Seedling hydroponic method

Abstract

The present invention belongs to hydroponic technology, and specifically relates to a seedling hydroponic method, which is characterized by: cutting the roots of the seedlings, treating them with thirsty water, continuing to cultivate, and producing roots again, and then transporting or transplanting them as hydroponic plant products. In the above scheme, since the hydroponic seedlings have been cultivated in the hydroponic solution, the roots produced are indeterminate roots. If they are allowed to continue to grow, they are prone to atrophy, which shortens the life of the plants. Therefore, after a period of cultivation, the roots are cut and treated with thirsty water to awaken the thirsty genes of the plants, prompting the plants to produce thirsty roots. The secondary roots are water roots, which improve the ability of the roots to absorb water and nutrients, greatly improve the environmental adaptability of the plants, and extend the life of the plants.

Description

Technical Field

[0001] The invention belongs to hydroponic technology, and in particular relates to a seedling hydroponic method. Background Art

[0002] Hydroponics is a method of growing plants without soil. Hydroponic plants are not only clean and hygienic, but also highly ornamental and environmentally friendly, so they are favored by consumers. There are many hydroponic plant products on the market, but many consumers find that it is difficult for the hydroponic plant products they purchase to survive for a long time, even for the plant varieties that are easiest to maintain and survive. Therefore, how to extend the life of hydroponic plants, or how to improve the environmental adaptability of hydroponic plants, has become the focus and difficulty of hydroponic technology research. Summary of the invention

[0003] The purpose of the present invention is to provide a seedling hydroponic method, which can greatly improve the environmental adaptability of hydroponic plants, prolong the life of hydroponic plants, and reduce the difficulty of cultivation.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a seedling hydroponic method, characterized in that: the seedlings are root-pruned, treated with thirsty water, and continued to be cultivated. After they produce roots again, they can be transported or transplanted as hydroponic plant products.

[0005] The specific steps include:

[0006] (a) First hydroponic culture, root pruning, and watering: The seedlings are placed in a hydroponic device for hydroponic culture. After the roots grow to 3 to 5 cm in length, the hydroponic device is taken out for root pruning until the roots are 2.5 to 4 cm long. The sponge of the hydroponic device is allowed to dry naturally, and watering is continued for 20 to 30 hours after drying.

[0007] (b) Second hydroponic culture: The lower part of the hydroponic device is immersed in the hydroponic solution again after being dehydrated. After the roots of the seedlings grow again, they can be transported or transplanted as hydroponic plant products.

[0008] During the cultivation process, the temperature of the hydroponic solution is 5-30°C.

[0009] In the step (a), before root pruning, the water retention of the sponge in the hydroponic device is controlled to be less than 1%.

[0010] In the above scheme, since the hydroponic seedlings have been cultivated in the hydroponic solution, the roots they produce are adventitious roots. If they are allowed to continue growing, they are prone to atrophy, which will shorten the life of the plants. Therefore, after a period of cultivation, they are subjected to root pruning and thirsty water treatment to awaken the thirsty genes of the plants and encourage the plants to produce thirsty roots. The secondary roots are water roots, which improve the root system's ability to absorb water and nutrients, greatly improve the plant's ability to adapt to the environment, and extend the life of the plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of a hydroponic device used in the present invention;

[0012] Figure 2 It is a schematic diagram of the core 20 of the hydroponic device, i.e., the sponge. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below.

[0014] When the present invention performs hydroponics, the hydroponic device used is a hydroponic device disclosed by the applicant in a prior application entitled "Hydroponic Device" (application number 2022103375193, application date 2022.03.31), such as Figure 1 , 2 As shown, it comprises a first half unit 10a and a second half unit 10b, which enclose a tube body 10. The cavity enclosed by the tube body 10 constrains and accommodates a water-absorbing and soft tube core 20. The middle of the tube core 20 has a core cavity 21 that passes through the upper and lower end surfaces. The core cavity 21 and the outer peripheral surface of the tube core 20 have a radial interface 22, and the radial interface 22 extends from the upper and lower end surfaces of the tube core 20 in the vertical direction. The tube core 20 is made of sponge, which has good water absorption, is soft and will not squeeze seeds and seedlings, and is low in price.

