In the delicate art of orchid conservation, foliar fertilizer spraying, with its unique fast and efficient characteristics, has become a key part of promoting the vigorous growth and gorgeous bloom of orchids. From nitrogen, phosphorus and potassium compound fertilizers to potassium dihydrogen phosphate, and then to trace element fertilizers, choosing the right foliar fertilizer and applying it scientifically can not only meet the needs of orchid growth, but also stimulate its inherent potential. This article provides an in-depth analysis of the importance of foliar sprays, fertilizer selection and application techniques, and provides a detailed fertilization guide for orchid lovers.
1. The importance of foliar fertilizer spraying
Orchid roots are unique in that they rely on symbiosis with microorganisms in the soil to absorb nutrients, a process that is relatively slow and inefficient. Especially when the root system is underdeveloped, damaged or the potting soil environment is not good, the absorption and utilization effect of root fertilization is often greatly reduced. Foliar fertilization is an effective way to supplement this. Foliar fertilizer can be directly absorbed through the leaf stomata of orchids, quickly replenishing the nutrients needed by plants, and promoting the growth and flowering of orchids.
Second, the choice of orchid foliar spray
1. Nitrogen, phosphorus and potassium compound fertilizer
Nitrogen, phosphorus, and potassium are a large number of elements necessary for plant growth and play a vital role in the growth of orchids. Nitrogen fertilizer promoted leaf growth, phosphorus fertilizer promoted flower bud differentiation and flowering, and potassium fertilizer enhanced plant stress resistance. In the growth period and flower bud differentiation stage of orchids, nitrogen, phosphorus and potassium compound fertilizers can be selected for foliar spraying. However, it should be noted that nitrogen fertilizer should not be too much, so as not to cause orchids to grow and not easy to flower. At the same time, the ratio of compound fertilizer should be adjusted according to the specific growth stage and needs of orchids.
2. Potassium dibasic phosphate
Potassium dihydrogen phosphate is known as the "star product" in orchid foliar spraying. It is rich in phosphorus and potassium, which can significantly promote the flower bud differentiation and flowering process of orchids. Especially when the orchid is about to sprout, spraying an appropriate amount of potassium dihydrogen phosphate can effectively prevent the occurrence of the phenomenon of pinching arrows and make the orchid more beautiful. In addition, potassium dihydrogen phosphate can also enhance the stress resistance of orchids and improve their resistance to pests and diseases.
3. Trace element fertilizer
In the process of growth, orchids need a certain amount of trace elements, such as iron, manganese, zinc, copper, etc., in addition to a large number of elements such as nitrogen, phosphorus, and potassium. Although these trace elements are not required in large quantities, they are equally important for the growth and flowering of orchids. When orchids have symptoms of trace element deficiency (such as leaf yellowing, slow growth, etc.), targeted trace element fertilizer should be selected in time for foliar spraying to supplement the missing nutrients.
3. Precautions for foliar fertilizer spraying of orchids
1. Temperature and humidity control
In foliar spraying, temperature and humidity are important factors affecting the absorption effect of fertilizer. Foliar fertilizer should not be sprayed in hot and dry weather, so as not to evaporate quickly and lose the effect. It is generally recommended to spray in the morning or evening, when the temperature is moderate and the humidity is high, which is conducive to the absorption of fertilizer by the leaves. At the same time, the leaves should be kept without water for a period of time after spraying, so as to avoid long-term water retention and leaf rot.
2. Concentration control
The concentration of foliar fertilizer must be low to avoid burns caused by high concentration fertilizer. When preparing foliar fertilizer, it should be diluted according to the proportion on the product manual, and purified water or soft water should be used as much as possible to avoid the influence of impurities on the leaves. When using it for the first time, you can reduce the concentration appropriately and observe the reaction of the plant before making adjustments.
3. Where and how to spray
The back of the leaf is more efficient at absorbing nutrients, so the spray should focus on the back of the leaf. At the same time, spraying with a fine mist spraying can can ensure that the fertilizer is evenly distributed on the surface of the leaves, improving the absorption efficiency. Avoid using high-pressure water guns or dumping fertilizer directly on the leaves, causing local concentrations to be too high.
4. Choice of growth period
Foliar sprays should be chosen according to the growth period of the orchid. Foliar fertilizer spraying at the growth stage and flower bud differentiation stage had the best effect. During the flowering and dormant periods, it is not advisable to spray too much fertilizer to avoid unnecessary burden on orchids. In addition, newly transplanted orchid seedlings should not be sprayed with foliar fertilizer immediately after potting, and should wait for them to slow down the seedlings or potted and sprout before spraying.
5. Filtration and cleaning
The fertilizer should be filtered before foliar fertilizer is sprayed to remove impurities and undissolved particles. It is also important to keep the watering can and sprinkler head clean at the same time to avoid impurities that can damage the orchid leaves. Regular cleaning of the watering can and spray head ensures effective spraying and a longer service life.
PS: Foliar spray fertilizer is very important for orchids, choose nitrogen, phosphorus and potassium compound fertilizer, potassium dihydrogen phosphate and trace element fertilizer, and apply it as needed. Pay attention to the appropriate temperature and humidity, and spray in the morning and evening; control the concentration of fertilizer to avoid burning the leaves; When spraying, focus on the back of the leaf and spray evenly with a fine mist spraying can; According to the reasonable fertilization of orchid growth stage, newly transplanted orchids need to be sprayed after seedlings; Filter the fertilizer before spraying and keep the sprayer clean.
The following is a strong fragrance orchid from Hubei, the fragrance is the ceiling in the orchid, natural planting, cold and drought resistance, non-greenhouse seedlings and hormone seedlings, easy to raise and easy to flower, put a pot at home, the house is full of incense, interested flower friends can click in to learn more about it.
Hubei fragrant orchid is easy to raise and easy to bloom ¥69.9 Buy