Plant growth must be conditional for daylight, water, temperature and nutrient elements as well as orchids. Fertilization is one of the important links in orchid cultivation. The quality of orchid growth has a lot to do with fertilization. Growing in the fertile, deep places of the mountain soil, the orchids are stronger than the orchids that grow in the thin areas of the soil. The experience of the growers also proves that fertilization can promote the growth of orchids. Therefore, fertilization is very necessary for the growth of orchids. However, orchids are most likely to be over-fertilized. It is better for beginners to apply extremely thin organic fertilizers to avoid damage to orchids due to "preferredness".
Generally, fertilization is carried out in the growing season, and every half month is poured. If it is too high in the summer (more than 30~C), it should not be fertilized. In addition to daily watering, it should be sprayed several times to the foliage. Frequent sprays can not only improve the growth environment of orchids, but also keep the foliage clean and reduce the chance of infection. When winter temperatures are low or cold currents occur, fertilization should be avoided.
Among the 16 nutrient elements, carbon, oxygen and hydrogen can be absorbed by air and water, and the remaining 13 elements must be supplied to orchid plants in the form of fertilizer. The introduction is as follows:
The three nutrients refer to the most needed components of nitrogen (N) called leaf fertilizer, phosphorus (P) of flower and fruit fertilizer, and potassium (K) orchid plant of root fertilizer.
Nitrogen (leaf): protein
[Insufficient]: Slow growth, weak strain, yellow leaves of old leaves.
[Excessive]: The leaves are thick and thin, the stems and leaves are weak, and the disease resistance is low.
Phosphorus (flower fertilizer): nucleic acid
[Insufficient]: The old leaves are small and dark green, and the petioles are reddish purple.
Potassium (root fertilizer): affects photosynthesis, affects enzyme activation, stomatal closure
[Insufficient]: The old leaves are green and the tip of the leaves turns white, and the yellow turns brown and necrotic.
Nutritional secondary elements: magnesium, calcium, sulfur
Magnesium is an important component in the formation of chlorophyll.
[Insufficient]: Yellow leaf whitening phenomenon of new leaves or top buds, elongation stops.
Calcium is an indispensable ingredient in strengthening cell walls.
[Insufficient]: The leaves of the old leaves are yellowed and then the leaves are severely browned and deciduous.
Sulfur is the main component of protein formation.
[Insufficient]: The situation is similar to nitrogen deficiency (more in young leaves)
Trace elements: Trace elements refer to the elements whose plants require less than the main elements. Although the demand for plants is low, these elements are indispensable components in plants. If they are lacking, they may cause sprout dysplasia, yellow. Symptoms such as growth and whitening. Therefore, the importance of these elements is further revealed. The main trace elements are iron, manganese, molybdenum, copper, zinc, boron and chlorine.
Iron: synthetic chlorophyll, transfer enzyme
[Insufficient]: The yellow leaf of the new leaf vein is yellow and white, and the midrib and the vein are green.
Manganese: photosynthesis.
[Insufficient]: Similar to iron.
Zinc: Enzyme system, nitrogen metabolism
[Insufficient]: new leaves yellowing, blade deformity.
Molybdenum: nitrogen-fixing enzyme and nitrate reducing enzyme.
[Insufficient]: Similar to nitrogen.
Copper: Chlorophyll, assimilation, respiration.
[Insufficient]: The new leaves are dark green and curled.
Boron: meristem growth and carbohydrate function and metabolism.
[Insufficient]: Leaf tip deformation.
Chlorine: promotes photosynthesis and regulates stomatal opening.
Generally, fertilization is carried out in the growing season, and every half month is poured. If it is too high in the summer (more than 30~C), it should not be fertilized. In addition to daily watering, it should be sprayed several times to the foliage. Frequent sprays can not only improve the growth environment of orchids, but also keep the foliage clean and reduce the chance of infection. When winter temperatures are low or cold currents occur, fertilization should be avoided.
Among the 16 nutrient elements, carbon, oxygen and hydrogen can be absorbed by air and water, and the remaining 13 elements must be supplied to orchid plants in the form of fertilizer. The introduction is as follows:
The three nutrients refer to the most needed components of nitrogen (N) called leaf fertilizer, phosphorus (P) of flower and fruit fertilizer, and potassium (K) orchid plant of root fertilizer.
Nitrogen (leaf): protein
[Insufficient]: Slow growth, weak strain, yellow leaves of old leaves.
[Excessive]: The leaves are thick and thin, the stems and leaves are weak, and the disease resistance is low.
Phosphorus (flower fertilizer): nucleic acid
[Insufficient]: The old leaves are small and dark green, and the petioles are reddish purple.
Potassium (root fertilizer): affects photosynthesis, affects enzyme activation, stomatal closure
[Insufficient]: The old leaves are green and the tip of the leaves turns white, and the yellow turns brown and necrotic.
Nutritional secondary elements: magnesium, calcium, sulfur
Magnesium is an important component in the formation of chlorophyll.
[Insufficient]: Yellow leaf whitening phenomenon of new leaves or top buds, elongation stops.
Calcium is an indispensable ingredient in strengthening cell walls.
[Insufficient]: The leaves of the old leaves are yellowed and then the leaves are severely browned and deciduous.
Sulfur is the main component of protein formation.
[Insufficient]: The situation is similar to nitrogen deficiency (more in young leaves)
Trace elements: Trace elements refer to the elements whose plants require less than the main elements. Although the demand for plants is low, these elements are indispensable components in plants. If they are lacking, they may cause sprout dysplasia, yellow. Symptoms such as growth and whitening. Therefore, the importance of these elements is further revealed. The main trace elements are iron, manganese, molybdenum, copper, zinc, boron and chlorine.
Iron: synthetic chlorophyll, transfer enzyme
[Insufficient]: The yellow leaf of the new leaf vein is yellow and white, and the midrib and the vein are green.
Manganese: photosynthesis.
[Insufficient]: Similar to iron.
Zinc: Enzyme system, nitrogen metabolism
[Insufficient]: new leaves yellowing, blade deformity.
Molybdenum: nitrogen-fixing enzyme and nitrate reducing enzyme.
[Insufficient]: Similar to nitrogen.
Copper: Chlorophyll, assimilation, respiration.
[Insufficient]: The new leaves are dark green and curled.
Boron: meristem growth and carbohydrate function and metabolism.
[Insufficient]: Leaf tip deformation.
Chlorine: promotes photosynthesis and regulates stomatal opening.
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