大麦黄化现象是我省早就存在的生产问题,它严重影响大麦产量的不断提高。通过多年来的调查研究,明确引起大麦黄化的原因很多,例如缺氮、药害、肥害和盐害等较为普遍。但对此类黄化症,只要对生产管理详加调查,就不难得出正确判断。另外,对酸性土壤的活性铝中毒黄化、苗期缺磷受冻黄化、湿害(亚铁中 The phenomenon of barley yellowing is an early production problem in our province, which seriously affects the continuous improvement of barley production. Through many years of investigation and study, it is clear that yellowing of barley is caused by many reasons, such as nitrogen deficiency, phytotoxicity, fertilizer damage and salt damage. However, for such etiologies, it is not hard to draw a correct judgment as long as the investigation of production management is carried out in detail. In addition, the activity of acidic soil aluminum poisoning yellow, phosphorus deficiency by freezing and yellowing, wet injury (ferrous