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Lanyue popularizes plant chemical control technology through organizing or participating in industry conferences, providing face-to-face guidance to growers, and using the Internet and other media.
07
2023
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06
When fertilizing plants, why do you always dissolve the fertilizer in water and pour it into the farmland after it is prepared into a solution, instead of directly using it as nutrients?
First of all, let's understand the principle of fertilizer acting on plants. Crops are the protruding parts of root hair epidermal cells, which mainly absorb water through osmosis. An osmotic system is formed between the root hair cell solution of crops and the soil solution around the root system.Under normal circumstances, the concentration of root hair cells will be greater than that of soil solution, and water will become permeable through root cells in the soil, and the primary point will be cell fluid, thus the plant will form normal physiological absorption metabolism.On the contrary, if the concentration of soil solution is higher than the concentration of cell fluid, the water in the cell will diffuse to the outside of the cell, forming reverse osmosis, causing the cell protoplasm to lose water and separate from the cell wall, causing the cell to dry up, stopping the life movement and causing the plant to wither and die.If the fertilizer is not diluted with water and directly fertilized to crops, the fertilization concentration will be too large, especially in dry weather, which will lead to the concentration of soil solution greater than the concentration of root cell fluid, causing cell loss and separation of cytoplasm and cell wall, thus wilting the stems and leaves. Especially when the crops are in the seedling stage, the concentration of cell fluid is lower, and the fertilizer concentration is more likely to produce fertilizer damage.In our fertilization process, we should first grasp the amount and concentration of fertilization. Excessive application of base fertilizer will lead to fertilizer damage and large area wilting of crops. Attention should also be paid when spraying leaves. High concentration of foliar fertilizer will lead to the loss of protoplasm in leaf cells and the appearance of burnt edge leaves.When applying fertilizer with water, the paddy field is suitable for highly volatile chemical fertilizers, and it is necessary to maintain an appropriate shallow water layer in the field. Intertillage is carried out immediately after application, and chemical fertilizers are evenly applied. Pay attention to uniformity when applying chemical fertilizers. When necessary, the appropriate amount of soil and fine sand can be mixed together for application.Therefore, fertilization should be based on the weather, the specific growth of crops, the type of fertilizer reasonable use, adhere to the principle of appropriate light but not thick, to prevent crop fertilizer damage.
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