Cucumber pollution-free fertilization
Fertility requirements The cucumber cannot be deficient in phosphorus during its entire growth period, especially after sowing for 20 to 40 days. The demand for potassium is large in the middle and late stages of growth, but the effect of early lack of potassium on the yield is much greater than the lack of potassium in the later period. When there is a severe shortage of silicon, the leaves gradually wither from the lower part of the main stem and pollen fertility is low. Each production of 1,000 kilograms of cucumber requires 2.8-3.2 kg of nitrogen, 0.8-1.8 kg of phosphorus pentoxide, 3.0-4.4 kg of potassium oxide, 5.0-5.9 kg of calcium oxide, and 0.8-1.2 kg of magnesium oxide.
Soil selection should be humus-rich loam rich in organic matter, good air permeability, and water retention and drainage. The pH value should be 6.5, and the relative humidity of the soil should be 85% to 90%.
The nutrient soil is prepared by selecting the vegetable garden soil that has not been planted with the cucurbit crop within 2 to 3 years, and the organic fertilizer should be fully decomposed.
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