对症救治小麦黄苗引起小麦苗发黄的原因是多方面的，必须辨症查因，对症救治，才可能取得好的效果。１．缺氮：表现为麦苗均匀的褪禄变黄，叶尖干枯，下部老叶发黄、枯黄，植株矮小，叶片弱，分蘖少而瘦弱。这种黄苗多出现在土地瘠薄、底肥不足或追肥不及时的地块。应及时... Symptomatic treatment of wheat seedlings caused by wheat yellow seedlings yellow is due to many reasons, we must identify symptoms of investigation, symptomatic treatment, may achieve good results. 1. Nitrogen deficiency: The performance of the wheat seedlings Pinglulu yellow uniform, withered leaves, the lower part of the old leaves yellow, yellow, short plants, leaves weak, less tiller and thin. This yellow seedlings appear in the barren land, lack of fertilizer or top-dressing not timely plots. Should be promptly ...