Greenhouse vegetables should use organic water-soluble fertilizer and fertilization
Organic water-soluble fertilizer refers to the production of pure natural fine food-grade raw materials. It is a finely powdered, fully water-soluble, high-content organic fertilizer. The basic feature of organic water-soluble fertilizer is good water solubility, which can be completely dissolved in water, which can be directly absorbed and utilized by the roots and leaves of crops. It can be quickly dissolved in water, nutrients are more easily absorbed by crops, and the absorption utilization rate is relatively Higher, can be applied to spray application, sprinkler irrigation, drip irrigation to achieve the integration of water and fertilizer, saving water, fertilizer and soil. In order to meet the needs of modern intensive agriculture, it is necessary to scientifically and appropriately develop and popularize such fertilizers.
Fertilization is also called water fertilization. It is a way of top dressing. In fact, it is to dissolve solid quick-acting fertilizers in water and fertilize them in a water-bearing manner. Chong fertilization usually uses water-soluble chemical fertilizers, mainly nitrogen fertilizers and potash fertilizers, both of which have strong water solubility. Through the combination of fertilizer and water, soluble nitrogen and potassium nutrients can be infiltrated into the soil and then absorbed by the crop root system. Irrigation and fertilization means irrigation and fertilization, and irrigation methods can be divided into well irrigation and border irrigation, including drip irrigation and sprinkler irrigation. In some places, extensive management and even flood irrigation are used to flush out fertilizer. This method of fertilization by flood irrigation highlights the word "rushing", which can easily cause a large amount of nitrogen loss, and also make the water use rate low.
Experts suggest that 1. Organic fertilizer is combined with inorganic fertilizer. Although some rush fertilizers contain humic acid, most inorganic fertilizers are mainly nitrogen fertilizers such as ammonium nitrate and urea. Vegetables grow well in the short term, but lack long-term effects. Some of the fertilization is mainly based on cake fertilizer (seed cake, cotton cake, bean cake) and diammonium phosphate (or ammonium nitrate). The effect is not good because the fermentation of cake fertilizer takes a certain amount of time.
2. Combine top dressing with fertilizing. The selection of fertilizers is mainly based on multi-element compound fertilizers. The combination of topdressing and flushing is used to solve the problem of surface root fertilizer requirements. On the other hand, topdressing can activate the soil layer, increase the root system, and alleviate the fertilizer effect.
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