A strawberry seedling raising method

Abstract

This invention belongs to the field of agricultural technology and provides a method for cultivating strawberry seedlings. The method includes preventing root growth in the primary seedlings after they emerge from the mother seedling. This prevention of root growth includes spraying a rooting inhibitor at the base of the primary seedlings. The strawberry seedling cultivation method provided by this invention effectively prevents the seedlings from rooting and aging on the mother seedling. When the seedlings are cut off to root, precise watering of the roots allows for control over the drawbacks of drip irrigation and top spraying, resulting in seedlings of uniform age and robust seedlings, significantly improving economic efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of agriculture, and in particular relates to a strawberry seedling raising method. Background Art

[0002] Strawberry is a fruit with high nutritional and economic value. The planting area has been increasing in recent years, so the reproduction of strawberry seedlings is particularly important.

[0003] At present, the most commonly used method for propagating strawberry seedlings in agricultural production is the stolon propagation method. Stolons are above-ground stems formed by the axillary buds of new stems that extend from the strawberry. They grow upward when they are first born, and then extend along the surface to places with good sunlight. Strawberry stolons will sprout first-level seedlings at the nodes, and over time, they will gradually sprout side buds of second-level seedlings, third-level seedlings, fourth-level seedlings, and so on.

[0004] When the side buds of the seedlings come into contact with moist soil or even absorb moisture from the surrounding air, they will sprout adventitious roots (aerial roots). When the side buds of the seedlings sprout adventitious roots, the demand for water increases. If there is a long-term lack of water, the seedlings will age. Since the first-level seedlings are the first to grow, the most aged seedlings appear in the first-level seedlings. If the first-level seedlings are cut off in advance and watered to root, it is easy to make it difficult to control the seedling age, resulting in different ages of the first-level seedlings, second-level seedlings, and third-level seedlings, affecting the later planting management and harvesting.

[0005] The conventional seedling raising method in a plug tray is to cut the seedlings from the mother seedlings, plant them in the plug tray, and then water the seedlings by drip irrigation and top sprinkler irrigation to promote the rooting of the seedlings, thereby obtaining production seedlings. However, since the spacing of the drip irrigation eyes on the drip irrigation belt is difficult to control, and each hole of the seedling plug tray is also small (one seedling is planted in each hole of the plug tray), in order to take care of each seedling, a lot of drip irrigation belts need to be laid, which makes it more difficult to take care of each seedling with the setting of the drip irrigation belt and the drip irrigation eyes, and it is also easy to cause the displacement of the drip irrigation belt and the blockage of the drip irrigation eyes during use, which further aggravates the difficulty of reasonably and fully watering each seedling, resulting in uneven water obtained by the seedlings. Since the drip tape is generally black, and summer is the season for raising strawberry seedlings, the black drip tape can easily scald the weak seedlings in the summer when the temperature is high and the light is strong. If watering is done by top spraying, it is not only a waste of water, but the water is poured from top to bottom onto the strawberry seedlings. Therefore, it is easy to pour diseases on the mother seedlings (the mother seedlings and seedlings are generally in one greenhouse during production, and the period for cutting seedlings from multiple mother seedlings is not completely unified) and / or diseases in the air (such as spores of various pathogens in the air) onto the seedlings along with the water, causing the seedlings to be infected with diseases. Summary of the invention

[0006] In order to solve at least one of the above problems existing in the prior art, the present invention provides a strawberry seedling raising method, the method comprising: after the first-level seedlings are generated on the mother seedlings, the first-level seedlings are subjected to an operation of preventing the first-level seedlings from taking root; wherein, after the first-level seedlings are generated on the mother seedlings, the first-level seedlings are subjected to an operation of preventing the first-level seedlings from taking root, the first-level seedlings are subjected to an operation of spraying a rooting inhibitor on the base of the first-level seedlings;

[0007] The rooting inhibitor contains the following components:

[0008] Tannin, concentration is 0.4-0.7g / L;

[0009] Plant resin, concentration is 200-320g / L;

[0010] 6-BA, concentration 1.6-2.6 mg / L;

[0011] The solvent is: ethanol 90%-98%, water 2%-10%.

[0012] The strawberry seedling raising method provided by the present invention can effectively prevent the sub-seedlings from taking root and aging on the mother seedlings. When the sub-seedlings are cut and take root, the roots of the sub-seedlings can be accurately watered, thus overcoming the disadvantages of watering by drip irrigation pipes and watering by top spraying, so that the obtained production seedlings have uniform seedling ages and the sub-seedlings are robust, thereby greatly improving the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure shows the condition of the first-stage seedlings on the 45th day after the first-stage seedlings developed one cotyledon.

