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The correct use of zinc sulphate can prevent the disease of fruit tree nursery, and is also a common fertilizer for supplementing crop zinc micro-element fertilizer, which can be used as base fertilizer and foliar fertilizer.
The effect of zinc sulphate:
1. Zinc can promote photosynthesis of crops:
Zinc is an obligately activated ion of carbonic anhydrase in plant chloroplasts, and carbonic anhydrase catalyzes the hydration of carbon dioxide in photosynthesis. Zinc is also an activator of aldolase, and aldolase is one of the key enzymes in photosynthesis.
2. Zinc can participate in the synthesis of auxin acetic acid:
Since zinc promotes the synthesis of tryptophan and serine, and tryptophan is the precursor of synthetic auxin, zinc indirectly affects the formation of auxin. In the absence of zinc, the auxin synthesis in the crops is reduced, especially in the buds and stems. The growth and development of the crops are stagnant, the leaves become smaller, the internodes are shortened, and the formation of small leaf clusters is a symptom.
3. Zinc can promote the synthesis of crop proteins:
Zinc is closely related to protein synthesis, which contains zinc, which is an essential enzyme for protein synthesis. At the same time, zinc is not only a component of the ribonucleoprotein, but also a substance necessary to maintain the structural integrity of the ribonucleoprotein.
4. Zinc is essential for stabilizing crop cell ribose:
Zinc deficiency in crops also reduces ribonucleic acid and ribosomes. In recent years. It was found that normal ribosomes contain zinc, which is extremely unstable when zinc is deficient, indicating that zinc is an essential component for stabilizing cellular ribosomes.
5. The impact of zinc on crop reproductive organs:
In the case of zinc deficiency, the tomato flower buds are long oval, and the epidermis of the sepals are sparse. With the growth of flower buds, the growth of anthers stagnated, the anther length was only about 1/3 of that of normal anthers. The style and ovary were slightly thicker than normal plants, but the flower buds could not be opened and began to fall off. Normal pollen grains could not be formed in the anthers.
Symptoms of zinc deficiency in crops:
When the crop is deficient in zinc, the growth is hindered, the plants are short, the internode growth is severely blocked, and the leaves are chlorotic or white. The new leaves are grayish green or yellowish white spots. The symptoms of zinc deficiency in vegetables are shortened internodes, dwarfed plants, chlorotic leaves, some leaves fail to develop normally, roots grow poorly, and fruits are less or deformed.
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