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Method for improving quality of facility Chinese cabbages before harvesting

A facility and pre-harvest technology, which is applied in the field of improving the quality of cabbage before harvest, can solve the problems of increased energy consumption, insignificant growth and development of cabbage, and can not meet the needs of special light quality of cabbage, so as to reduce content and increase biomass , the effect of promoting growth

Inactive Publication Date: 2021-07-23
INST OF URBAN AGRI CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0003] At present, a large number of cabbage lighting is still dominated by supplementary light, and some cabbage facilities completely use artificial light sources. The purpose is to provide the energy necessary for the growth of cabbage photosynthesis. The light quality ratio of the lighting fixtures used is based on chlorophyll a and Chlorophyll b is the main absorption peak of red light and blue light, but only the red and blue light band lighting forms are far from meeting the needs of special light quality in different growth stages of cabbage, which will lead to increased energy consumption due to poor matching of reference spectra in the application process , the effect of regulating the growth and development of cabbage is not significant, etc.

Method used

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  • Method for improving quality of facility Chinese cabbages before harvesting
  • Method for improving quality of facility Chinese cabbages before harvesting
  • Method for improving quality of facility Chinese cabbages before harvesting

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Experimental program
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Embodiment 1

[0040] 1. This test was carried out in a greenhouse in the College of Horticulture of South China Agricultural University (113.36° east longitude, 23.16° north latitude). Green-leaf pak choi and red-leaf pak choi (Brassica campestris ssp. chinensis var. communiscv. green-and red-leafpak-choi) were used as test materials. Soak the seeds for 1 hour, and germinate them in the dark at 25±2°C for 24 hours, sow the seeds in sponge blocks (2cm×2cm×2cm), and water the nutrient solution (CaNO 3 236.25 mg / L, KNO 3 151.75mg / L, NH 4 PO 4 10928.75mg / L, MgSO 4 123.25 mg / L, pH=6.0). When the seedlings reach three leaves and one heart, move the pakchoi seedlings to a water tank (volume 20 L) containing 1 / 2 Hoagland nutrient solution, room temperature 35°C / 20°C (day / night), and the nutrient solution is replaced every 10 days. After transplanting seedlings for 30 days, under full artificial conditions, red leaf and green leaf Chinese cabbage were used as test materials, and blue light, UV-...

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Abstract

The invention provides a method for improving the quality of facility Chinese cabbages before harvesting, and belongs to the technical field of plant cultivation. The method comprises the following steps: 5-15 days before harvesting of Chinese cabbages, white light is adopted as a basic light source, and blue light or UV-A is overlaid and radiated on the Chinese cabbages. According to the method, the growth of the Chinese cabbages can be promoted, the biomass of the Chinese cabbages is increased, the total amount of photosynthetic pigments (chlorophyll a and chlorophyll b) of the Chinese cabbages is increased, the content of total phenols, flavonoids and anthocyanin of the Chinese cabbages is increased, the oxidation resistance is improved, and the content of nitrate of the Chinese cabbages is reduced.

Description

technical field [0001] The invention relates to the technical field of plant cultivation, in particular to a method for improving the pre-harvest quality of facility cabbage. Background technique [0002] The use of light to regulate the growth and development of cabbage and the quality of product organs is more precise and easy to operate than temperature and humidity regulation. Compared with external hormone regulation, it is more time-sensitive and has no pollution to the environment and no residues in agricultural products. [0003] At present, a large number of cabbage lighting is still dominated by supplementary light, and some cabbage facilities completely use artificial light sources. The purpose is to provide the energy necessary for the growth of cabbage photosynthesis. The light quality ratio of the lighting fixtures used is based on chlorophyll a and Chlorophyll b is the main absorption peak of red light and blue light, but only the red and blue light band light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/04A01G22/15
CPCA01G7/045A01G22/15
Inventor 郑胤建杨其长许亚良卞中华王森
Owner INST OF URBAN AGRI CHINESE ACADEMY OF AGRI SCI
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