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一、前言野燕麦(Avena spp.)是一年生禾本科杂草,广泛分布于温带地区。由于它分布广,密度大,适应性强,繁殖率高,严重危害禾谷类作物的生产,是世界性的重要害草之一。如美国和加拿大,危害面积约为1亿英亩,每年损失一亿五千万美元。澳大利亚,野燕麦也是小麦种植中最难治的杂草,每年由它造成的损失达30～40万美元。英国每年有二百二十五万英亩的小麦和大麦受野燕麦的侵染,分布于英国全土,每年春(3～5月)秋(9～10月)
I. INTRODUCTION Avena spp. Is an annual grass weed that is widely distributed in temperate regions. Due to its wide distribution, high density, strong adaptability, high reproductive rate and serious harm to the production of cereal crops, it is one of the most important pests in the world. Such as the United States and Canada, the damage area is about 100 million acres, losing 150 million U.S. dollars each year. In Australia, wild oats are also the most intractable weed in wheat growing, causing an annual loss of 300,000 to 400,000 U.S. dollars. Each year, 2.25 million acres of wheat and barley are oiled in wild oats in the United Kingdom and are distributed throughout the country. Each spring (March-May) autumn (September-October)