What are the precautions for greenhouse cultivation of water bamboo?
Water bamboo is an aquatic vegetable, so it is generally cultivated in the south. With the development of agricultural technology, it is now not only cultivated in the water-rich south, but can be cultivated all over the country. Greenhouse technology can also speed up the growth of water bamboo, but some issues still need attention. Let's take a look together below.
1. Fertilizer and water management
On the basis of applying sufficient base fertilizer and during the seedling stage, strong-stem fertilizer should be applied promptly after thinning the seedlings in early April, which helps make the stems thick and sturdy; generally 30 kg of imported compound fertilizer is applied per mu. When one third of the plants begin to form the swollen stem, and the leaves are still relatively tender, 20-30 kg of compound fertilizer can be applied per mu to ensure the nutrients water bamboo needs later. The management in March and April mainly involves furrow irrigation, and a good irrigation water layer should be established; after the swollen stem forms, the water layer should be deepened to 15 cm to improve the quality of the water bamboo.
2. Preventing pesticide damage and fertilizer damage
In the process of greenhouse cultivation, the most important thing to pay attention to is preventing pesticide damage and fertilizer damage, so volatile fertilizers such as hydrocarbon and urea, as well as any chemical herbicides, are not allowed in the greenhouse. Only an appropriate amount of ternary compound fertilizer is used to prevent chemical fertilizers and herbicides from burning the seedlings. In addition, after fertilizing, attention should be paid to ventilation to release the gases given off during fertilizer decomposition and promote better growth of the water bamboo.
3. Preventing high-temperature sunscald
In March, ventilation in the greenhouse is extremely important. During the day, the film at both ends should often be opened for ventilation, while at night it should be sealed to keep warm. When the daytime temperature reaches 18 degrees and the greenhouse temperature reaches about 32 degrees, the film at both ends of the greenhouse should be opened promptly for ventilation, which benefits the growth, development and health of the seedlings. When the daytime temperature reaches above 20 degrees, part or all of the greenhouse film should be removed promptly, and the greenhouse temperature should preferably be kept below 30 degrees to prevent the seedlings from being burned by high temperatures.
4. Preventing freezing
In early spring, the temperature changes drastically. There are two films on both sides of the greenhouse, and the skirts on both sides must be adjusted. After entering April, the temperature becomes stable, and all the films can then be removed. However, if the films are removed too early, the water bamboo will be damaged by cold air, and the harvest period will also be delayed, so special attention must be paid to this.
The above is an introduction to the precautions for greenhouse cultivation of water bamboo. I hope it can help you. To learn more related knowledge, please follow us.