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1970年,我区引黄灌区和宁南山区各县市,小麦遭到了我区历史上第一次黄叶病的严重危害,轻者大幅度减产,重者绝收.仅据灌区11个县市不完全统计,一般减产在30%以上,个别县市甚至减产达60%.据田间调查观察,我区发生的小麦黄叶病同流行于国内外的小麦黄矮病非常相似,为了进一步探讨病因,我们学习兄弟省区经验,进行了蚜虫传毒试验及1971年蚜虫发生情况的调查,取得了一些结果,现初报于后:
In 1970, the Yellow River Irrigation District in our region and counties and cities in the mountains of southern Ningxia, wheat suffered the first yellow leaf disease in the history of our region a serious hazard, a significant reduction of light output, Incomplete statistics, the general reduction of more than 30%, even in some counties and even cut 60% .According to field observations, the occurrence of wheat yellow leaf disease in our area with the prevalence of wheat yellow dwarf at home and abroad are very similar, in order to further explore the cause , We study the experience of fraternal provinces, conducted aphid experiments and aphids in 1971 a survey of the occurrence of the situation, and achieved some results, the first report after: