What is fat? How did the fat damage happen? What are the prevention measures?
In the process of planting crops, the planters have applied a lot of fertilizers because of improper operation or lack of experience, or in order to increase crop yield and enhance crop resistance. However, due to excessive application of fertilizer, the crops are fattened, that is, vegetables are fertilized. More will lead to dehydration of vegetable root cells to produce fertilizer, so a reasonable method should be adopted in fertilization, followed by small series to talk about fertilizer control measures.
First, what is fat?
The fat damage is simply because in the process of planting crops, the amount of fertilizer is too much or the fertilization is too concentrated, causing visible damage to the crops, such as vegetable dehydration, burning seedlings, rooting, dead seedlings, leaf deformities, etc. The phenomenon is caused by fat.
Second, how does the fat damage occur?
There are three main reasons for the occurrence of fat damage: First, the quick-acting chemical fertilizer is directly applied to the main root part during fertilization, resulting in excessive concentration of soil solution and burning root; secondly, when spraying foliar fertilizer, high concentration of foliar surface Fertilizer causes the leaves of the leaf cells to lose water and the leaves are burnt; the third is to apply the organic fertilizer that is not fully decomposed. Although the organic fertilizer can meet the nutrients required by the plant, the application of the organic fertilizer that is not fully decomposed will make it not fully decomposed. The organic fertilizer continues to liberate heat in the soil, and also carries a large number of pathogens and parasite eggs, causing fat and disease to occur together.
3. What are the prevention and control measures for fertilizer damage?
1. According to crop fertilizer regulation, soil fertilization characteristics, and fertilizer effect, scientific and reasonable fertilization should be measured before application and applied according to concentration. Nitrogen fertilizer can not be applied too much at one time, and the concentration should not be too high when spraying foliar fertilizer.
2. Add bio-fertilizer bio-fertilizer and increase the application of fully decomposed organic fertilizer.
3. Use the correct fertilization method to use the base fertilizer. Never apply the fertilizer directly to the soil surface. The depth of fertilization should be 5-10cm.
4, when the topdressing should maintain an appropriate distance from the crop plants, usually about 10cm from the root of the vegetable, immediately after the topdressing. When the fertilizer is sprayed on the foliage, the suitable concentration of various trace elements is generally 0.01%-0.1%, and the large amount of elements is 0.3%-1.5%.
5, fertilizer and seeds can not be directly contacted when applying fertilizer, can not be mixed with ammonium bicarbonate, superphosphate, urea, lime nitrogen and other chemical fertilizers to avoid burning or burning seedlings.
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