防除杂草,是农业生产要夺取高产的重要一环。防除杂草,除了要识别杂草种类外,重要的是查明田间恶性杂草的种类,研究这些恶性杂草的生物学特性,掌握他们与作物竞争动态规律,找出杂草一生中的防治效果最佳期,制订出有科学根据的综合防治措施,收到最好的防治效果。 Control weeds, is an important part of agricultural production to seize high yield. Control of weeds, in addition to identifying weed species, it is important to identify the types of malignant weeds in the field, to study the biological characteristics of these weeds, to master their dynamic competition with crops and find out the weed control The best results, to develop a scientific basis for comprehensive prevention and control measures, received the best control effect.