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Water culture method of lettuces

A technology of lettuce and hydroponics, applied in botany equipment and methods, cultivation, medium, etc., can solve the problems of lettuce chemical residues, lettuce elements exceeding the standard, and continuous planting, etc., to achieve well-developed root system, simple method, and neat emergence Effect

Inactive Publication Date: 2017-01-04
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 lettuce is mostly eaten raw, it is required that the lettuce must be clean and free of pesticide residues. However, most of the existing lettuce is planted on land, and fertilizers are needed during the planting process, and some chemicals are needed to prevent the occurrence of pests and diseases. This leads to chemical residues on the lettuce, and some substances remaining in the soil may also cause some elements in the lettuce to exceed the standard; and due to the limitation of temperature and other conditions, the traditional lettuce planting can only be planted for one season a year and cannot be planted continuously

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] A hydroponic method for lettuce, comprising the following steps:

[0031] Step 1, use infrared rays to irradiate the lettuce seeds for 45 minutes, then put the lettuce seeds into the soaking solution for 8 hours, then put the lettuce seeds into clear water and soak for 10 hours, the soaking solution is made of 0.02% H 3 BO 3 solution and KNO with a mass fraction of 4% 3 The solution is mixed according to the mass ratio of 1:1;

[0032] Step 2: Place several sterilized sponge cubes with a side length of 2 cm flat on the seedling tray, spread the lettuce seeds obtained in step 1 on the surface of the sponge, so that there are 2 lettuce seeds on the surface of each sponge , 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 with clean water;

[0033] After the seeds obtained in step 3 and step 2 grow true leaves,...

example 2

[0037] A hydroponic method for lettuce, comprising the following steps:

[0038] Step 1, use infrared rays to irradiate the lettuce seeds for 45 minutes, then put the lettuce seeds into the soaking solution and soak for 10 hours, then put the lettuce seeds into clear water and soak for 12 hours, the soaking solution is composed of 0.02% H 3 BO 3 solution and KNO with a mass fraction of 4% 3 The solution is mixed according to the mass ratio of 1:1;

[0039] Step 2: Place several sterilized sponge cubes with a side length of 3 cm on the seedling tray, spread the lettuce seeds obtained in step 1 on the surface of the sponge, so that there are 3 lettuce seeds on the surface of each sponge , and 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 18-22°C, and spray water on the surface of the sponge 3 times a day with clean water;

[0040]After the seeds obtained in step 3 and step 2 ...

example 3

[0044] A hydroponic method of lettuce, is characterized in that, comprises the following steps:

[0045] Step 1, use infrared rays to irradiate the lettuce seeds for 60 minutes, then put the lettuce seeds into the soaking solution for 10 hours, then put the lettuce seeds into clear water and soak for 12 hours, the soaking solution is made of 0.02% H 3 BO 3 solution and KNO with a mass fraction of 4% 3 The solution is mixed according to the mass ratio of 1:1;

[0046] Step 2. Place several sterilized sponge cubes with a side length of 2-3 cm on the seedling tray, and spread the lettuce seeds obtained in step 1 on the surface of the sponge, so that there are 4 seeds on the surface of each sponge. 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 22°C, and spray water on the surface of the sponge 3 times a day with clean water;

[0047] After the seeds obtained in s...

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PUM

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Abstract

The invention discloses a water culture method of lettuces. The method comprises the steps that firstly, lettuce seeds are pretreated; secondly, the lettuce seeds obtained in the first step are spread on the surface of a sponge cube; thirdly, after true leaves grow out of the seeds obtained in the second step, thinning is carried out, and a first nutrient solution is added; fourthly, after 2-3 true leaves grow out of each seedling, the seedlings are transplanted into the first nutrient solution for culture; fifthly, after 4-5 true leaves grow out of each seedling, the seedlings are transplanted into a second nutrient solution for culture. Through the water culture method of the lettuces, the growth cycle of the lettuces is short, and obtained finished products are 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 method for hydroponics of lettuce. Background technique [0002] Lettuce, commonly known as leaf lettuce, also known as goose vegetable, star vegetable, 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 has a long history of being introduced into China. It is cultivated more in the southeast coast, especially in the suburbs of big cities and in Guangdong and Guangxi. In recent years, the cultivation area has expanded rapidly, and lettuce has also entered the tables of ordinary people from hotels and restaurants. [0003] Since lettuce is mostly eaten raw, it is required that the lettuce must be clean and free of pesticide residues. However, most of the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00C05G1/00
CPCA01G24/00A01G31/00C05B7/00C05G5/23C05B17/00C05C1/00C05C3/00C05C5/02C05C5/04C05C11/00C05D1/02C05D5/00C05D9/02C05F11/00
Inventor 杨明彰
Owner 北海市蔬菜研究所
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