticides used in farming.

人们对农业上灭草剂和杀虫剂的用量非常担忧.

Acetochlor is currently one of most widely used herbicides in China.

乙草胺是目前我国使用最广泛的除草剂之一.

Resistance of weeds to certain herbicides is beginning toshow up.

杂草对某些除草剂的抗药性已显现出来.

Herbicides provide a cheaper and more effective means of controlling weeds than cultivation.

除草剂比清耕消除杂草成本低,效率高.

Note: Some sulfonylurea herbicides have other generalnames, tradenames and code names.

注: 有些除草剂还有其它通用名、品名或代号.

Efficacies of 8 herbicides in winter oilseed rape field were compared.

研究了8种除草剂防除冬油菜田杂草的效果.

Scientists have known for years that weeds develop resistance to herbicides.

科学家们早在几年前就了解到杂草对除草剂产生了抗体.

Most herbicides were degraded and run off in soil.

大部分除草剂在土壤环境中被降解或流失.

The researchers placed the hibersites [ herbicides ] on the sorghum seeds.

研究者把除草剂放在高粱种子上.

Arsenic is widely associated with the manufature of herbicides and pesticides.

砷广泛地应用于除草剂和杀虫剂的制造中.