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利用植物基因工程培育抗除草剂的农作物品种是扩大现有除草剂的使用范围和安全使用除草剂，形成经济、有效、对环境安全、与现代化农艺相配套的除草技术的关键。基因工程改良农作物对除草剂的抗性的主要途径有二：一是利用点突变修饰除草剂对植物作用靶标的水平和敏感性，或诱导靶酶或靶标蛋白质过量生产，使作物吸收除草剂后仍能进行正常的代谢作用；二是引入降解除草剂的酶和酶系统，在除草剂发生作用前将其降解或解毒。现已在几种重要的农作物中转入抗除草剂基因，获得２０多种稳定的抗除草剂转基因工程植株，其中已有部分进入田间试验和生产应用。
Plant genetic engineering to breed herbicide-tolerant crop varieties is key to expanding the use of existing herbicides and the safe use of herbicides to form economical, efficient, environmentally safe and herbicidal technologies that are compatible with modern agronomic practices. Genetic engineering to improve crop resistance to herbicides have two main ways: First, the use of point mutations modified herbicides on the level of plant targets and sensitivity, or induced target enzyme or target protein overproduction, the crop absorb herbicide Still can carry out the normal metabolism; the second is the introduction of enzymes and enzyme systems that degrade herbicides to degrade or detoxify them prior to their action. Herbicide-resistant genes have now been transferred to several important crops and more than 20 stable herbicide-resistant transgenic plants have been obtained, some of which are already in field trials and production applications.