Water culture nutrient solution prescription of lettuce and preparation method of water culture nutrient solution prescription

Abstract

The invention discloses a water culture nutrient solution prescription of a lettuce and a preparation method of the water culture nutrient solution prescription, and belongs to the technical field of plant soilless culture of the agricultural science. The nutrient solution prescription of the lettuce comprises the following components: a fertilizer A composed of 584.23g / T of calcium nitrate, 421.34g / T of potassium nitrate and 47.8g / T of ammonium nitrate; a fertilizer B composed of 182.4g / T of monopotassium phosphate and, 256.23g / T of magnesium sulfate; a fertilizer C composed of 16.8g / T of FeEDTA (Ethylene Diamine Tetraacetic Acid), 3g / T of boric acid, 2g / T of manganese sulfate, 0.25g / T of zinc sulfate, 0.85g / T of copper sulfate, and 0.38g / T of ammonium molybdate; hormone composed of 0.1g / T indolebutyric acid of or 0.1g / T of naphthylacetic acid; a bactericide composed of 15g / T of carbendazim; and nutrient solution pH (Potential Of Hydrogen) adjusting acid composed of 200ml / T of phosphoric acid or 150g / T of citric acid. The prescription is nutritionally balanced, so that the demand of the lettuce to nutrition can be met, the amount of used nutrient elements is decreased at the same time, the output of the lettuce is increased, and the fertilizers are saved; and the prescription effectively decreases the contents of nitrates in the lettuce under the water culture, improves the quality of the lettuce, enables the simplification of the complicated processes in preparation based on the demand of the actual operation, and is suitable for being used for meeting the requirements of industrialization production.

Description

1 Technical field [0001] The invention belongs to the technical field of soilless cultivation of agricultural science plants, and in particular relates to a lettuce soilless cultivation nutrient solution formula and a preparation method thereof. 2 background technology [0002] Soilless cultivation is an applied technology that has developed rapidly in recent years, and it is one of the directions of the agricultural technology revolution in the future. Soilless cultivation technology mainly provides fertilizer for individual plants in liquid form, which greatly improves the efficiency of fertilizer and water use. It has been widely used in vegetable cultivation at home and abroad in recent years. Hydroponics is one of the main forms of soilless cultivation. Because of its deep liquid layer, the total salt, various nutrients, dissolved oxygen, pH, temperature and water in the nutrient solution are not easy to change sharply, providing a root system. A relatively stable livi...

AI Technical Summary

Problems solved by technology

However, the cost of hydroponic vegetables has always been high. Due to the large amount of nitrate used in the nutrient solution formula for hydroponic vegetables, the nitrate content in hydroponic vegetable products is high. How to reduce the nitrate content of hydroponic vegetables and reduce The production cost of hydroponic vegetables has always been a research hotspot in the field of international soilless cultivation.

Although lettuce cultivated without soil is favored by consumers for its freshness, pollution-free, high nutritional value, but because lettuce is a low-yield crop, only by increasing the price to obtain higher economic benefits, it is difficult for lettuce production to enter large-scale production. market circulation