除草剂杀伤植物的机制是除草剂进入植物体内,根据药物性质,会干扰某一环节,使杂草生理、生化过程失去平衡,最后导致死亡。除草剂只能杀死杂草而对农作物没有伤害,这就是除草剂的选样性所致。选择性有四种: 位差选择。如利用作物与杂草根系分 Herbicide-killing plant mechanism is the herbicide into the plant body, depending on the nature of the drug, will interfere with a certain part of weeds physiological and biochemical processes out of balance, and ultimately lead to death. Herbicide can only kill weeds without harm to crops, which is the herbicidal nature of the selection. There are four kinds of selectivity: bit difference choice. Such as the use of crops and weeds root system points