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当前草害已成为川西平原小麦进一步高产的重大障碍。若要在现有500～550斤基础上再有新的突破,除了培育高抗、高产、适应性广的品种,采用先进的栽管技术外,防除杂草是一个不可轻视的问题。田间杂草是除田园种植的“目的作物”之外,在田间滋生的带有野生特性的植物。它们虽受到人为栽培条件影响,但本身并非栽培对象。它们具有种类繁多,生命周期短、发芽早、耐寒、旱、瘠力强、繁殖迅速,种子数目多,发芽期长,保芽力强,生态各异等特点。它与作物争夺养分,阳光,造成田间阴闭,增高湿度,给病虫害的发生创造了一个有利的环
Current grass damage has become a major obstacle to further yielding wheat in the western Sichuan plain. If we want to make new breakthroughs on the basis of the existing 500-550 kg, in addition to cultivating varieties with high resistance, high yield and wide adaptability, and adopting advanced planting techniques, the prevention and control of weeds is a problem not to be underestimated. Field weeds are plants with wild features that breed in the field, in addition to the “purpose crop” that is planted in pastoral areas. Although they are affected by artificial cultivation conditions, they are not cultivated in themselves. They have a wide variety, short life cycle, early germination, cold, drought, strong barren, rapid propagation, the number of seeds, long period of germination, strong budding and ecological characteristics. It competes with the crops for nutrients and sunshine, causing the fields to become overcast and increase the humidity, creating a favorable environment for the occurrence of pests and diseases