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Hydroponic culture method for lettuce

A technology of lettuce and hydroponics, applied in horticultural methods, botanical equipment and methods, cultivation, etc., can solve the problems of lettuce elements exceeding the standard, chemical residues in lettuce, and continuous planting, so as to achieve well-developed root system and shorten growth The effect of neat cycle and seedling emergence

Inactive Publication Date: 2016-12-07
北海市蔬菜研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the lettuce is mostly eaten raw, this requires that the lettuce must be clean and free of pesticide residues. However, the existing lettuce is mostly planted on land, and fertilizers are needed during the planting process, and some chemicals are also required to prevent the occurrence of pests and diseases. All these may lead to chemical residues on lettuce, and some substances remaining in the soil may also cause certain elements in lettuce to exceed the standard; and due to temperature and other conditions, traditional lettuce can only be planted for one season a year. cannot be planted continuously

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] A hydroponic method of lettuce, comprising the following steps:

[0032] Step 1. Use infrared rays to irradiate the lettuce seeds for 30 minutes, then put the lettuce seeds into the soaking solution and soak for 8 hours, then put the lettuce seeds into clear water and soak for 10 hours. The soaking solution consists of a mass fraction of 0.02% H 3 BO 3 solution and a mass fraction of 0.03% H 2 o 2 The solution is mixed according to the mass ratio of 2:1;

[0033] Step 2, placing several sterilized sponge cubes with a side length of 2-3 centimeters in a seedling tray, spreading the lettuce seeds obtained in step 1 on the surface of the sponge, so that each sponge surface has 2 -3 lettuce seeds, then add water to the seedling tray until the sponge is completely soaked, place the seedling tray in a cool place, control the room temperature at 18°C, and spray water on the surface of the sponge twice a day;

[0034] After the seeds obtained in step 3 and step 2 grow true...

example 2

[0038] A hydroponic method of lettuce, comprising the following steps:

[0039] Step 1. Use infrared rays to irradiate the lettuce seeds for 45 minutes, then put the lettuce seeds into the soaking solution for 8-10 hours, then put the lettuce seeds into clear water and soak them for 10-12 hours. Fraction 0.02% H 3 BO 3 solution and a mass fraction of 0.03% H 2 o 2 The solution is mixed according to the mass ratio of 2:1;

[0040]Step 2, placing several sterilized sponge cubes with a side length of 2-3 centimeters in a seedling tray, spreading the lettuce seeds obtained in step 1 on the surface of the sponge, so that each sponge surface has 2 -3 lettuce seeds, then add water to the seedling tray until the sponge is completely soaked, place the seedling tray in a cool place, keep the room temperature at 18°C, and spray water on the surface of the sponge 3 times a day;

[0041] After the seeds obtained in step 3 and step 2 grow true leaves, thin the seedlings, so that only o...

example 3

[0045] Step 1. Use infrared rays to irradiate the lettuce seeds for 60 minutes, then put the lettuce seeds into the soaking solution for 8-10 hours, then put the lettuce seeds into clear water and soak them for 10-12 hours. Fraction 0.02% H 3 BO 3 solution and a mass fraction of 0.03% H 2 o 2 The solution is mixed according to the mass ratio of 2:1;

[0046] Step 2, placing some sterilized sponge cubes with a side length of 2-3 centimeters in a seedling tray, spreading the lettuce seeds obtained in step 1 on the surface of the sponge, so that each sponge surface has 3 lettuce seeds, then add water to the seedling tray until the sponge is completely soaked, place the seedling tray in a cool place, keep the room temperature at 20°C, and spray the surface of the sponge with clean water 3 times a day;

[0047] After the seeds obtained in step 3 and step 2 grow true leaves, thin the seedlings, so that only one seedling is left on each sponge, and the first nutrient solution is ...

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Abstract

The invention discloses a hydroponic culture method for lettuce. The hydroponic culture method comprises the following steps: step 1, subjecting lettuce seeds to pretreatment; step 2, spreading the lettuce seeds obtained in the step 1 on the surface of a sponge cube; step 3, when the lettuce seeds obtained in the step 2 grow a true leaf, thinning lettuce seedlings, and adding a first nutrient solution; step 4, when the lettuce seedlings grow 2 to 3 true leaves, transplanting the lettuce seedlings into the first nutrient solution and carrying out culturing; and step 5, when the lettuce seedlings grow 4 to 5 true leaves, transplanting the lettuce seedlings into a second nutrient solution and carrying out culturing. The hydroponic culture method for the lettuce provided by the invention has the following advantages: the growth period of the lettuce is short; and the obtained lettuce is free of pollution and residues.

Description

technical field [0001] The invention relates to a planting method of lettuce. More specifically, the present invention relates to a hydroponic method of lettuce. Background technique [0002] Lettuce, also known as naked oats, also called bitter vegetables, belongs to Compositae and Lactuca. It is a sharp-leaved lettuce with young shoots and leaves as its products. The leaves are long lanceolate, light green in color and crisp in texture. Tender, very tender, fragrant, with a unique flavor, containing a lot of vitamin A, vitamin B1, vitamin B2 and a lot of calcium, iron, and other nutrients, it is the top grade among raw vegetables, known as "phoenix tail". Lettuce was introduced into China from foreign countries, and it is currently cultivated in most areas. In recent years, the cultivation area has expanded rapidly, and lettuce has also entered the dining table of ordinary people from hotels and restaurants. [0003] Since the lettuce is mostly eaten raw, this requires t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00A01C1/00A01G7/04C05G3/00
CPCA01C1/00A01G7/045A01G31/00C05B7/00C05G3/00C05G5/20C05B17/00C05C3/00C05C5/02C05C5/04C05C11/00C05D5/00C05D9/00C05D9/02C05F11/00Y02P60/14
Inventor 杨明彰
Owner 北海市蔬菜研究所
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