1, lack of nutrition. Phosphorus in the soil affects cell division. Especially during the elongation of the filaments, the lack of phosphorus filament elongation is slow and affects pollination. If the tip of the panicle is small and abnormally white, phosphorus and potassium are lacking, especially potassium deficiency.
2. Spike degeneration. Spikelets at the tip of the ear, degenerative deformity, and sometimes male and female or male flowers develop and female flowers do not develop. Affects the normal pollination of corn and it is difficult to solidify.
3, late development of filaments. The development of filaments at the tip of the ear is delayed, and silking is delayed. It is often not matched with pollination when the male flower is pumped, making it unable to seed.
4, dry and dry. The corn encounters drought during flowering and pollination, and the male flower and female flower bloom at long intervals, resulting in missed tassel loose powder during the elongation of the filament, resulting in poor pollination and fruiting effects.
5, excessive dense planting. Excessive planting density results in poor ventilation and light transmission during the later growth period of the corn, which affects the normal growth of the corn.
6, the lack of soil fertilizer. In the absence of boron in the soil, it has an adverse effect on the formation and pollination activity of male male pollen. In the absence of zinc, white spots appear on the old seedling leaves, and they rapidly enlarge to form local white areas and necrotic spots. Shortening between the sections also tends to cause abnormal growth and development of the ear, leading to baldness. Http://
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