Efficient nutrient solution for liquid culture of lettuce and preparation method of efficient nutrient solution

Abstract

The invention discloses an efficient nutrient solution for liquid culture of lettuce and a preparation method of the efficient nutrient solution. The efficient nutrient solution is prepared from the following raw materials in parts by weight: an alga mixed solution, potassium ferrate, aluminum sulfate, EDTA (ethylenediaminetetraacetic acid) ferric sodium salt, chitosan oligosaccharide, monopotassium phosphate, magnesium sulfate, sodium hydrogen sulfite, ammonium molybdate, ferrous sulfate, polyaspartic acid, citric acid and a proper amount of water, wherein the solution is high in fluidity and can provide sufficient oxygen for water and keep the breathing action of roots; meanwhile, the nutrient solution belongs to colloid with high adhesion and is easily adsorbed onto the lettuce roots to form envelopes, and intermediates are established between the nutrient elements and the roots, accordingly, enrichment of elements nearby the roots is promoted, the problem that absorption of inorganic mineral elements is blocked by flowing water is solved, the yield is effectively increased, and the quality is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of liquid culture liquid for soilless cultivation, and in particular relates to a high-efficiency nutrient liquid for liquid cultivation of lettuce and a preparation method thereof. Background technique [0002] The advantage of soilless cultivation is that: using a liquid nutrient matrix, you can directly dissolve mineral salts in liquid water, and then provide nutrients in a flowing manner. Without the support of soil, the crops can directly absorb nutrients from the root system, which greatly saves Manpower and land resources, while also saving fertilizer and avoiding environmental problems caused by fertilizer loss; however, several problems of the liquid culture mechanism need to be improved, and greater benefits will be obtained. [0003] The form of nutrient absorption by the root system of crops is mainly from the root hair area of ​​the root tip of the fibrous root system in the root system, from th...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to study a liquid soilless planting substrate, provide all the nutrient elements and growth active substances for crop growth, improve the utilization rate, and solve the rot caused by the good fluidity of the substrate but the poor element adhesion and low air permeability in the past. and pest problems, specifically through the following methods: