玉米受涝之后,植株生长缓慢、矮小、细弱,出叶速度慢,叶面积小,下部叶片枯黄,中部叶色变谈,有时出现红叶,未出苗的会延长出苗时间。积水淹没全株时,会造成死苗。玉米受涝后,土壤含氧量下降,根系呼吸受阻,发育慢,吸收土壤养份的能力下降。 After the corn is flooded, the plants grow slowly, short and thin, the leaves are slow, the leaf area is small, the lower leaves are yellowish, the leaves in the middle are changed, sometimes the leaves are red, and the non-emergence will prolong the emergence time. When water flooded the whole plant, it will cause dead seedlings. After the corn was flooded, the soil oxygen content decreased, the root respiration was blocked, the development was slow, and the ability to absorb soil nutrients decreased.