According to experiments, maize is more sensitive to zinc. Seedlings lack zinc, leaves chlorosis, pale, commonly known as "white bud disease"; zinc deficiency in the middle of growth, the lower half of the new leaf was pale yellow to white, pale yellow spots or lack of green spots in the vein surface, A white or yellow tissue broad band or necrotic spot is formed between the midrib and the edge, commonly known as "flower white leaf"; zinc deficiency in the middle and late growth period, the ear is difficult to extend, the silking period and the tasseling phase are delayed, and the yield and quality are seriously affected.
Applying zinc fertilizer to corn can promote cell respiration and promote the formation of auxin and the synthesis of chlorophyll in plants. Can increase corn plant height, ear length and kernel weight, and can mature earlier. Zinc fertilizer can generally increase production by 10-15%.
The technology of applying zinc to corn is simple and easy. The following methods can be adopted: First, adding appropriate amount of zinc fertilizer to the nutritious bauxite for seedling cultivation is conducive to the cultivation of strong seedlings. The second is the use of base fertilizers. Each acre is fully mixed with 1.5-2 kg of zinc sulfate and organic fertilizer. The third is to add zinc fertilizer into clean water after the transplanting to determine the root water. The fourth is to spray outside the roots, spray 0.1-0.2% zinc sulfate solution, spray fertilizer 50-60 kg per acre, spraying 2-3 times, can play a significant role in increasing production.
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