玉米茎秆上没有结果穗或虽结果穗,但结粒很少或不结粒,被人们称之为“空秆”。玉米空秆有两种类型,一种类型是先天不育株,另一种类型是茎秆上有果穗,但果穗小,不结或少结籽粒。空秆病害发生时病株一般较健壮,叶片、株型、株高和其他正常植株差异不大,只是没有雌穗或者雌穗很小,穗粒数也往往较少,在生育后期才表现出来。玉米空秆发生的原因?引起玉米空秆的原因很多,但主要与果穗分化发育期间玉米体内能否获 There is no result on the corn stalk spike or the result of the spike, but the grain little or no grain, what people call “empty stalk.” There are two types of empty corn stalks, one type is innate infertility strains, the other type is a stalk with ears, but the ear is small, no knot or less knot grain. The diseased plants were generally robust when empty stalk disease occurred, but the leaves, plant type, plant height and other normal plants were not significantly different except that there were no scallops or small scion and few grains per spike. . The reason why corn stalks occur? There are many reasons that cause stalks of corn, but whether corn can be obtained in the body during the differentiation and development of ear