What problems need to pay attention to pineapple production?

At present, the common domestic pineapple is Gentian, Yangko genus, genus, Tillandsia, frame pineapple and so on. Its leaves are long and narrow, and most of the leaves are serrated. The types of flowers are rich and varied, and the leathery leaves show a variety of changes due to their variety. Flowers and leaves seem to be coated with a layer of waxy, soft and hard, shiny. The base leaves often nestle closely together and form an outwardly extending rosette, as if it were a bucket, which can store water.

Cultivation management should pay attention to the following aspects: 1. The substrate prefers acidic media, and the pH is 5.5 to 6.5. 2. The temperature is adjusted from 20°C to 28°C during the day and from 18°C ​​to 2l°C at night. The maximum temperature cannot be higher than 35°C, and the minimum temperature cannot be lower than 15°C. Seedling temperature should be controlled at 20 °C to 25 °C, it is strictly prohibited that the temperature difference between morning and evening. After planting for 3 months, the temperature can be adjusted to 18°C ​​to 28°C, and the temperature difference between day and night should be appropriately increased to facilitate growth. If the temperature is higher than 35°C, the plant will grow slowly, the flower shape will be small, and the flowers will have less branches. If the temperature is less than 10°C for a long time, the leaves and bracts may turn red, white, white, or discolored, and the diseased part may dry up and scorch. If the temperature continues to fall, the plant will die.

3. Humidity control The relative humidity at the seedling stage is controlled between 80% and 85%, and should be controlled between 75% and 85% after 3 months of planting. When the humidity is less than 50%, the blades will curl inwards or become incapable of stretching, and even the tips of the blades will be scorched. If the humidity is too high, brown spots will appear on the leaves, and if it is serious, it will appear rotten.

4. Light intensity The light intensity is controlled to about 15,000 lux during seedling period. Light intensity will affect the seedling speed. During other growth periods, the light intensity should be controlled at about 18,000 lux.

5. The EC value of water and fertilizer management water should be controlled below 0.3 and pH 5.5 to 6.5. The ratio of nitrogen, phosphorus and potassium is 1 to 0.5?1, and the content of magnesium fertilizer is 12%. Pineapple is very sensitive to boron, and even a trace amount of boron will cause the pineapple to produce a burn-in phenomenon.

The EC value of the fertilizer solution varies depending on the stage of growth. When the new root length of the seedling grows to two centimeters, fertilization can be carried out regularly, and the EC value of the fertilizer liquid should be controlled at 0.5 to 0.8. After 4 months of planting, the EC value was adjusted to about 1.0. When the pineapple enters the reproductive growth stage from the vegetative stage and reaches the flowering state, the EC value increases to 1.2. The EC value after flowering is still 1.2.

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