Cucumber is very sensitive to fertilizers, and the principles of “one control, two promotion, three sprays, and four avoidances†should be mastered when topdressing.
A control planted to sit before the melon should see seed dressing, and control the dosage, it is appropriate to use "big manure, a small number of meals," the top dressing method, if the top dressing is too much and too concentrated, easily lead to plant leggy, affect reproductive growth, and even Caused by falling flowers, melons. Generally can be slightly applied diluted fecal water or biochemical fertilizer can be.
Second, promote cucumber is a root system, the need for more fertilizer in the vegetables, in the production process, in addition to the application of adequate organic fertilizer, but also a large number of topdressing chemical fertilizers, in the young fruit period to the harvest period should be aggravated Top dressing to promote nutrient requirements for its growth and fruit enlargement. In the root melon growth period, topdressing fertilizers can be applied 2-3 times, and 30% human urine leaching solution can be selected to ensure that the plants do not become de-fertilized. In the late growth stage to meet the needs of plant growth, to avoid late defermentation, causing premature plant failure or the emergence of malformed melons, usually in the sunny every 7-10 days topdressing human excrement or potassium sulfate compound fertilizer.
The three-spray cucumber not only absorbs nutrients from the soil from the roots, but also absorbs mineral nutrients from the leaves to promote fruit enlargement and development. Therefore, during the fruit growth period, especially during the middle and later stages, the top dressing should be matched with the auxiliary foliar spray 3-4. The secondary foliar fertilizer can be used as biochemical organic liquid fertilizer 300-500 times liquid, and can also be used to chelate multiple compound micronutrients 500 times, or supplement with boron, zinc, iron and other micro-fertilizers, in order to improve the quality of cucumber and enhance the resistance of the plants. Prevent premature aging.
4 avoid bogey cucumber fertilizer in the case of soil moisture, easy to cause female flower differentiation, malformed melon, resulting in defoliation, falling flowers and melon and other physiological diseases, fertilization under high temperature conditions, plant leaf water evaporation, will affect Fertilizer play. In addition, the fertilization time is appropriate in the early morning or early evening.
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