Fertilizer requirement
Cucumber is suitable for cultivation in loose, fertile and breathable soils. Viscous and heavy soils are not conducive to the development of cucumber roots. Soils with high organic matter content can balance the roots of cucumbers, which are resistant to phlegm, but not to fertilizer. The growth cycle of cucumber is roughly divided into the germination period, the seedling stage, the pumping period and the flowering and melon period.
The demand for nutrients in the early growth period of cucumber is relatively small. With the advancement of growth period, the absorption of nutrients increases significantly, and reaches the peak of absorption when it reaches the period of fruiting. During the whole growth period, the absorption of nitrogen nutrients continued to increase, and entered the harvest period of the fruit increased sharply. Cucumber is a nitrate-like nitrogen crop. When only supplying ammonium nitrogen, the leaves become smaller, the growth is slower, and the absorption of calcium and magnesium is increased. Reduced, and often the physiological barrier to calcium deficiency, so that production is reduced. Phosphorus uptake by cucumbers was less in the early stage and increased to fruit enlargement and harvest. The absorption of potassium by cucumber was the most, followed by nitrogen.
Fertilization technology
The fertilization amount per mu for the whole growth period of cucumber is 400-450 kg for commercial organic fertilizer, 14-18 kg for nitrogen fertilizer (N), 6-8 kg for phosphate fertilizer (P2O5), and 9-11 kg for potassium fertilizer (K2O). Organic fertilizer was used as base fertilizer, nitrogen and potassium fertilizer were used as base fertilizer and topdressing fertilizer. The amount of topdressing fertilizer was evenly distributed each time. Phosphorus fertilizer was all used as base fertilizer and chemical fertilizer and organic fertilizer were mixed and applied.
Basal fertilizer application of farmhouse fertilizer per acre of commercial organic fertilizer 400-450kg, urea 4-5kg, 13-17kg of diammonium phosphate, potassium sulfate 3-4kg.
Top dressing fertilizer during early melon period: 7 months urea 7-8kg urea, potassium sulfate 5-6kg.
During the harvest period, cucumbers grow longer. With the harvesting of cucumbers and the continuous consumption of nutrients, continuous fertilizers are needed to ensure nutrient supply. Otherwise, cucumbers will prematurely decline due to lack of fertilizers, and the effective harvest period will be shortened and the yield will be reduced. The fertilizer may be topdressed once every 10 days or twice per harvest and top dressing once. To promote the expansion of melons, improve yield and quality.
Outside the roots, the top dressing can be sprayed with 1% urea solution. In order to supplement the deficiency of phosphorus and potassium, 0.5% of potassium dihydrogen phosphate can be sprayed on the leaves. Trace elements should be promptly added when the soil trace elements are insufficient. , Foliar spraying 0.1% borax or multi-element micro fertilizer 2-3 times.
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