论文部分内容阅读
虽然作为农药之一的除草剂对人类及动物的毒性大大低于杀虫剂,但我们绝不能忽视除草剂对绿色蔬菜的影响。一、根据除草剂的类别选择除草剂1、从吸收方式考虑。除草剂有内吸传导型选择性、触杀型选择性、内吸传导型灭生性和触杀型灭生性四种。内吸传导型除草剂是指喷在植物的某一叶片,被吸收后,可被传导到另外的叶片、花、果及根部,或喷在土壤表层被植物根系吸收后,可被传导到叶片、花及果部。触杀型除草剂是指喷到植物的某一叶片,不会被传导到其它叶片,更不会传导到植物的根、花和果部。同样,喷到土壤表层的触杀型除草
Although herbicides, as one of the pesticides, are far less toxic to humans and animals than pesticides, we must not ignore the effects of herbicides on green vegetables. First, according to the choice of herbicide herbicides 1, from the absorption method to consider. Herbicides have internal conductivity-selective, contact-selective, internal conduction-mediated biocidal and contact-killing biocidal four. Infeed herbicide refers to a plant sprayed on a leaf, after being absorbed, can be transmitted to the other leaves, flowers, fruits and roots, or spraying in the soil surface is absorbed by the plant roots can be conducted to the leaves , Flowers and fruit department. Contact-type herbicide is sprayed onto a certain plant leaf, will not be transmitted to other leaves, but will not be transmitted to plant roots, flowers and fruit. Likewise, the weed-killing weed sprayed onto the surface of the soil