Hydroponic nutrient solution of lettuces and preparation method

Abstract

The invention discloses a hydroponic nutrient solution of lettuces and a preparation method. A formula of the nutrient solution is prepared from the following components: 50mL to 80mL of bean curd wastewater, 50mL to 120mL of tea cake water, 20mL to 30mL of a molasses fermented solution, 80g to 100g of plant ash, 0.5mg to 1.5mg of indolebutyric acid, 0.5mg to 1.5mg of naphthylacetic acid, 1.5mg to 5mg of chitooligosaccharide, 220mg to 250mg of ammonium nitrate, 5mg to 8mg of sodium molybdate, 3mg to 5mg of borax, 3mg to 5mg of calcium nitrate, 6mg to 10mg of ferrous sulfate, 1mg to 3mg of manganese sulfate, 1mg to 3mg of zinc sulfate, 1mg to 3mg of copper sulfate and piggery dung water which is added until the volume is 1L. The hydroponic nutrient solution of the lettuces is prepared through he following steps: filtering the wastewater; after heating the wastewater, cheating the wastewater with microelements to form a complexed product; finally, adjusting the pH (Potential of Hydrogen), electrical conductivity and dissolved oxygen. The hydroponic nutrient solution is good for the growth of the lettuces and pesticide spraying and fertilizer application are not needed during a growth period; the raw materials have a wide source and a preparation process is simple, so that the hydroponic nutrient solution has relatively great popularization value.

Description

technical field [0001] The invention belongs to the field of plant cultivation, and in particular relates to a lettuce hydroponic nutrient solution and a preparation method. Background technique [0002] lettuce( var. ramosa Hort. ) The common name of leaf lettuce, also known as goose dish, mark dish, lettuce, belongs to the genus Lactuca of Compositae. It is an annual or biennial herb crop. The leaves are obovate and densely formed into cabbage-like leaf balls. It can be eaten raw, crisp, tender and refreshing, and slightly sweet. Lettuce is rich in nutrients, containing a lot of β-carotene, antioxidants, vitamins B1, B6, vitamin E, and vitamin C, as well as a lot of dietary fiber and trace elements such as magnesium, phosphorus, calcium and a small amount of iron, copper, and zinc. Strengthen the digestion and absorption of protein and fat, improve the blood circulation of the stomach, you can often eat lettuce. The nature of lettuce is sweet and cool. Because the stems...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the hydroponic nutrient solutions for lettuce use a combination of large amounts of elements and medium and trace elements. Although it can meet the fertilizer needs of lettuce, it is still necessary to prevent and control lettuce pests and viruses in hydroponic management, resulting in lettuce. Pollution, how to choose the appropriate nutrient solution can not only ensure the regularity of fertilizer requirements for lettuce, but also repel insects and diseases in the later stage, do not use or use less pesticides, and truly realize the cultivation and production of pollution-free vegetables, and even organic vegetables.

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