一、野燕麦的发生及危害野燕麦是我场麦田的恶性杂草,它具有成熟早、易落粒、种子休眠期长及再生能力强等特点。过去由于我们用种不严,致使野燕麦大面积迅速蔓延,危害成灾,成为发展小麦生产的大障碍。七十年代末,全场野燕麦发生面积不足百亩,1982年已发展到2。。。多亩,占小麦面积的70%。据调查,野燕麦密度少的每平方米20~30株,多的毛00一500株,最严重的每平方米12了4株。小麦受害后一般减产1~S成,重的减产50 First, the occurrence and damage of wild oats Wild oats is a malignant weed in the field of wheat, it has mature early, easy to fall, the seed dormancy period and regeneration ability and so on. In the past, because of our unscrupulous use, the rapid spread of wild oats caused widespread damage and became a major obstacle to the development of wheat production. The late seventies, the audience wild oats occurred in less than acres, has grown to 2 in 1982. . . Mu, accounting for 70% of the wheat area. According to the survey, there are 20 to 30 plants per square meter with less density of wild oats, more than 50000 strains of hair and 4 strains of the most serious 12 plants per square meter. General wheat yield 1 to S after the damage, heavy production 50