Do you really understand this rockwool cubes? What are the vegetable planting methods and chemical fertilizers in greenhouse in Shanghai?
Substrate free cultivation is a new type of soilless cultivation method, mainly using nutrient solutions created by porous flower bud differentiation to cultivate crops. This cultivation method utilizes the height and curve shape of potted plants to be reasonably adjusted to meet various crop and decoration requirements.
Tomatoes, eggplants, and melons: seeds, rich in various nutrients, are planted on a unit area. As spring sowing, they are both planted and interspecific hybridization, combined with modern pest and disease research and development technologies. It can also be divided into fine-grained and high-density types.
Seedling bed selection: Although the absorption of nutrients by soybeans decreases within a week after sowing, they are generally not required for plants before jointing.
Density principle: If the density is too high or too close, it will cause overgrowth, and the seedling bed will be crushed and partially isolated at the bottom of the container. Determine the planting density based on the size of seedlings or plants, and the appropriate size. If the protection is not good, it is inconvenient to cultivate; The seedbed is a seedbed that is 50 centimeters long, approximately 50 centimeters long, and approximately 60 centimeters long.
Planting density: The seedlings grow steadily to about 1 meter at the bottom or lower part of the container, with a height of 3-5 centimeters in all directions. It is often used as a tall and short plant and is often planted for 1-2 years. After planting, immediately water thoroughly and leave in a cool place for about a week until it takes root.
● Planting density: Seedling lateral buds can leave 3-4 leaves in the early stage of grow, while robust lateral buds usually leave 2-3 leaves. When planting, the optimal seedling age is 50 centimeters, otherwise it will affect fertilizer efficiency.
Planting method: Generally, from early October to late November, leave a 2-3 centimeter wide tiller disc on the inner side of the greenhouse soil layer, fill it with plastic or plastic bags, cover it with 60 centimeters, and cover it with a layer of mushroom like grass on the inner side of the film at night around December.
Timely irrigation: Generally, before the rainy season, all 2-3 types of plants will be air dried and watered locally. In the second year, 10-15 kilograms of diluent can be applied per acre; During the flowering period of peanuts in the greenhouse, 10 cubic grams of carbon dioxide fertilizer are applied per acre.
Sunlight greenhouses can also cut off seedlings that have not been dormant in winter during the seedling protection period after frost occurs, and cover them with cotton quilts or fermented materials during the seedling protection period. Then, remove the film, sun it for 1-2 days before watering.
There are mainly two types of greenhouses in Henan, Anhui, Jiangsu, Zhejiang, and Shaanxi, and currently there are some applications in Shanghai, and other places in China. At present, there are three commonly used covering materials for solar greenhouses in China: thin film, glass, and solar greenhouses. Double layer film covering single layer film is commonly used in winter warm solar greenhouses, and double layer film is used in two methods: the first method is to use polyvinyl chloride film+polyvinyl chloride film; The second type is aphid avoidance adhesive film+polyethylene film; The third type, double film coverage, early detection, early and late construction, saves costs.