[0014] Figure 2 The figure shows the situation of the second-level seedlings 45 days after the first-level seedlings grew one cotyledon.

[0015] Figure 3 The figure shows the situation of the third-level seedlings 45 days after the first-level seedlings have grown one cotyledon.

[0016] Figure 4 The figure shows the situation of the fourth-level seedlings 45 days after the first-level seedlings have grown one cotyledon.

[0017] Figure 5 The figure shows the situation of the second-stage seedlings on the 30th day after the first-stage seedlings grew one cotyledon, without spraying the above-mentioned rooting inhibitor and without wrapping the water absorption device of Example 1 around the base of the seedlings.

[0018] Figure 6 The figure shows the situation of the first-stage seedlings on the 45th day after the first-stage seedlings grew one cotyledon, without spraying the above-mentioned rooting inhibitor and without wrapping the water absorption device of Example 1 around the base of the seedlings. DETAILED DESCRIPTION

[0019] To make the technical solution, purpose and advantages of the present invention clearer, the present invention is further described in detail below through specific implementation examples. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] The invention provides a strawberry seedling raising method, which comprises the following steps: after a first-stage seedling is grown on a mother seedling, the operation of preventing the first-stage seedling from taking root is performed on the first-stage seedling; wherein, after the first-stage seedling is grown on the mother seedling, the operation of preventing the first-stage seedling from taking root comprises: spraying a rooting inhibitor on the base of the first-stage seedling.

[0021] According to the method of the present invention, the rooting inhibitor contains tannin, plant resin and 6-BA, and is composed as follows:

[0022] Tannin, concentration is 0.4-0.7 g / L, for example, it can be any one of 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7 g / L or a range between two thereof, for example, 0.4-0.6 g / L, 0.45-0.65 g / L, 0.5-0.7 g / L; preferably 0.55 g / L.

[0023] The plant resin has a concentration of 200-320 g / L, for example, it can be any one of 200, 220, 240, 250, 260, 280, 300, 320 g / L or a range between two thereof, for example, 240-300 g / L, 200-260 g / L, 250-320 g / L; preferably 280 g / L; the plant resin can be, for example, rosin.

[0024] 6-BA (6-benzylaminopurine), the concentration is 1.6-2.6 mg / L, for example, it can be any one of 1.6, 1.8, 2, 2.2, 2.4, 2.6 mg / L or a range between two thereof, for example, 1.8-2.4 mg / L, 1.6-2.2 mg / L, 2-2.6 mg / L; preferably 2 mg / L.

[0025] The solvent is (by volume): ethanol 90%-98%, water 2%-10%.

[0026] Furthermore, the pH of the rooting inhibitor is 5.6-6.2; preferably, an organic acid is used to adjust the pH of the rooting inhibitor; the organic acid may be at least one of oxalic acid, malic acid, and citric acid.

[0027] The rooting inhibitor is prepared by the following method (taking the preparation of 1L of rooting inhibitor as an example):

[0028] First, weigh 0.4-0.7g of tannin and add it to 900mL of anhydrous ethanol (or 98% ethanol) to fully dissolve it. Then, add 200-320g of plant resin (such as rosin) to fully dissolve it. Then, add 6-BA mother liquor with a net content of 1.6-2.6mg of 6-BA and mix thoroughly. Add anhydrous ethanol (or 98% ethanol) to make up to about 990mL. Then, use an organic acid (such as citric acid) to adjust the pH of the rooting inhibitor to 5.6-6.2. Finally, add anhydrous ethanol to make up to 1L.

[0029] The application method is: after the primary seedlings grow a cotyledon, spray the base of the primary seedlings 3-4 times, 3-8 mL each time, preferably 5 mL of the above-mentioned rooting inhibitor; preferably, on the 2nd to 4th day (preferably the 3rd day), 9th to 12th day (preferably the 10th day), 14th to 16th day (preferably the 15th day), and 22nd to 28th day (preferably the 25th day) after the primary seedlings grow a cotyledon, spray the base of the primary seedlings once, 3-8 mL each time, preferably 5 mL of the above-mentioned rooting inhibitor.

[0030] After spraying the above-mentioned rooting inhibitor on the base of the first-level seedlings, 6-BA and tannin enter the first-level seedlings, which can inhibit the rooting of the first-level seedlings, and can also promote the first-level seedlings to maintain a strong state and delay the aging of the first-level seedlings; at the same time, the plant resin in the rooting inhibitor will adhere to the base of the first-level seedlings after the solvent evaporates, forming a layer of plant resin water-proof film, thereby preventing the base of the first-level seedlings from absorbing water.

