玉米空秆大致有两种情况:一种足先天不育农民党叫“公子包谷”,雄穗发达,植株生长正常,但雌穗(果穗)不发育,这种玉米从栽培措施上无法解决。另一种是后天不育,植株上有小的雌穗,但不抽花丝,不结籽粒。防止空秆就是防止这一种。一、发生原因 1、密度过大。玉米的密度过大,植株过早封行结果穗的功能叶片受荫蔽,光照不足,缺乏营养,植株个体发育差,雌穗分化受阻,是空秆的主要原因一般密度越大,空秆的百分率越高。 2、营养失调。一方面土壤瘠薄,养分满足不了玉米生长发育的需要,不能形成果穗。另方面氮、磷、钾配合不当,也造成空秆。如果缺磷、缺钾,茎秆内糖分代谢遭破坏而致使茎秆内的糖分增加,转运给雌穗 Corn stalks can be roughly divided into two situations: One type of innate infertile peasant party called “son of the Valley”, tassel developed, plant growth is normal, but the ear (ear) is not developed, the cultivation of corn can not be resolved. The other is sterile, plants have small ears, but not filigree, no seed. To prevent empty stalks is to prevent this one. First, the causes of 1, the density is too large. The density of maize is too high, and the plants prematurely seal the line. The functional leaves of the ear are shaded, lack of light and lack of nutrition. The individual plants are poorly developed and their ear differentiation is blocked. The main reason for the empty stalk is the general density, the percentage of empty stalk The higher. 2, malnutrition. On the one hand, infertile soil, nutrients can not meet the needs of corn growth and development, can not form ear. On the other hand nitrogen, phosphorus, potassium with improper, also caused by empty stalk. If the phosphorus deficiency, potassium deficiency, sugar metabolism in the stem is damaged, resulting in an increase in the stalks of sugar, transported to the ear