How to fertilize cucumbers in greenhouses in spring, fertilization plan for cucumbers in greenhouses in spring
Cucumber is a vegetable that everyone likes very much. It is also an infinitely growing vegetable. It likes fertilizer and water. It grows quickly and has many fruits. At the same time, it has a long growth period, high yield, and large nutrient absorption. So how to fertilize cucumbers in spring greenhouses? The following will introduce the fertilization plan for cucumbers in greenhouses in spring.
Spring greenhouse cucumber fertilization program
Cucumber is a high-yield crop and requires relatively high base fertilizer. Cucumber is a crop with high nitrogen and high potassium. Formula fertilization generally requires 30 kg of compound fertilizer + 2000-3000 kg of decomposed organic fertilizer + 7.5 kg-10 kg of biological bacterial fertilizer per mu.
After planting, top dressing 1~2 times according to plant growth.
The seedling fertilizer can be applied 7~10 days after the planting at a time, and it is beneficial for the crops to take root and lift the seedlings quickly.
The second time, before the vines are drawn to the flowers, a large amount of balanced fertilizer + earthworm protein stock solution is applied to promote flowering and fruiting.
When the melon strips are sitting and grow to 10-15 cm, they should bring fertilizer when watering, and gradually begin to enter the normal watering and fertilizer stage, and supplement foliar fertilizer in time.
Mainly use fertilizers with high nitrogen and high potassium, and appropriately add black gold containing mineral humic acid to improve the physical and chemical properties of the soil and enhance the nutritional level.
When it is found that the melted melon is serious, the melon leaves are hypertrophic, and there are many deformed melons, spray the leaves with calcium sugar alcohol, once every 3-5 days, which can effectively relieve. If lack of other trace elements, pay attention to supplement.
After entering the harvest period, the fertilizer and water should be based on the principle of light watering and frequent watering, and the amount of fertilizer should be light first and then heavy.
Depending on plant growth and harvest conditions, topdressing with a large amount of balanced fertilizer + high potassium fertilizer + Miao Langzhong, it is recommended to apply fertilizer once every 10 days.
Spring greenhouse cucumber fertilization types
Organic fertilizer is a complete fertilizer with relatively complete contents of nitrogen, phosphorus, potassium and various trace elements.
In the production of cucumbers in greenhouses, due to the low temperature and ground temperature in early spring, root activity, and the reduction of ventilation in the facility, the indoor carbon dioxide will be seriously lacking, and the photosynthetic yield will be significantly reduced.
Applying a sufficient amount of organic fertilizer, it can not only supply various nutrients to the crop growth station, but also play a major role in activating soil nutrients and improving the structure of soil aggregates.
Be sure to pay attention to whether the applied organic fertilizer is decomposed, otherwise it will cause root burning, breeding of pests and diseases, soil acidification and other hazards.
Biological Bacterial Fertilizer
Generally, the soil plough layer contains more than 180kg and 120kg of total potassium and total phosphorus per mu, but crops cannot be directly absorbed and utilized.
The application of biological bacterial fertilizer can accelerate the decomposition and transformation of soil organic residues and insoluble phosphorus, potassium and other mineral nutrients.
Mainly used for basal fertilizer and top dressing, pay attention to the application method.
The amount of soil topdressing should be based on the principle of less and more frequent, generally 40kg~50kg per shed each time. If you feel that the amount of fertilizer is insufficient, you can increase the number of top dressings.
Topdressing of cucumbers in sheds is strictly prohibited for dry application in planing and ditching, and application in ditches. In the high-yield period, every fertilizer must be watered to keep the high-yield period extended.
Foliar spraying fertilizer is generally used in the middle and late stages of production. For example, spraying high-purity potassium dihydrogen phosphate on the leaves in the late stage of growth can increase the disease resistance of cucumbers, delay senescence, and strive for high yields in the later stage.
Spraying foliar fertilizer and spraying chemicals are carried out separately. When spraying at the same time is required, it should also be sprayed in the morning and in the afternoon to prevent phytotoxicity.