Recently, the vegetables in the early autumn have been planted one after another. Many seedlings have developed poor growth after planting. The most prominent performance is that the root system is difficult to lay down. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Tetanus Vaccine,Hepatitis B Vaccine For Adults,Tetanus Booster,Td Vaccine FOSHAN PHARMA CO., LTD. , https://www.fospharma.com
The focus of vegetable planting is to promote root growth. Once the root system is poorly grown, it is not conducive to the cultivation of strong trees. So, what are the reasons why the root system is difficult to lay down after the current vegetable planting?
Environmental change causes slow adaptation
At present, the seedlings used for vegetable farming are factory-based seedlings. The seedling trays are all seedling substrates. The matrix is ​​characterized by good water permeability and permeability, the root system grows rapidly in the matrix, and there is a set of control for the nursery environment in the nursery field. Strict management requirements, so the seedlings are basically grown in a relatively ideal environment.
The environment of the greenhouse where the seedlings are planted is completely different from the environment of the nursery field. The soil environment of various harmful microorganisms and seedlings is planted. The roots of the seedlings after planting are transplanted from the seedling substrate to the soil at once, which requires a process of gradual adaptation. Once the soil environment deteriorates severely, the roots in the seedling substrate can not be soiled for a while, so the roots of the seedlings are difficult to lay down.
The longer the greenhouse is planted, the worse the soil environment will be, and there will be many more and more bad problems. The vegetable seedlings after planting will cause poor root growth due to the huge environmental changes from the substrate to the soil. . A healthy and balanced soil environment is the basis for the smooth rooting of vegetable seedlings after transplanting.
Fertilizer is too concentrated
When the amount of manure is large, if the rotary tiller is used to turn the ground, in the case where the depth of ploughing is shallow (not more than 20 cm), a large amount of fertilizer is concentrated in the soil layer of 0-20 cm on the surface, then this is for the vegetable root system. Will have a very big impact. Because the fertilizer is too concentrated, the soil solution concentration will be too high after the water is sprayed, and the roots will be separated in the high concentration soil solution, resulting in water shortage, which eventually leads to root death. Therefore, it is recommended that the depth of ploughing of the vegetable farmers should be more than 30 cm, which can ensure the uniform distribution of fertilizer in the soil, and can break the bottom of the plow and reduce the danger of excessive concentration of fertilizer.
Surface temperature is too high
The soil temperature suitable for root growth is between 20-22 °C. In summer, the surface temperature can reach above 30 °C under direct sunlight. The high soil temperature will accelerate root respiration and premature aging. Moreover, the excessive temperature of the soil accelerates the evaporation of water, which is not conducive to the growth of roots.
Therefore, proper shading should be carried out after the planting of the vegetables, not only to reduce the transpiration of the leaves, but also to keep the soil temperature in the conditions suitable for root growth. In addition, the poor growth of the roots of the seedlings itself is also the reason why it is difficult to take root after planting. After the seedlings, the growth of the roots of the seedlings should be carefully observed. The strong roots are white and developed, and the best for the root hairs and yellowing and browning. No need to.