[0031] Preferably, after the secondary seedlings grown on the mother seedlings grow a cotyledon, the base of the secondary seedlings is sprayed 2-3 times, 4-10 mL each time, preferably 7 mL of the above-mentioned rooting inhibitor; preferably, on the 2nd to 4th day (preferably the 3rd day), 9th to 12th day (preferably the 10th day), and 18th to 22nd day (preferably the 20th day) after the secondary seedlings grow a cotyledon, the base of the secondary seedlings is sprayed once, 4-10 mL each time, preferably 7 mL.

[0032] Preferably, after the tertiary seedlings grown on the mother seedlings grow a cotyledon, the base of the tertiary seedlings is sprayed 2-3 times, 5-10 mL each time, preferably 7 mL of the above-mentioned rooting inhibitor; preferably, on the 2nd to 4th day (preferably the 3rd day), 7th to 9th day (preferably the 8th day), and 10th to 14th day (preferably the 12th day) after the tertiary seedlings grow a cotyledon, the base of the tertiary seedlings is sprayed once, 5-10 mL each time, preferably 7 mL.

[0033] Preferably, after the fourth-level seedlings grown on the mother seedlings grow a cotyledon, the base of the fourth-level seedlings is sprayed 2-3 times, 5-10 mL each time, preferably 8 mL of the above-mentioned rooting inhibitor; preferably, on the 2nd-4th day (preferably the 3rd day), 5th-7th day (preferably the 6th day), and 8th-12th day (preferably the 10th day) after the fourth-level seedlings grow a cotyledon, the base of the fourth-level seedlings is sprayed once, 5-10 mL each time, preferably 8 mL.

[0034] By using the above-mentioned operation of spraying rooting inhibitors on the subsequently generated secondary seedlings, and / or tertiary seedlings, and / or quaternary seedlings, the rooting at the base of the seedlings can be effectively hindered, and it can also help adjust the growth status of the primary seedlings, secondary seedlings, tertiary seedlings, and quaternary seedlings, so that the obtained production seedling status is more consistent, thereby facilitating later production management.

[0035] Preferably, according to the method of the present invention, after the first-level seedlings are generated on the mother seedlings, the operation of preventing the first-level seedlings from taking root can also include: spraying a rooting inhibitor at the base of the first-level seedlings, and after the solvent in the rooting inhibitor has evaporated, further arranging a device at the base of the first-level seedlings to prevent the first-level seedlings from absorbing water.

[0036] Among them, the operation of the device for preventing the first-level seedlings from absorbing water at the base of the first-level seedlings can be: wrapping a dry sponge or a highly absorbent material (such as a highly absorbent resin, a water-absorbing gel, etc.) at the base of the first-level seedlings.

[0037] In a specific embodiment, a dry sponge can be wrapped around the base of a first-level seedling to wrap the base of the first-level seedling, so that the moisture in the air can be absorbed and blocked by the sponge, thereby avoiding the aging of the first-level seedling caused by the sprouting of adventitious roots after absorbing moisture; the sponge can be replaced in time according to the water absorption of the sponge to achieve the purpose of preventing the first-level seedling from absorbing moisture from the air.

[0038] Furthermore, in order to more effectively block the moisture in the air outside the base of the first-level seedlings, a circle of water absorption device can be set on the outside of the dry sponge (away from the side that wraps the first-level seedlings). The water absorption device can be, for example, a desiccant wrapped in a non-woven bag with small holes (the aperture of the small holes should ensure that water molecules can pass smoothly but the desiccant is not easy to leak out). The desiccant can be, for example, a chemical desiccant and / or a physical desiccant, preferably a physical desiccant. The chemical desiccant can be, for example, at least one selected from quicklime, calcium chloride, and calcium sulfate. The physical desiccant can be, for example, at least one selected from silica gel, activated alumina, and montmorillonite desiccant. Specifically, a flat belt-shaped non-woven bag filled with desiccant can be bonded to a dry sponge to form a desiccant-sponge water absorption device, and then the desiccant-sponge water absorption device can be wrapped around the base of the first-level seedling, with one side of the dry sponge facing the base of the first-level seedling, and then tied to the base of the first-level seedling with a rope or a cable tie; in this way, when the moisture in the air reaches the base of the first-level seedling, it will be absorbed by the desiccant, thereby avoiding aging caused by the sprouting of adventitious roots after the first-level seedling absorbs moisture.

