Nutrient solution special or water culture of lettuce and preparing method of nutrient solution

Abstract

The invention relates to a nutrient solution special for water culture of lettuce and a preparing method of the nutrient solution, and belongs to the technical field of nutrient solutions of water-cultured lettuce. A formula of the nutrient solution special for water culture of the lettuce comprises a major element solution A, a microelement solution B and a chicken manure biogas slurry solution C. The major element solution A comprises the solution A1 and the solution A2, wherein the solution A1 is composed of 236 g / T of calcium nitrate terahydrate, 133.5 g / T of potassium nitrate and 26.5 g / T of ammonium nitrate, and the solution A2 comprises 50 g / T of monopotassium phosphate, 58 g / T of potassium sulphate and 123 g / T of magnesium sulfate heptahydrate. The microelement solution B comprises 10-20 g / T of chelated iron, 1.43 g / T of boric acid, 1.065 g / T of manganese sulfate, 0.11 g / T of zinc sulfate, 0.04 g / T of copper sulfate and 0.01 g / T of ammonium molybdate. The chicken manure biogas slurry solution C is composed of 2, 000 ml of a concentrated solution of a high-concentration chicken manure fermentation solution. The concentrated solution of the high-concentration chicken manure fermentation solution is added, the using amount of nutrient elements is reduced by 30-50%, and environment friendliness is achieved. The quality of the water-cultured lettuce is improved, static cultivation is achieved, and the lettuce becomes mature earlier by around 7 days.

Description

technical field [0001] The invention relates to a nutrient solution formula and a preparation method thereof, in particular to a special nutrient solution formula for lettuce hydroponics and a preparation method thereof, belonging to the technical field of hydroponic lettuce nutrient solution. Background technique [0002] The existing formula is completely composed of inorganic nutrient elements, and it is necessary to add acid and alkaline substances such as citric acid, phosphoric acid, etc. to adjust the pH value, resulting in a waste of elements; and the usage amount is large, resulting in a waste of resources and environmental pollution. [0003] The general nutrient solution formulations are all inorganic nutrients, which have poor self-buffering properties, and the nutrient solution responds quickly, that is, the concentration changes significantly, and the increase or decrease of the fertilizer concentration (nutrient ion concentration) will cause physiological obsta...

AI Technical Summary

Problems solved by technology

Therefore, some nutrient solution formulas adding fungicides have appeared at present, which solve this problem to a certain extent, but at the same time bring the pollution of pesticides to lettuce