Fertilization and selection of orchids

March is the season of spring flowers, the temperature generally rises obviously at this time, and the average temperature on sunny days is above 10 ℃ (the abnormal 25 ℃ appeared a few days ago, and then dropped to minus 3 ℃). The flowering period of Cymbidium is coming to an end in this year's extremely low temperature period. Most of the cymbidium is also in the big and small bell arrangement period, the farmer proverb says: "wake the tree Su, when the grass sprouts." The bud of the orchid has accelerated its growth (germination) in mid-March, so it has begun to increase the absorption of various fertilizers. At this time, when turning the basin to change the plant material, the basin mouth that did not apply base fertilizer or did not turn the basin to change plant material should be supplemented with base fertilizer in order to provide the nutrition needed for orchid germination and rooting in time. At this time, there are a variety of ways of fertilization, such as base fertilizer, topdressing, foliar spraying and so on. In the selection of fertilizers are also happy: organic fertilizer, inorganic fertilizer, micro-fertilizer, bacterial fertilizer, hormone fertilizer and so on.

At this time, the author is no exception is to bury "Zhixiang" and "active soil" 1 cm below the basin. When the dosage is 10 cm, 3-5 grains of "Zhixiang" are applied at the mouth of the basin, and 3-5 grains of "active soil" are applied near the false bulb; 8-10 grains of "Zhixiang" are applied at the mouth of the basin of 15 cm, and the corresponding application method of "active soil" is the same as before; at the mouth of 20 cm, about 15 grains of "Zhixiang" are applied, and the corresponding application method of "active soil" is the same as before. The purpose of this application of base fertilizer is that there is no basin mouth to turn the basin, which is better than the base fertilizer when changing the plant material, and other fertilizers should not be considered for the time being when the orchid needs it. Such as: after anthesis rejuvenation fertilizer and budding fertilizer and so on.

In view of this, we will talk about the selection and application of several fertilizers:

1. Organic fertilizer

Organic fertilizer is a kind of all-element nutrient fertilizer, which is rich in organic matter and trace elements such as nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese, zinc, copper, sodium, aluminum, lithium, strontium, chlorine, ammonia, sulfur, boron, molybdenum ore, nitrate, salt and so on. There are no more than two sources of organic fertilizer, one is made by Lanyou himself, they collect poultry, livestock and aquatic animal organs (lower kernels) and excreta, and plant benchmarking for retting, depending on the situation. some take as long as several years to use. This is one of the ancient methods of making organic fertilizer. Due to the existence of varying degrees of pollution and unpleasant odor, the proportion of production and use is now greatly reduced; another is the industrial production of commercial organic fertilizer with less peculiar smell, which can completely replace the advantages of self-made organic fertilizer. therefore, most indoor or balcony growers prefer commercial organic fertilizer. At present, commercial organic fertilizers are: Zhixiang (solid), Xishuo (liquid), Gaocui (liquid), fish essence fertilizer (liquid) and so on.

Organic fertilizer is characterized by slow absorption, long-lasting fertilizer effect and comprehensive nutrition, so it is widely used in the recovery period after anthesis.

II. Inorganic fertilizer

Inorganic fertilizer is a kind of chemical fertilizer without organic matter, such as Huabao series, Haokangduo, magic fertilizer, duomiao, secret, urea, calcium superphosphate, ammonia carbonate and so on. The speed of inorganic fertilizer is generally fast, and it is better to decompose and absorb easily and use organic fertilizer alternately.

Third, micro-fertilizer

Plants not only need nitrogen, phosphorus, potassium and other elements as nutrients, but also need to absorb a very small amount of boron, arsenic, manganese, copper, cobalt, molybdenum and other elements as nutrients. The so-called element deficiency is the deficiency of trace elements, and the supplement of micro-fertilizer is mainly foliar spraying. In fact, most micro-fertilizers can be obtained from organic fertilizers, resulting in the lack of micro-fertilizers is the consequence of relying on inorganic fertilizers. The use of mixed soil particles (orchid soil, fairy soil, peat soil, etc.) plus organic fertilizer in the plant material does not have any future problems, so there is no need to pay too much attention to the lack of micro-fertilizer.

4. Bacterial fertilizer

Bacterial fertilizer here specifically refers to a fungus symbiotic with orchids, which is now a synthetic biological agent such as the king of orchids and so on. Spraying and pouring can also be done.

Hormone fertilizer

The hormones mentioned here refer to the cytokinins used in orchids, such as various budding and root-promoting agents, Qianwang activating agents, and so on. These fertilizers are generally used to increase production. It can be sprayed and poured, and it is not easy to rely on use.

VI. Gas fertilizer

Gas fertilizer is a kind of carbon disulfide gas, which is generally used in greenhouse vegetables, and orchids have been tested recently. The utility model has the advantages of low dosage, low cost and quick effect.

The purpose of fertilization in orchid cultivation is to apply thin fertilizer frequently (such as all kinds of fertilizers are no exception). We encourage bold exploration in the use of fertilizers, and a proper balance will get half the result with twice the effort. Good orchid is our common theme, and we welcome orchid friends to discuss this issue. As the author's level is limited, please understand for the feeling!