[0039] In another specific embodiment, a highly absorbent material is wrapped around the base of the first-stage seedling. The highly absorbent material may be, for example, a hydrophilic gel and / or a highly absorbent resin (abbreviated as high molecular SAP), preferably a highly absorbent resin. The highly absorbent resin may be, for example, a highly absorbent resin (abbreviated as high molecular SAP) used in baby diapers, which is made of starch and acrylate as main raw materials. Specifically, the highly absorbent material may be sewn into a non-woven bag with small holes (the aperture of the small holes should ensure that water molecules can pass smoothly but the highly absorbent material will not leak out) to form a flat belt-shaped water-absorbing device, and then the water-absorbing device may be wrapped around the base of the first-stage seedling, and then tied to the base of the first-stage seedling with a rope or cable tie; in this way, after the moisture in the air reaches the base of the first-stage seedling, it will be absorbed by the highly absorbent material, thereby avoiding the aging caused by the sprouting of adventitious roots after the first-stage seedling absorbs moisture.

[0040] Further preferably, the strawberry seedling raising method provided by the present invention may also include spraying a rooting inhibitor at the base of the secondary sub-seedlings, and / or the tertiary sub-seedlings, and / or the quaternary sub-seedlings, and after the solvent in the rooting inhibitor has evaporated, arranging the above-mentioned device for preventing the first-level sub-seedlings from absorbing water at the base of the secondary sub-seedlings, and / or the tertiary sub-seedlings, and / or the quaternary sub-seedlings.

[0041] Through the above operation, the first-level seedlings (as well as the second-level seedlings, third-level seedlings, and fourth-level seedlings subsequently generated) grown on the mother seedlings can be fully prevented from absorbing water, resulting in the germination of adventitious roots and causing aging, thereby increasing the number and efficiency of mother seedling cultivation, and facilitating the unification of the seedling age of the first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings, thereby facilitating the subsequent management and cultivation of strawberry production seedlings, reducing management costs, and improving economic benefits.

[0042] According to the present invention, the method further comprises: after the seedlings are cut off from the mother seedlings, water is supplied to the roots of the seedlings to promote rooting of the seedlings; the operation may be any of the following:

[0043] Method 1: Insert the base of the seedlings (including first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings) cut from the mother seedlings into the mesh of a net (such as a net woven from nylon rope or straw rope), and then place them on the flowing nutrient solution so that the base of the seedlings touches the water surface.

[0044] This method allows water to only contact the base of the seedlings, making it easier for the seedlings to take root, and the base of each seedling can fully obtain water, avoiding uneven watering caused by drip irrigation tapes, and the problem of drip irrigation tapes scalding seedlings in summer; it also avoids the infection of seedlings caused by top spray watering. Moreover, the flowing nutrient solution can also be replaced or disinfected at any time to avoid the occurrence of soil-borne diseases. Generally, after 10-15 days, the seedlings can take root. As the roots of the seedlings grow, the water level can be appropriately lowered so that the middle and lower parts of the roots are immersed in water. This not only saves water, because the water surface is farther away from the leaves of the seedlings, but also effectively reduces the probability of water-borne diseases. Furthermore, the soaking time can also be controlled, for example, only between 6 am and 18 pm, and soaking for 8-20 minutes every 1 hour.

[0045] Method 2: Insert the base of the seedlings (including first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings) cut from the mother seedlings into a foam board pre-set with through holes. In order to better fix the base of the seedlings, soft materials such as sponges can also be wrapped around the base of the seedlings. Then, place the foam board filled with seedlings on the flowing nutrient solution so that the base of the seedlings contacts the water surface. In order to stabilize the position of the foam board and the depth of the nutrient solution, two sticks of appropriate weight can be set above the foam board to press the foam board, or a heavy object can be hung on the foam board to press the foam board. This method can also make the water only contact the base of the seedlings, so that the seedlings can take root, and the base of each seedling can fully obtain water, avoiding uneven watering caused by drip irrigation belts, and the problem of scalding seedlings with drip irrigation belts in summer; at the same time, it also avoids the infection of seedlings caused by top spraying water. In addition, the flowing nutrient solution can also be replaced or disinfected at any time to avoid the occurrence of soil-borne diseases.

