地里喷施相应的除草剂后,大批杂草就会纷纷死亡。杂草是怎样吸收除草剂的呢?这要从除草剂的种类谈起。当前施用的除草剂一般有两大类:一类是喷在茎叶上;一类是施在土壤里。喷在茎叶上的除草剂主要是通过叶片吸收的,但不同除草剂进入杂草体内的途经却不一样。叶表面有大量气孔,叶片上的角质层象一个稍微开放的海绵状物,以类脂物质为基本成分,其间点缀着亲水很强的果胶质束和开放的小孔。除草剂虽能通过气孔进入叶片内部,但主要还是从角质层进入 In the field after spraying the corresponding herbicide, a large number of weeds will have died. Weeds are how to absorb the herbicide it? This from the type of herbicide to talk about. The current application of herbicides generally have two categories: one is sprayed on the stems and leaves; one is applied to the soil. Herbicides sprayed on stems and leaves are mainly absorbed by the leaves, but different herbicides enter the weeds in different ways. Leaf surface has a large number of stomata, the stratum corneum on the leaf like a slightly open sponge, lipid material as the basic ingredient, dotted with a strong hydrophilic pectin bundle and open pores. Although herbicides can enter the leaves through the stomatal, but mainly from the stratum corneum into