Understanding of fertilizer

In order to promote the better growth of orchids, in addition to proper sunshine, moisture and ventilation, it is also necessary to provide the right amount of fertilizer, which is more conducive to vigorous growth and easy to conceive flowers. In order to meet the needs of orchids, it is better to apply complete fertilizer and have a full understanding of the fertilizer elements, which are listed as follows:

1. Nitrogen can promote the growth of stems and leaves. Generally speaking, the application of nitrogen fertilizer at the initial stage of growth can promote growth, and the second half can increase the protein content in the body. If the application of nitrogen is too much, the stems and leaves will grow, and the tissue is weak, but it is not easy to produce flowers, such as excessive fertilization, it is easy to cause root rot. It is more abundant in oil crops such as bean cakes and nitrogen sulfate.

2. Phosphorus is one of the essential nutritional elements in plant growth. It plays an important role in the metabolism of carbohydrate, protein and fat, and can promote the development of root system and the development and formation of reproductive organs. The content of superphosphate is the highest in bone meal, fish fertilizer and inorganic fertilizer.

3. Potassium is an important element to make the plant upright and move regularly, and it can also increase the resistance of the plant to various diseases. If lack of potassium, the plant becomes shorter, when the lack of potassium is serious, the leaves are prone to scorch, and even die.

4. Calcium is an essential element to make up the cell wall and make the cells move regularly. Such as lack of calcitonin, flower development is blocked, and stems and leaves are abnormally twisted. The contents of calcium nitrate and calcium phosphate are the most in animal bones, eggshells and chemical fertilizers.

5. Magnesium is a part of chlorophyll, and it is necessary to make nutrients. If lack of magnesium, the old leaves are easy to turn yellow and the plant growth is not exuberant.

6. Sulfur is one of the components of protein. If the lack of sulfur, the root development is blocked, due to poor root development and affect the normal growth.

Iron is also part of the composition of chlorophyll. Lack of iron can turn young leaves yellow.

8. Trace elements mainly refer to manganese, copper, boron, zinc, etc., which are very little in plants. They are a kind of stimulating elements, which directly affect flowering and color. The lack of these trace elements can make the plant blossom unbeautiful and grow into abnormal phenomenon.