Cucumber is an infinite-growth vegetable. It likes fertilizer and water, it grows quickly and has many fruits. However, the root system is mainly distributed in shallow tillage layers of 15-25cm. difference.
Cucumber has a long growing period, high yield and large nutrient absorption, and is suitable for fertile soil planting. Re-application of organic fertilizers, appropriate application of chemical fertilizers, and mastering the principle of "eat less, eat more, combine fertilizer and water" are the basis for obtaining high quality and high yield of cucumber.
Selection of fertilization type
Organic Fertilizer
Organic fertilizer is a complete fertilizer. The content of nitrogen, phosphorus, potassium and various trace elements is relatively complete.
In greenhouse cucumber production, due to the lower air temperature and ground temperature in the early spring, the activity of the root system is suppressed, and the ventilation of the facility is reduced, the indoor carbon dioxide will be seriously lacking, and the photosynthetic yield will be significantly reduced.
A sufficient amount of organic fertilizer must be applied, which can not only supply various nutrients necessary for crop growth, but also play a major role in activating soil nutrients and improving soil aggregate structure.
Must pay attention to whether the applied organic fertilizer is rotten, otherwise it will cause root burning, breeding of diseases and insect pests, soil acidification and other hazards.
Biological fertilizer
Generally, the cultivated layer of soil contains 180 and 120 kg of total potassium and total phosphorus, respectively, but 80 ~ 90% of the 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.
Compound fertilizer
It is mainly used for base fertilizer and topdressing. Pay attention to the application method.
The amount of topdressing the soil should be based on the principle of little and diligent, generally it is advisable to chase 40kg ~ 50kg per shed each time. If you feel that the amount of fertilizer is insufficient, you can increase the number of times of topdressing.
Topdressing cucumber topdressing is strictly forbidden for dry planing and furrowing, and must be applied along with the furrow. In the high-yield period, every fertilizer must be water, and the high-yield period is extended.
Foliar spraying is generally in the middle and late stages of production. For example, spraying high-purity potassium dihydrogen phosphate (source of potassium and potassium) in the late growth stage can increase cucumber disease resistance, delay senescence, and strive for high yield in the later stage.
It is best to spray foliar fertilizer separately from the spraying agent. When spraying at the same time, spray the fertilizer in the morning and the fertilizer in the afternoon to prevent pesticide damage.
Fertilization scheme of cucumber
Bottom fertilizer
Cucumbers belong to high-yield crops, and require higher base fertilizer. Cucumbers are high-nitrogen and high-potassium crops. Generally, 30 kg of compound fertilizer + 2000-3000 kg of rotten organic fertilizer + 7.5 kg-10 kg of high-quality biological bacterial fertilizer are used for formula fertilization.
top dressing
After planting, apply fertilizer 1 or 2 times according to the growth of the plant.
For the first time, you can apply fertilizer to raise seedlings 7 to 10 days after planting, and apply 200 ~ 300 times liquid of sea elf biological stimulant, which is beneficial to the rapid rooting and rapid raising of crops.
For the second time, before pumping the vines to the flowers, apply a large amount of elemental balanced fertilizer 3 kg + 2 kg of sea elf biostimulant per acre to promote flowering and fruiting.
Wait for the squash to sit. When it grows to 10-15 cm, you should bring fertilizer when watering, and gradually start to enter the normal watering and flushing stage, and add foliar fertilizer in time.
It is mainly based on fertilizing high nitrogen and potassium fertilizers, and appropriate addition of sea elf biological stimulants containing mineral humic acid to improve soil physical and chemical properties and nutrition levels.
When it is found that the melons are serious, the leaves are enlarged, and there are many malformed melons, 0.2kg of phosphorus and potassium source and sink are used to dissolve 100kg of water and sprayed on the leaves, once every 3-5 days, which can effectively relieve it. If other trace elements are missing, pay attention to supplement.
After entering the harvesting period, fertilizers and water should master the principles of light irrigation and hard watering.
Depending on the growth and harvest of the plant, a large amount of balanced element fertilizer 2 kg + high potassium fertilizer 3 kg + sea spirit biological stimulant 5 kg per acre is applied every time. It is recommended to apply fertilizer once every 10 days.
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