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The beginning of autumn is coming soon, and my friends are preparing to plant autumn vegetables. The problem arises when the seasons change and when the vegetables change crops. How to deal with the soil used for the last crop of vegetables? A lot of eggshell powder, etc., which are more difficult to decompose, have been decomposed for half a year, and now they are continuously releasing calcium. Would you throw away such soil? How much does it cost to buy soil to fill these containers again?
In fact, the used soil can be processed and reused, and it is very pleasant to reuse it. Today we will talk about how to rejuvenate the used soil and become more fertile. With the right method, growing vegetables can save money and harvest.
This is a pot of soil where broad beans have been grown. The roots of broad beans can increase the nitrogen content in the soil. Many people grow broad beans just for green manure. It would be a pity to throw away this kind of soil. Use it again.
However, the used soil cannot be used directly to grow vegetables. Because:
1. The nutrients in the used soil have been reduced, and various nutrients have become very unbalanced. Potting soil bought in general stores or prepared by yourself can be used for about 6 months. After that, the organic matter in it is almost consumed, and the beneficial microorganisms in the soil will enter a dormant state, causing the soil to become inactive and the quality of the soil to decline.
2. The used soil may contain pathogens. If it is used directly to grow new vegetables, it will be particularly easy to cause disease.
3. If the vegetables in the previous crop have been pests, there may be some eggs in the soil. Using such soil directly to grow vegetables is likely to attract pests unconsciously.
4. The potting soil has been planted in a container for a season, and the soil has become hard and compacted. There are often some cracks in this kind of soil. When watering, the water will flow directly along the cracks, and it is difficult to irrigate the soil. It is difficult to grow new vegetables in hard, unevenly wet soil.
Therefore, before using the planted soil, it must be treated to restore the health and vitality of the soil. Only when the soil is healthy can healthy vegetables be grown.
There is less soil inside. Before planting broad beans, the soil inside was only about 4 cm away from the mouth of the flowerpot. Now it is about 10 cm away. Where did the soil go?
1. All the nutrients that plants need come from the soil in this flowerpot-the seedlings that were just transplanted are so small and grow so big later. During the growth of plants, many nutrients are taken away from the soil.
2. As time goes by, the soil is sinking due to gravity, becoming closer and tighter.
We deal with the used soil in three steps, the method is very simple.
One, take out the dry plants and big roots, and break the soil. First, pour this pot of old soil into a larger container. The bottom layer of moss in the soil is used to cover the drainage holes of the flower pot. At the same time, these moss can also absorb a lot of water, which can be absorbed by plants when there is water shortage. use. Crush all these clumps of moss. There are broad bean roots in the soil. There are many such roots and they are evenly distributed in the soil. Crush all the soil so that the fine roots can be placed directly in the soil. Broad beans are green manure. Take out these dry stems and put them aside. Continue to break up any large pieces of soil to make the soil loose and breathable. It doesn't matter if these moss are inside, so take them out first and put them aside. There is also a pot of soil where roses were planted five years ago, and now it is covered with weeds. Because the rose inside had been black spot, it has been kept in the corner and is only used now. Take the weeds out and put them aside, and the soil inside is broken.
2. Disinfect the soil and kill insect eggs.
There are three commonly used methods:
1. Turn over the sun. Dilute the soil, spread it out, and expose it to direct sunlight. The thinner the soil, the better, and the easier it will be to dry. Expose in the sun for about a week, just two or three days in summer. Turn these soils every day so that the underneath can also be exposed to the sun. Ultraviolet rays in the sun can kill pathogens and eggs in the soil.