[0015] In the actual cultivation process, seeds can be used for direct cultivation, or foreign seedlings can be used for cultivation. The following methods can be used to cultivate foreign hydroponic seedlings: A seedling hydroponic method: Cut the roots of the seedlings, treat them with thirsty water, continue to cultivate, and after they produce roots again, they can be transported or transplanted as hydroponic plant products.

[0016] The specific steps include:

[0017] (a) First hydroponic culture, root pruning, and watering: The seedlings are placed in a hydroponic device for hydroponic culture. When the roots are 6 to 8 cm long or 3 to 5 cm long, the hydroponic device is taken out for root pruning until the roots are 2.5 to 4 cm long. The sponge of the hydroponic device is allowed to dry naturally, and watering is continued for 20 to 30 hours after drying.

[0018] (b) Second hydroponic culture: The lower part of the hydroponic device is immersed in the hydroponic solution again after being dehydrated. After the roots of the seedlings grow again, they can be transported or transplanted as hydroponic plant products.

[0019] During the cultivation process, the temperature of the hydroponic solution is 5-30°C.

[0020] In the step (a), before root pruning, the water retention of the sponge in the hydroponic device is controlled to be less than 1%.

[0021] When the seedlings are treated with thirsty water, the temperature is 16℃~26℃ and the humidity is 49%~70%.

[0022] During the cultivation process, a hydroponic device with a sponge size of 5 to 6 cm in the vertical direction is used, and the seed part of the seedling is placed in the sponge at a depth of 2 to 3 cm, that is, the height is about the middle position. At this time, the water retention of the sponge needs to be controlled to be less than 1% (for example, when the maximum water retention of the sponge is 5g, the water content in the sponge is controlled to be less than 0.05g during cultivation). The seedling root system is cultivated to continue to grow. If the seedling root system itself is short, it is cultivated to a root length of 6 to 8cm. If the seedling root system itself is long, it is cultivated to a root length of 3 to 5cm. After the root length increases, the seedling is pruned until the root length exposed to the outside of the hydroponic device is less than 1cm; after the sponge of the hydroponic device is naturally dried, the dry thirsty state is maintained for 24 hours, and the seedling is hydroponically cultivated for the second time. The so-called "thirsty state" means that the plant is always in a thirsty state without providing water to the plant. The thirsty state in the present invention is to make the plant close to the critical point of dehydration death to maximize the plant's desire for water, so as to grow a stronger root system.

[0023] Since the seedlings have been cultivated in the hydroponic solution, their roots have always maintained a rapid and continuous growth state. At this time, the roots become indeterminate roots. If they are allowed to continue to grow, they will absorb

[0024] The ability to absorb water and nutrients will gradually decrease, causing the plant to shrink, burn or even die; the remaining root system inside the sponge can ensure that the seedling roots will not shrink prematurely.

[0025] After cutting the roots, place the hydroponic device outside (without culture solution). After the water in the sponge is completely lost and dried, delay for another 24 hours to keep the plant in a thirsty state, reaching the critical point of water shortage, and fully awakening the thirsty gene of the plant. At this time, place it in the hydroponic solution again for secondary root production.

[0026] These roots are called water roots. Compared with adventitious roots, their ability to provide water and nutrients to the plant is fully improved. They are not easy to shrink or rot, which greatly extends the life of the plant.

Claims

1. A seedling hydroponic method, characterized in that: The seedlings are root-cut, water-treated, and cultivated further, and after they produce roots again, they can be transported or transplanted as hydroponic plant products; The steps include: (a) First hydroponic culture, root pruning, and watering: Place the seedlings in a hydroponic device for hydroponic culture. After the roots grow to 3-5 cm in length, take out the hydroponic device and prune the roots until the length of the roots exposed outside the hydroponic device is less than 1 cm. Allow the sponge in the hydroponic device to dry naturally, and continue to water for 20-30 hours after drying. Before root pruning, the water retention of the sponge in the hydroponic device is controlled to less than 1%; (b) Second hydroponic culture: The lower part of the hydroponic device is immersed in the hydroponic solution again after it has dried out. After the roots of the seedlings grow again, they can be transported or transplanted as hydroponic plant products.

2. The seedling hydroponic method according to claim 1, characterized in that: During the cultivation process, the temperature of the hydroponic solution is 5-30°C.

3. The seedling hydroponic method according to claim 1, characterized in that: When the seedlings are treated with thirsty water, the temperature is 16℃~26℃ and the humidity is 49%~70%.

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