1·All the food could be grown organically, eliminating the need for herbicides, pesticides and fertilisers.
所有的食物都可以有机种植，不需要除草剂、杀虫剂和化肥。
2·It is crucially important to farmers that the herbicides they use to control weeds not damage their crops.
对农民来说至关重要的是，他们用来控制杂草的除草剂不能损害他们的庄稼。
3·Synthetic herbicides, on the other hand, although not any longer lasting, can be reapplied as the crop grows.
另一方面，人造除草剂虽然不再持久，但可以在作物生长时重新使用。
4·The use of herbicides and intensive forms of agriculture means that fields of wheat and barley now have few weeds.
除草剂的使用和集约型农业使得现在小麦和大麦麦田里几乎没有杂草。
5·They found that longer residence correlated with more adoption of improved plant varieties but less adoption of chemical herbicides.
他们发现，居住的时间越长，采用的改良植物品种越多，而使用的化学除草剂越少。