Corn is boron-deficient, it is difficult to develop young leaves at the seedling stage, the leaf tissue is damaged, wide white stripes appear between the veins, the roots become thicker and more brittle, and the root tip cells are lignified; Less, male flowers degenerate, female ears can't develop normally, or even form empty stalks; later the ears are arranged with curved grains, the seed setting rate is low, and the ear tops often turn black. Formation of bald tips or few seeds.
Corn lacks zinc, which affects the synthesis of chlorophyll. The growth of corn is hindered at the seedling stage, the leaves of the plant become smaller, and the plant dwarfs. This causes white corn seedlings, and at the flowering and pollination stage, zinc also plays a role in many enzyme reactions, because zinc also has vitality to pollen. It has a great impact. Therefore, zinc deficiency will cause poor fertilization and pollination of corn, resulting in lack of grain and baldness.
Prevention methods
1. Application of base fertilizer: when sowing corn, mix 1 kg + 1 ~ 2 kg of borax zinc sulfate with compound fertilizer per mu and compound fertilizer, which is the most economical and most effective method, basically can meet the whole corn Needs during the growing period.
2. Leaf spraying: in the jointing and flowering and pollination periods of corn, spray with foliar fertilizer containing boron and zinc, or spray directly with 0.5% zinc sulfate solution or 0.2% boric acid solution, usually once every 10 days , Continuous spraying 2 to 3 times can effectively prevent poor pollination of corn, problems such as less seeding and baldness.
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