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小麦生理黄化对产量影响极大。轻者植株生长不良,造成减产欠收,重者植株枯死颗粒无收。小麦生理黄化苗期表现为叶尖发黄,脚叶枯萎,植株矮小,生长缓慢,往往造成僵苗。中后期表现为根系细弱而萎缩,植株矮小,早衰或青枯,生长缓慢,轻者抽穗不齐,穗小粒少,重者植株逐渐枯死,颗粒无收。 小麦生理黄化的主要原因,一是土壤酸度过大,pH值在4.5～5.5之间,酸度愈高黄化愈严重。二是稻田种麦比旱地种麦发生严重,三是沙质土比泥质
Physiological yellowing of wheat has a great impact on the yield. Light plants poor growth, resulting in reduced production due to crop failure, dead weight crop failure. Physiological yellowing of wheat showed yellowish leaf tip, foot-leaf withered, short plants, slow growth, often resulting in stiff seedlings. In the late and mid-late, the root system showed weak and atrophy, plant dwarf, premature aging or withered, slow growth, light ear missing, less spikelets, heavy plants gradually withered, crop failure. Physiological yellowing of wheat, the main reason is that soil acidity is too large, pH value of 4.5 to 5.5, the higher the acidity of the more serious yellowing. The second is the serious drought in paddy fields and wheat, and the third is the sandy soil is more muddy