Nutrient solution for soilless culture of long leaf lettuce and preparation method thereof

Abstract

The invention discloses a romaine lettuce soilless culture nutrient liquid. The romaine lettuce soilless culture nutrient liquid consists of the following components in parts by mass: 250-350 parts of rice washing water, 2-5 parts of urea, 1-5 parts of calcium nitrate, 1-5 parts of potassium nitrate, 1-3 parts of monopotassium phosphate, 1-6 parts of potassium sulfate, 0.5-2 parts of magnesium sulfate, 0.1-0.5 part of chelated iron, 0.2-2 parts of borax, 1-5 parts of sodium molybdate, 2-8 parts of elecampane, 1-5 parts of poria cocos and 1-3 parts of alum. The rice washing water used by the romaine lettuce soilless culture nutrient liquid is rich in nitrogen, phosphor, potassium and various trace elements needed for the growth of romaine lettuce; the elecampane and the poria cocos can be added to promote the romaine lettuce to evenly and comprehensively absorb trace elements, and to promote the growth and the root system development of the romaine lettuce, so that the plant resistance is strengthened, the occurrence of physiological diseases is prevented; the nutrition of the romaine lettuce soilless culture nutrient liquid well exceeds nutrients which can be provided by the soil, and thus, the romaine lettuce soilless culture nutrient liquid is relatively beneficial to the growth of the romaine lettuce; and the grown romaine lettuce is completely filled, crisp and tasty in fruit, bright-colored in lettuce leaf and good in quality.

Description

technical field [0001] The invention belongs to the technical field of nutrient solution for soilless cultivation of plants, and in particular relates to a nutrient solution for soilless cultivation of romaine lettuce and a preparation method thereof. Background technique [0002] As a new plant introduced by my country in the 1980s, romaine lettuce is planted and distributed all over the country. Although it has not been in China for a long time, it is very popular. Not only is the root part of romaine lettuce delicious, but its lettuce leaves can also be mixed into cold dishes or stir-fried. , the planting of long leaf lettuce should not only ensure the quality, but also pursue the output, so as to maximize the benefits. At present, most of the fertilizers in the long leaf lettuce planting are prepared by the farmers themselves. Such extensive preparation will lead to the loss of elements in the fertilizer and the elements If the ratio is not well grasped, the optimization e...

AI Technical Summary

Problems solved by technology

[0002] As a new plant introduced by my country in the 1980s, romaine lettuce is planted and distributed all over the country. Although it has not been in China for a long time, it is very popular. Not only is the root part of romaine lettuce delicious, but its lettuce leaves can also be mixed into cold dishes or stir-fried. , the planting of long leaf lettuce should not only ensure the quality, but also pursue the output, so as to maximize the benefits. At present, most of the fertilizers in the long leaf lettuce planting are prepared by the farmers themselves. Such extensive preparation will lead to the loss of elements in the fertilizer and the elements If the ratio is not well grasped, the optimal effect cannot be achieved, which will lead to waste of fertilizer, and will cause the adverse consequences of low yield and poor economic benefit of romaine lettuce