Method of planting lettuce in plant factory
A planting method and technology of lettuce, which are applied in botany equipment and methods, horticultural methods, leaf crop cultivation, etc., can solve the problems of high planting cost, slow growth cycle, and low quality of lettuce, and achieve low planting cost and long-term maturity. Fast, improve the effect of light energy rate
Active Publication Date: 2018-10-30
ZHEJIANG TIANYUE TECH CO LTD
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Problems solved by technology
[0006] To sum up, the disadvantages of lettuce grown in plant factories are: 1. High energy consumption and high planting cost; 2. The spectrum used in each growth stage of lettuce is consistent, and the nutrient solution is also consistent, resulting in a slow growth cycle; 3. The quality of lettuce is low, and nutrient solution needs to be used during the planting process, so that the nitrate content in mature lettuce is 3.5-4.5mg / kg, which is close to or even higher than the nitrite content in the pollution-free vegetable standard, and the lettuce "leaf scorch" Severe, generally between 3-4%
Method used
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Experimental program
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Effect test
Embodiment Construction
[0025] The planting method of lettuce in a plant factory, the lettuce is irradiated by the light emitted by LED lamps with a red and blue light ratio of 60%-99%, which includes the following steps in turn:
[0026] (1) During the sowing germination period, no light is needed, the time is 1-2 days, the temperature is controlled at 20-23°C, and the relative humidity is 95%-100%. ;
[0027] (2) Greening period, the time is 8-12 days, the temperature is controlled at 20-23°C, the relative humidity is 80%-95%; the ratio of red and blue light is 4.8-5.2:1; the distance between the lamp and the lettuce is 6-9cm; At least four true leaves appear, the first two appearing as cotyledons;
[0028] If LED lamps with red and blue light accounting for 90%-99% are used, the PPFD reaching the lettuce leaves is 51-89μmol / m 2 / s, the PPF provided by LED lamps is 0.035-0.305μmol / s; if using LED lamps with red and blue light accounting for 60%-90%, to achieve the same effect, the PPFD reaching t...
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The invention belongs to the field of agricultural planting. According to a method of planting lettuce in a plant factory, the lettuce is irradiated by light emitted by LED lamps with red and blue light accounting for 60%-99%. The method includes the following steps in order: a sowing and germination accelerating stage, a greening stage, a slow rooting stage, a leaf growing stage, a vigorous vegetative growth stage, a slow vegetative growth stage, and a ripening stage. The greening stage, the slow rooting stage, the leaf growing stage, the vigorous vegetative growth stage and the slow vegetative growth stage are carried out with alternative light. The advantages of the method of planting the lettuce in the plant factory are that the planting cost is low and the ripening is fast.
Description
technical field [0001] The invention belongs to the field of agricultural planting and relates to a lettuce planting method. Background technique [0002] The plant factory is an efficient agricultural system that realizes annual continuous production of crops through high-precision environmental control in the facility. It uses computers to automatically control environmental conditions such as temperature, humidity, light, CO2 concentration, and nutrient solution for plant growth, so that plants in the facility can grow Labor-saving production that is not or rarely restricted by natural conditions. The plant factory has a high multiple cropping index, can produce all year round, and avoids continuous cropping obstacles. Leafy vegetables are not easy to store, but annual production is required to meet market demand, so plant factories are especially suitable for cultivating leafy vegetables. [0003] Lettuce is the main planting type under the existing plant factory mode....
Claims
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Patent Timeline
Login to View More IPC IPC(8): A01G22/15A01G7/04
CPCA01G7/045A01G22/15Y02P60/14
Inventor 陈俊华
Owner ZHEJIANG TIANYUE TECH CO LTD