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小麦丛矮病在我国分布甚广,成为影响麦区高产稳产一个重要问题。据了解77年河北省发病面积达199万亩,造成较大损失,轻的减产1—2成,重的减产4—5成,有30万亩小麦绝收,损失小麦3亿斤。近年来天津地区也有发展的趋势,据蓟县测报站统计74年发病面积1800亩,75年4000亩,76年12000亩,77年2万亩,78年发病面积比77年又有增加,并有毁种地块。
Wheat dwarf disease is widely distributed in our country, has become an important issue that affects the high and stable yield of wheat. It is understood that the incidence of disease in Hebei Province in 1977 reached 199 million mu, resulting in greater losses, light cut 1-2 percent, heavy cut 4-5%, 30 million mu of wheat and 400 kg of wheat loss. In recent years, Tianjin has also had a tendency of development. According to statistics of Jixian County, 74,000 years of disease coverage area, 75 years of 4000 acres, 76 years of 12000 acres and 77 years of 20000 acres have been developed. The incidence of disease in 78 years increased again compared with that in 1977 Destroy the kinds of land.