有些小麦品种在返青后出现叶片发黄、死苗现象。这里,就可能造成小麦叶片发黄死亡的原因及其处理措施建议如下:1倒春寒造成小麦叶片发黄由于我省去年冬季降水太少,小麦受旱严重,大大降低了小麦的抗逆性。越冬后小麦把自身储存的养分供给心叶生长,由于干旱,影响到小麦光合作用,养分供应不足,尤其暴露在空间的叶片中糖分等营养缺 Some wheat varieties turn yellow after emergence of leaves, dead seedlings phenomenon. Here, may cause the yellow leaves of wheat leaves died of the causes and treatment measures are as follows: 1 late spring caused the yellow leaves of wheat as the province last year, too little precipitation, wheat drought severely reduced the wheat stress resistance. After winter, wheat supplies its own stored nutrients to the leaf of the heart to grow. As a result of drought, photosynthesis of wheat is affected, nutrient supply is inadequate, especially in leaves exposed to space.