Flowering technique of Phalaenopsis

In order to provide potted Phalaenopsis flowers to the market during New Year's Day and Spring Festival, Rizhao, Shandong Province

City Garden Bureau, Rizhao City Agricultural High-tech Demonstration Park for 3 years of Phalaenopsis flower promotion technology

A set of technical regulations has been systematically summarized.

production facilities

Improved solar greenhouse equipped with fan coil heating, fan wet curtain and external

Shade, cooling, humidification and other necessary temperature and humidity control equipment.

technical measures

temperature control

(1) Day and night temperature: During the vegetative growth period, the daytime temperature is controlled between 26℃ and 28℃.

The maximum temperature shall not exceed 32℃; the night temperature shall be controlled between 20℃ and 23℃, and the minimum temperature shall not be lower than 15℃.

(2) High temperature treatment: one month before low temperature treatment, the daytime temperature is 28℃~30℃,

Night temperature 20℃~23℃, combined with enhanced light, promote plant accumulation of nutrients, so as to be better

The earth transforms into reproductive growth.

(3) Low temperature treatment: 4~5 months before the planned flowering stage, the temperature drops during the day.

At 25℃, the night temperature dropped to 18℃. At this temperature, Phalaenopsis changed from vegetative growth to growth.

The flower buds begin to form and last for 1~1.5 months, completing the whole flower bud formation.

Process. When the pedicel grows to about 10cm, the low temperature treatment is terminated. If prolonged cryogenic treatment

Time, will delay flowering; if the early end, the stem growth will become thin,

Therefore, it is necessary to better grasp the time of low temperature treatment.

(4) Temperature treatment of pedicel elongation and bud development: day and night temperature is (25℃).

~28℃)/(18℃~20℃). In this temperature environment, the pedicel can be thickened and

The flower bud develops quickly and hypertrophy, the color is good, when waiting for the stalk to pull out the flower bud, pay special attention to the temperature.

Change, can not be too fast, otherwise easy to cause bud drop phenomenon. When flowering, the temperature can drop day and night

As low as 25℃/18℃.

humidity control

Relative humidity should generally be controlled at 60%~80%, humidity is too large easy to infect diseases,

Too little humidity is bad for orchids. Under the condition of good ventilation in greenhouse, the daytime is relatively

Humidity in about 70%, about 80% at night, conducive to the rapid growth of Phalaenopsis.

(1) Ways to increase greenhouse humidity: a. Do not make concrete floors except walkways.

It is better to use mud surface or sand ground;b. spray water or irrigation on the ground;c. spray humidification.

(2) Methods to reduce humidity: a. Natural ventilation or forced ventilation;b. Temperature rise and fall

Wet.

(3) It is necessary to pay attention to the fact that do not pour a lot of water into the pot to increase humidity.

The sample is easy to cause rotten roots; the humidity change in the greenhouse should not be too fast, otherwise it is easy to cause falling.

bud phenomenon.

lighting control

Phalaenopsis has strict requirements for light, and the light cannot be too strong or too weak.

Sunburn, tissue injury in mild cases, yellowing of leaves, greyish white in severe cases, and

Anthracnose; light too weak, photosynthetic capacity reduced, resulting in excessive growth of leaves, weakness

Drooping, not conducive to flower bud differentiation, flowering number is small. General light intensity in 15000~20000lux,

When high temperature treatment was conducted before flower induction, the light intensity should be increased to 20000~25000lux to make seedlings

Accumulate more nutrients, better switch from vegetative to reproductive growth, and promote flowering

Neater, better quality.

Water and fertilizer control

Cultivation of Phalaenopsis requires the application of appropriate fertilizer at the appropriate time.

Generally, compound fertilizer with N∶P∶K ratio of 20 ∶ 20∶ 2000 times was applied.

2 000 times of compound fertilizer with N∶P∶K ratio of 9∶45∶15 was applied once or twice

After the pedicel grows out, apply 2000 times solution of compound fertilizer with N∶P∶K ratio of 10∶30∶20;

When the pedicel grows to about 10cm, N∶P∶K = 30∶10∶10 can be sprayed.

Fertilizer 2000 times liquid; stop fertilizing when the flower bud is mature and flowering. The relationship between water and fertilizer is twice

Fat 1 water. Orchids like to dry, avoid wet, to see dry see wet, do not irrigate is already, irrigate is watered thoroughly.

When the root tip is found to have yellowing phenomenon or the new root touches the surface of the weed, it will shrink and cannot extend.

When the situation, should first observe whether too much water or fat injury, and then according to the situation to cut off water or

washing treatment. EC value and pH value should be measured every other day after fertilization. The suitable pH value is 5.5~6.5.

EC value lower than 1.6mS/cm, fertilizer concentration should not be too large, should be thin fertilizer frequently.