Poinsettia cultivation points

First, from planting to harvesting the entire cycle of growing poinsettia, the first and most critical issue is that the quality of the matrix is ​​too poor to place all varieties at the same time. Fertilizer solution and soil analysis Plant growth regulators need to be used early. Once the growth of poinsettia begins, it is necessary to start weekly application of plant growth regulators in order to prevent the phenomenon of tissue softening and nuclear growth in the stem of the first group.
To ensure adequate light (2500 feet early candlelight, late 4000-5000 feet candlelight)
To increase the nighttime temperature as much as possible. Second, from the topping to 5-6 weeks after the seedling stage/plant spacing adjustment. Growing 7-8 leaves from the seedlings is topping, and finally get 5-6 fully developed lateral branches.
If the seedlings are poorly branched, the picking is to be as high as possible. The picking is to remove the top leaves at the same time.
1. The lateral branches of the upper part develop slower than the lower ones, and the crown of the final flower will be more orderly;
2, this can improve the light level of the lower lateral branches, accelerate the development of the lower lateral branches, at the same time, the main stem of the pitch will be shorter and more robust.
3. Lateral branches do not grow due to competition for light, so lateral branches grow in an upright manner.
Avoid premature spacing adjustments to provide adequate lighting conditions to avoid interference and night temperatures above 21°C
(Otherwise it is easy to cause inconsistent flowers.)
To ensure that the calcium supply is adequate (the calcium level in the soil should be kept at 150ppm, and the leaf should be between 1.2 and 2?)
Comprehensive soil analysis should be performed at least two weeks (EC value should be maintained at 1.6-2.2, pH should be maintained at about 6.0 (extraction value))
Night temperature should be kept at 20°C
The growth regulation is to be performed once a week for 30 times of total nitrogen fertilizer. The ammonia nitrogen fertilizer should be used to control the plant height using some kind of chart trajectory system. Trials should be repeated when using insecticides. 3. From the first adjustment of plant spacing to the end of production, 3 - 4 weeks In order to allow the plants to grow into the ideal v-shape, when the plants grow to each other in the main street, the plant can be adjusted to provide sufficient light (ideally 4000-5000 feet candlelight)
Spraying calcium chloride (only reduce the incidence of sepal burning)
Keep night temperatures at 20°C
To maintain good ventilation, the heat distribution of the total amount of nitrogen fertilizer should be 15 ? which should be ammonia nitrogen fertilizer IV. The final management of the final 3-4 weeks before the flower is shipped. If the light is strong and the temperature is high, the flower will be shipped. In the previous 3-4 weeks of production, shading treatment was needed to prevent the temporal lobe from softening and gradually reduce the amount of fertilizer, reduce the salt content, and use fresh water and large water to make the air dry and circulate before the flowers are ready for shipment. Pay attention to the observation of the roots. 5. The time spent on flowering after shipment of poinsettia into flowers and sleeves should not exceed 2 days (easily infected with gray mold, leaves turning yellow and leaves falling)
Keep the temperature during transportation between 14-16°C

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