What fertilizer do orchids need, and what fertilizer is best for orchids

The essential chemical elements of orchids include a large number of elements (9 kinds of carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium and sulfur) and trace elements (7 kinds of iron, manganese, boron, zinc, copper, molybdenum and chlorine).

1. A large number of elements:

1. Carbon: Function: Participate in the metabolic process of all macromolecular substances in plants.

Deficiency symptoms: In the case of insufficient carbon**, the photosynthesis of plants is stunted, the plant grows slowly, and the tissues are not full.

2. Nitrogen: Function: Promote plant growth, increase yield, delay aging and other effects.

Deficiency symptoms: the plant is short, the leaves are yellow and thin, and the severe ones stop growing, and the old leaves wilt and die.

3. Phosphorus: Function: It mainly promotes the growth of plant roots, rapid flowering, and increases resistance and other physiological functions.

Symptoms of deficiency: slow growth, stunted growth, small young leaves, old leaves first dark green and then purplish-red.

4. Potassium: Function: An important element for the synthesis of sugars and transporting sugars. It can regulate the stomatal switch of plants, and is also an activator of some enzymes, which can increase the thickness of the cell wall and promote the formation of cellulose in the stem, which is the counterpart of hydrogen ions in photosynthesis.

Lack of symptoms: slow growth, thin stems, easy lodging, plant leaves are easy to dry and tip, old leaves are easy to yellow, brown spots appear on the surface, the maturity period is delayed, and the resistance to diseases is weakened.

5. Calcium: Function: One of the main raw materials for the construction of cell wall.

Symptoms of deficiency: new leaves lose green, old leaves are brittle, stems are weak, roots are browned, root tips die, flowers are easy to fall off, and they are vulnerable to pests.

6. Magnesium: Function: One of the elements that make up chlorophyll, promoting the process of photosynthetic phosphorylation.

Deficiency symptoms: It is more prominent on old leaves, with yellowish leaf margins, yellow mesophyll and green veins.

7. Sulfur: Function: It is a necessary component of some amino acids.

Deficiency symptoms: The plants are thin and slender, and the leaves are yellowish.

The biggest problem in family orchid farming is planting material, generally using sandy soil and pond mud (inferior ones), coupled with water every day, sediment and water, and the pot is not breathable, the result is that the roots rot and leaves are rotten, and eventually die. Any of the following three types can be used to solve the planting problem. 1. Use all bricks, use chestnut-sized bricks at the bottom of the pot 1 3 high, and use peanut-sized bricks after placing the orchid plant.

2. Use 30 clean coarse river sand, add 70 fresh wood bran, and use chestnut-sized bricks at the bottom of the pot 1 3 high. 3. The bottom of the pot 1 3 high with chestnut-sized bricks, after placing the orchid plant, use the Emeishan fairy soil with medium and small particles. Beginner orchids, should not use large pots, generally use 10 cm to 20 cm diameter of the cylinder pot or horn pot, each pot can plant three to five plants.

In addition to the use of wood chaff, the orchid is planted with bricks or Emeishan fairy soil, even if it is drenched every day, the water will also pour out, the pot does not accumulate water, there is both humidity and air, the orchid root can grow happily, and the orchid plant is also healthy. When using wood chaff seeds, care should be taken not to let the water damage the roots.

Raising orchids on the family balcony should be protected from exposure to the sun, strong winds, and frost. In this kind of weather, you have to put the orchid down on the balcony. It's okay to put it on the balcony base to bask in some sunlight. If there is no sunlight, it will not bloom.

For insect and disease control, pesticides can be used, diluted according to the proportion mentioned in the instructions, and the orchid leaves can be brushed with a new brush or directly drenched in the potion. The dilution ratio must be accurate, too concentrated and too dilute will affect the efficacy of the drug.

If you want to put fertilizer, you can use compound fertilizer granules or peanut bran powder to put on the edge of the pot, three to five grams each time, not too much, and should not be placed near the orchid head or orchid buds. Or buy orchid liquid fertilizer to spray the foliage.

Beginners should not buy high-end varieties of orchids rashly, so as not to suffer losses due to planting death. In the first year or two, plant ordinary varieties of orchids, three yuan a plant or several, ordinary varieties of orchids such as flowering generally have a fragrance, sometimes it will be very fragrant, Ye Zi also has a certain ornamental value, plant live and gain experience and then plant mid-range varieties of orchids, to be completely sure of the high-end varieties of orchids, so as to suffer less economic losses.

Do you need to fertilize orchids at home What fertilizer to apply to listen to what the little brother of orchid raising.

Inorganic fertilizer: Inorganic fertilizer, that is, chemical fertilizer, can be applied appropriately during the growth stage of orchids. Chemical fertilizers are mainly nitrogen fertilizer and potassium fertilizer, urea and potassium dihydrogen phosphate can be applied, urea solution can be diluted with water 150-200 times, the roots of orchids are watered, and potassium dihydrogen phosphate is diluted 200 times with water and the leaves are sprayed.

Organic fertilizer: Orchid flowers are mainly applied to organic fertilizer for a long time, such as cake fertilizer, fish bones, orange stalks, fallen leaves, grass, human and animal manure, etc., which can also add enough nutrients to orchids, and the fertilizer effect is relatively moderate. Organic fertilizer is mainly used as a base fertilizer, which should be sterilized and insecticidal, fully fermented, and mixed into the soil when potting to ensure good nutrient supply.

It can also be used as top dressing, which can be used to dig a pit in the soil around the roots of the orchid, apply fertilizer to it, and cover the soil.

Water-soluble fertilizer: Orchids can also apply water-soluble fertilizer, mix water-soluble fertilizer with water, and then water to the roots of orchids, water-soluble fertilizer can promote the roots to fully absorb nutrients.

Special fertilizer: When raising orchids, you can use special slow-release fertilizer for orchids, which is specially developed for orchids and can effectively promote the growth of orchid roots.

Sterilization and disinfection: When using organic fertilizer, orchids can be sterilized and disinfected in advance, which needs to be fermented first, and then steamed at high temperature to kill germs and insect eggs.

Thin fertilizer and frequent application: When applying fertilizer to orchids, we must insist on thin fertilizer and frequent application.