一、发生概况 海东地区是青海省主要粮油产区。其中粮食占全省总产量60％以上;油料年总产量占全省50％以上。但近几年来野燕麦发生严重,给粮油生产造成了严重威胁。全区300多万亩耕地全部受害,其中垴山地区尤为严重。1987年因野燕麦危害,全区损失粮食 First, the occurrence of Haidong region is the main grain and oil-producing areas in Qinghai Province. Which grain accounted for more than 60% of the province’s total output; annual output of oil accounted for more than 50% of the province. However, serious occurrence of wild oats in recent years has posed a serious threat to grain and oil production. More than 300 million mu of arable land in the entire district have been harmed, of which the area is particularly serious. In 1987 due to wild oat damage, the region lost food