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Reasons for the slow growth of bulbils: unsuitable potting soil, diseases and insect pests, etc

Bulbil is a kind of foliage and flower viewing plant widely used in indoor and outdoor cultivation. It has gorgeous and peculiar flowers. Its shape is like a flower ball and a wasp's nest, which is very popular. Before that, we have introduced the causes of bulblet elimination and precautions for bulblet cultivation. Recently, a flower friend told Xiaobian that there was no bud in her family's orchid. There was no bud at all! Hua you said that her family's ball orchid grows too slowly. What is the reason for the slow growth of ball orchid? Let's read on! the reason why the bulb orchid grows slowly: 1. The pot soil is not suitable, and the bulb orchid is relatively selective to the pot soil. Once the pot soil is not suitable, it will be in a dormant state and will not die, which is the most common situation. The potted pot soil is better with loose and fertile slightly acid humus, which can be made up of peat soil, sand and vermiculite, and added with appropriate amount of superphosphate as base fertilizer.

2. Root system problem. We all know that bulbil belongs to a plant that is very easy to root. Its root system has strong regeneration, but bulbil's root system is very weak. I found that once bulbil's root system is damaged, the growth of new roots will be blocked, or there are only a few new roots. That is to say, once there are a small number of rotten roots under bulbil, the new roots will not grow, even if they grow, they will not meet the growth needs Lan also remained stagnant. ball orchid grows slowly

3. Water supply problem. This problem has been around the small braid for a long time. Before the small braid, it used bluestone, bark, rotten leaf soil, etc. during the planting process, it was found that a lot of water was poured, and the lower part of the basin was still dry. After pouring out the basin, it was found that the root under the ball orchid was very dry, even without any water and gas. It occurred to me several times that there was a water channel in the basin, and the water poured out of the basin bottom quickly through the water channel, while the plant materials were still very dry. And the soaking basin is very laborious, so it is easy to stagnate.

4. There is disease or insect damage in the root. If there is nematode or insect damage in the root, it will also cause sluggish growth. If root nodule (scar after insect bite) is found in the root, the best way is to cut and root again, and insecticide is needed. Scale insects will stop growing when they grow on the roots, and will die when they are serious.

5. Weak seedling, if it is weak seedling, it needs a process to be strong, and the natural cycle will be long. the ball is growing slowly

Expand knowledge: 1. Watering and fertilizing

It is advisable to keep the soil in a moist state, but the water in the basin should not be accumulated, and the water content should not be excessive, so as not to cause root rot. however, when the environment is too dry, the leaves will lose luster, affect the aesthetic feeling of the leaves, and then affect the formation of flower buds. Even if flower buds grow, they often cannot open or shorten the opening time. Therefore, in summer and autumn, the weather is hot and dry, and the watering should be sufficient. In addition to the watering, we should also pay attention to increase the air humidity. We should often spray fog water on the leaf surface, cool and moisturize it, and increase the humidity of the leaf surface and the surrounding environment to facilitate its growth. In autumn and winter, the growth is slow, the water consumption of stems and leaves is less, the basin soil should be slightly dry, and the watering times can be reduced to once every two weeks.

Bulblet is suitable for humus soil with long-lasting fertilizer effect and good drainage. Due to the addition of a certain amount of compound fertilizer as the base fertilizer in the upper basin, it needs less fertilizer at ordinary times. In the growth season, it is better to apply a thin fertilizer water combined with nitrogen and phosphorus once or twice a month, rather than a thin one. In the period of vigorous growth, the decomposed organic fertilizer solution can be applied once in 15-20 days. In autumn, when the weather becomes cool and cold, the amount of water and fertilizer should be reduced gradually.

2. Light temperature

Ball orchid like astigmatism, like half Yin environment, resistant to shade, avoid direct sunlight. In summer, it is necessary to move to the shade to prevent the leaves from being burned by strong light, which will cause the leaves to lose green and turn yellow. In serious cases, it will cause the leaves to fall off and affect the viewing effect. If you put it in the place where the light is insufficient for a long time, the color of the leaves will be light and the flowers will be less but not bright. The suitable temperature for growth is 15-28 ℃, and it grows well under high temperature. In winter, it should be dormant in cold and slightly dry environment, and the overwintering temperature should be kept above 10 ℃. If the temperature is lower than 5 ℃, it is easy to be damaged by cold, causing defoliation and even whole plant death. The ball orchid in

3. Flowering management

After summer, more P and K fertilizer should be applied, and some liquid fertilizer with a little more P should be applied before the buds bloom. For example, 0.1% solution of potassium dihydrogen phosphate can promote the autumn flower opening, and it needs 3-4 hours of sufficient sunlight to bloom every day. For the plants with buds and flowers in bloom, do not move the flowerpot at will, or it will easily cause falling buds and flowers. When flowering, it can be seen that there are 3-4 inflorescence peduncles and umbels in the axils of leaves. Each group of flowers can bloom for more than 10 days. After withering, the flowers and peduncles will drop by themselves, leaving the inflorescence and peduncles. After a period of time, the flowers will continue to sprout. The flowers can bloom to the middle of October in succession.

4. Pest control

Sometimes, leaf spot and powdery mildew occur, and 50% carbendazim WP (1000 times) or 70% mancozeb WP (700 times) is used to spray at the beginning of the disease. The pest is harmful to the scale insects. 25% thiazidone wettable powder 1500 times can be used for spraying.