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Light environment regulation and control method for reducing heart rot rate of lettuces in plant factory

A light environment and lettuce technology, applied in botany equipment and methods, horticultural methods, leaf crop cultivation, etc., can solve problems such as increasing the fresh weight of lettuce, inhibiting the growth of lettuce, and browning the leaves or edges of young leaves, etc., to achieve The effect of reducing heartburn rate and increasing production

Active Publication Date: 2019-12-20
FUJIAN SANAN SINO SCI PHOTOBIOTECH CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the completely enclosed space of the plant factory, the vegetables produced are clean and free from pests and diseases, but the occurrence of burnt edges is unavoidable and serious
Burnt edge of lettuce is a physiological disease, and the incidence rate is high under protected cultivation conditions. The disease is characterized by scorching and browning of the early leaves or the edges of young leaves. If there is too much water and the temperature is high, it will gradually rot, which not only affects the yield, but also affects the appearance quality. and taste, greatly reducing the economic benefits of lettuce
In plant factories, artificial light sources are mainly used for light control. Red light and blue light are the main absorption bands for plant growth and development. Previous studies have shown that red light and blue light have an impact on lettuce heartburn. Zheng Xiaolei studied different light quality and The effect of nutrient solution composition on the growth of lettuce and the occurrence of burnt edges. The research results found that blue LED can significantly reduce the heartburn index of lettuce, but at the same time it can also inhibit the growth of lettuce, resulting in a decrease in yield, while red / blue light can significantly increase lettuce. fresh weight, but will increase the heartburn condition index
Previous studies have shown that in the existing technology, there is no way to ensure the reduction of lettuce heartburn and at the same time increase the yield of light environment regulation technology

Method used

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Examples

Experimental program
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Embodiment 1

[0017] After soaking the green butterfly lettuce seeds, sow them into sponge cubes, 1 seed per hole, and then put them in a germination box at 23°C for germination. After the seeds are white, move them to the hydroponic nutrient solution for seedling management. The EC value of the nutrient solution 0.8-1.2ms / cm, pH 6.0-7.0, until 4-5 true leaves are cultivated. Select neat and consistent seedlings with 4-5 true leaves for transplanting and planting on the planting board, the distance between planting rows is 15cm×20cm, and put them in the nutrient solution tank for cultivation. The nutrient solution film cultivation technology is adopted, and the nutrient solution EC control Between 1.5-1.8ms / cm, the pH is 6.0-7.0. At the same time, during the whole planting period, the temperature of the nutrient solution is controlled at 21°C, the dissolved oxygen is 5-6mg / L, and the ambient temperature conditions are 21°C during the day and 18°C ​​at night. ℃, the air humidity is 60-70%, a...

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Abstract

The invention discloses a light environment regulation and control method for reducing a heart rot rate of lettuces in a plant factory. The method comprises the step that in the cultivation process ofthe lettuces in the plant factory, green light is added for irritation to reduce the heart rot rate of the lettuces. According to the light environment regulation and control method for reducing theheart rot rate of the lettuces in the plant factory, in the cultivation process of the lettuces, on the basis of matching of red light and blue light, an appropriate proportion of green light is addedfor light environment regulation and control cultivation, so the yield can be significantly increased, and the heart rot rate of the lettuces is reduced.

Description

technical field [0001] The invention relates to the technical field of vegetable cultivation, in particular to a light environment control method for reducing lettuce heartburn in a plant factory. Background technique [0002] Lettuce is an annual or biennial herbaceous plant belonging to the genus Lactuca of Compositae, also known as leaf lettuce. The lettuce cultivation cycle is short (40-60d), easy to manage, and high in yield. Lettuce is the main cultivated vegetable in the plant factory, and improving its yield and quality is the primary way to improve efficiency. Lettuce is mostly eaten raw, and it is mainly supplied to various fast food restaurants, or sold as salads in supermarkets, and the appearance quality is particularly important. In the completely enclosed space of the plant factory, the vegetables produced are clean and free from pests and diseases, but the occurrence of burnt edges is unavoidable and serious. Burnt edge of lettuce is a physiological disease...

Claims

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Application Information

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IPC IPC(8): A01G7/04A01G22/15A01C1/00
CPCA01C1/00A01G7/045A01G22/15Y02P60/14
Inventor 陈艺群李阳李绍华罗梅秀龚化勤马健
Owner FUJIAN SANAN SINO SCI PHOTOBIOTECH CO LTD
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