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西藏自治区农科所自六十年代起开展野燕麦防除研究,取得了显著的经济效益。如1978—1980年在江孜县昌布乡基点综合运用耕作诱发、化除与中耕3项措施,2年内野燕麦数量减少三分之二,对全乡总产增加105％,大面积平均亩产提高到530.8斤起了决定作用。1979—1984年全自治区推广燕麦畏除草剂累计达100万亩,增产在1亿斤以上。 一、分布与为害概况 西藏高原是野燕麦分布海拔最高的地区,自海拔3000公尺以下的雅鲁藏布江中上游河谷平原到4500公尺左右的半农半牧区均有广泛分布。主要为害春青稞与春麦,也为害冬麦、豌豆、蚕豆、苦豆、油菜等其他作物。据1978—1980年在昌布乡对150块
Agricultural Research Institute of Tibet Autonomous Region has carried out research on prevention and control of wild oats since the 1960s and achieved remarkable economic benefits. For example, from 1978 to 1980, three measures of cultivation-induced, chemical removal and cultivating were applied at the base of Changbu Township, Gyantse County, Gyosei County. Within two years, the number of wild oats decreased by two thirds and the total output of the township increased by 105% Up to 530.8 pounds played a decisive role. From 1979 to 1984, autonomous regions spread oatmeal herbicides accumulated to 100 million mu, an increase of more than 100 million kg. I. Distribution and Harm Overview The Tibet Plateau is the highest-lying area of wild oat. It is widely distributed in the semi-agricultural and semi-pastoral areas of about 4500 meters from the middle and upper reaches of the Yarlung Zangbo River below 3,000 meters above sea level. The main damage to the young spring and spring wheat, but also for winter wheat, peas, beans, bitter beans, rapeseed and other crops. According to 1978-1980 in Changbu Township, 150 blocks