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What are the cultivation methods and precautions for Wannianhong?

Culture soil

Poinsettia likes loose, well-drained soil. Generally, 3 parts of garden soil, 3 parts of humus soil, 3 parts of leaf mold, 1 part of decomposed cake fertilizer, and a small amount of slag are used to mix.

Topping

3 weeks after transplanting, the roots have grown out and you can pinch the leaves. Leave 4-6 leaf nodes when pinching and raise the temperature to 28-30℃ during the day and 23℃ at night. Spray frequently to increase the humidity. Continue for about two weeks until you see buds growing. Then slowly lower the temperature to 25-28℃ during the day and the humidity should also be lowered. During this period, you can pinch the leaves a second time according to the uniformity and fullness of the plants, supplement nutrients, and combine with treatment with dwarfing agents.

temperature

Poinsettia likes warmth and is afraid of cold. When it is brought indoors in mid-to-late September each year, ventilation should be strengthened to gradually adapt the plant to the indoor environment. The room temperature should be maintained at 15℃ to 20℃ in winter. This is the period of bract color change and flower bud differentiation. If the room temperature is below 15℃, the flowers and leaves will develop poorly. After mid-December, when it enters the flowering stage, ventilation should be gradually increased.

illumination

Poinsettia likes sufficient light and is highly phototropic, so it is a short-day plant. It should get sufficient light all year round, especially during the bract color change, flower bud differentiation and flowering period. If there is insufficient light, the branches will grow too long, it will be susceptible to diseases, the flower color will be dull, and if it is placed in a dark place for a long time, it will not bloom and will shed its leaves in winter. In order to advance or delay flowering, the light can be controlled. Generally, 8 to 9 hours of light per day will be given, and it will bloom in 40 days.

Fertilization

Poinsettia likes fertile sandy soil. In addition to adding organic fertilizer and horse hoof slices as base fertilizer when potting or repotting, apply 5 times diluted and fully decomposed sesame paste residue liquid fertilizer every 10 to 15 days during the growing and flowering season. After autumn, you can also use 0.3% compound fertilizer once a week for 3 to 4 times in a row to promote bract color change and flower bud differentiation.

Watering

Poinsettia is not drought-tolerant or water-tolerant. Watering should be flexibly controlled according to the weather, pot soil and plant growth. Generally, watering should be done to keep the pot soil moist but not waterlogged. However, watering should be reduced after flowering. Watering should be done evenly to prevent excessive dryness or wetness, otherwise the lower leaves of the plant will turn yellow and fall off, commonly known as "falling off the feet", or the branches will grow unevenly.

prune

Around the Qingming Festival, dormant old plants should be repotted, old roots and weak branches should be cut off to promote the sprouting of new branches. During the growth process, the tops should be pinched twice, the first time in late June and the second time in mid-August. In cultivation, large amounts of fertilizer and water should be controlled, especially before the plants are set in autumn. When the branches are 20 to 30 cm long, they should be shaped and bent to make the plants short, the flower heads neat and evenly distributed, and improve the ornamental value.

Control strain

During the cultivation process, plant growth regulators are required to dwarf the plant height to achieve the requirement of consistent commercial flower height. In addition, it is also very important to maintain the consistency of day and night temperature during cultivation. It should be tracked and monitored at any time. When the temperature difference between day and night exceeds 3°C, 750 to 1000 ppm of dwarfing agent can be sprayed 1 to 4 times after pinching to inhibit the excessive growth of stems.

The entry comes from Baidu Encyclopedia

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The eel is a cold-blooded animal, and its body temperature changes with the external water temperature. The suitable living temperature is 15-30℃, and the most suitable temperature is 24-28℃. Under the suitable temperature, it eats the most and grows the fastest. It starts to hibernate in caves below 10℃. During the hibernation period, its metabolism is extremely low, it does not eat or move, and relies on the nutrients accumulated in the body to maintain life. When the temperature is above 32℃, its appetite also decreases, and it hides in the soil to avoid the heat. In the Jiangsu and Zhejiang areas, the growth period of the eel is from May to October, about 150-170 days, and the fastest growth is from June to August. The eel is slippery and good at escaping, especially when there is a lack of bait, or in thunderstorms, or when the water quality deteriorates, it is easy to cause a large number of escapes. When escaping, they swim quickly along the shallow water with their heads upwards, or jump out with their whole bodies. If there are brick walls or cement blocks around, they can hook themselves with their tails and then jump out. If there are holes in the embankment, drainage channels or drainage holes, it is easier for eels to escape. In serious cases, all the eels can escape, which is often an important reason for the failure of breeding. Therefore, when breeding eels, we must pay great attention to escape prevention from beginning to end. In addition, the preparation of feed is also very important, and the breeding amount should be determined according to the amount of feed.