Summer corn, beware of baldness and empty stalks

The inhibitory effect of tassel on the ear. Because the tassel is developed from the top bud, the growth potential is strong, and the tassel differentiation is 7-10 days earlier than the female ear; while the ear differentiation is developed by the axillary bud, which is late in development and weak in growth. When the external conditions are not suitable, the tassel will have a significant inhibitory effect on the ear, forming a bald or empty stalk.

Unexpected pollination caused by high temperature or low temperature during flowering. During flowering, when the temperature is higher than 38 degrees or lower than 18 degrees, the male and female cannot normally pollinate and fertilize, forming bald or empty stalks.

Drought weather was encountered during heading. In the big bell period, when the corn needs the most water, the drought affects the normal flowering of the tassel and the extraction of the fringe of the ear. Caused the tasseling advance and the filaments to be delayed. In this case, the vitality of the pollen is weak, which makes the filament easy to wither, resulting in poor fertilization and formation of bald or empty stalks.

Malnutrition. In the differentiation stage, the female and the tassel are malnourished, the photosynthetic area is small, and the accumulation of organic matter is small, which makes the ear dysplasia cause empty stalks; while in the prolonged stage of corn, if the nutrient is too much, the vegetative growth is too high, resulting in weakened reproductive growth. Reducing the nutrient distribution to the ear can also lead to stalks caused by dysplasia of the ear. In the absence of elements such as boron and zinc, the flowers may cause empty stalks or baldness.

Continuous rainy weather. During flowering, if continuous rainy weather is encountered, the light is insufficient, and the pollen swells and ruptures and dies or sticks into a mass, resulting in the formation of bald or empty stalks.

The cultivation density is too large. Due to the high density, the ventilation conditions in the field are poor. In the flowering period, the powder is poor or the malnutrition of the dense plant affects the differentiation of the female and stamen, forming an empty stalk.

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