[0046] Method 3: Plant the seedlings (including first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings) cut from the mother seedlings into a plug tray, which contains a substrate containing nutrients for strawberry growth. Water the plug tray with seedlings every day (or immerse the plug tray in clean water and take it out of the water after the water fully soaks the substrate), and then place the plug tray in the greenhouse for normal cultivation and rooting. This method can also make the water only contact the base of the seedlings, which is convenient for the seedlings to take root, and the base of each seedling can fully obtain water, avoiding uneven watering caused by drip irrigation belts, and the problem of drip irrigation belts scalding seedlings in summer; it also avoids the infection of seedlings caused by top spraying. In addition, the flowing nutrient solution can be replaced or disinfected at any time to avoid the occurrence of soil-borne diseases.

[0047] The strawberry seedling raising method provided by the present invention is described below by taking a specific embodiment as an example.

[0048] The various reagents, materials, etc. used in the following examples, unless otherwise specified, are all products that can be obtained from commercial channels; the various tests and detection methods used in the following examples, unless otherwise specified, are all conventional tests and detection methods in the art and can be obtained from textbooks, reference books or academic journals.

[0049] Example 1

[0050] The composition of the root inhibitor used in this embodiment is as follows:

[0051] The tannin concentration is 0.55 g / L, the rosin (plant resin) concentration is 280 g / L, the 6-BA concentration is 2 mg / L, the pH is adjusted to 5.6 using citric acid, and the solvent is (by volume): 98% ethanol and 2% water.

[0052] In the greenhouse, the strawberry variety "Hongyan" is propagated by the runner propagation method.

[0053] On the 3rd, 10th, 15th and 25th day after the first-level seedlings grown on the mother seedlings grow one cotyledon, the above-mentioned rooting inhibitor is sprayed once at the base of the first-level seedlings, 5 mL each time.

[0054] On the 3rd, 10th and 20th day after the secondary seedlings grown on the mother seedlings grew one cotyledon, the above-mentioned rooting inhibitor was sprayed once at the base of the secondary seedlings, 7 mL each time.

[0055] On the 3rd, 8th and 12th day after the tertiary seedlings grown on the mother seedlings grow one cotyledon, the above-mentioned rooting inhibitor is sprayed once at the base of the tertiary seedlings, 7 mL each time.

[0056] On the 3rd, 6th and 10th day after the quaternary seedlings grown on the mother seedlings grow one cotyledon, spray the base of the quaternary seedlings with the above-mentioned rooting inhibitor once, 8 mL each time.

[0057] At the same time, each time the seedlings (including first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings) are sprayed with the rooting inhibitor and after the solvent has evaporated, a water absorbing device is wrapped at the base of the seedlings, the inner layer of the water absorbing device is a dry sponge, and the outer layer is a montmorillonite desiccant wrapped in a non-woven bag. The above-mentioned water absorbing device is replaced with a new one each time the rooting inhibitor is sprayed.

[0058] The results showed that on the 12th day after the first-level seedlings grew a cotyledon, about 80% of the mother seedlings on the second-level seedlings grew a cotyledon; on the 23rd day after the first-level seedlings grew a cotyledon, about 80% of the mother seedlings on the third-level seedlings grew a cotyledon; on the 35th day after the first-level seedlings grew a cotyledon, about 80% of the mother seedlings on the fourth-level seedlings grew a cotyledon. Every time the water absorption device was replaced, it was found that there were no aerial roots at the base of the seedlings.

[0059] On the 45th day after the first-level seedlings grow a cotyledon, the first-level seedlings have 2-4 leaves per heart, the second-level and third-level seedlings mostly have 2-3 leaves per heart, and the fourth-level seedlings mostly have 1 leaf per heart, reaching the standard of being cut and rooted. And at this time, it can be found that the first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings generally have 1 to 4 functional leaves, grow robustly, have no diseases and insect pests, have bright green leaves, and have smooth stem bases without aerial roots. Figure 1 The figure shows the first-level seedlings on the 45th day after they have grown a cotyledon. It can be found that the first-level seedlings are growing well and strong, and no aerial roots appear at the base. Figure 2 The figure shows the situation of the second-level seedlings on the 45th day after the first-level seedlings have grown a cotyledon. It can be found that the second-level seedlings are growing well and strong, and there are no aerial roots at the base; Figure 3 The figure shows the situation of the third-level seedlings on the 45th day after the first-level seedlings have grown a cotyledon. It can be found that the third-level seedlings are growing well and strong, and there are no aerial roots at the base; Figure 4 The figure shows the situation of the fourth-level seedlings 45 days after the first-level seedlings grew a cotyledon. It can be found that the fourth-level seedlings are growing well and are strong, and there are no aerial roots at the base.

[0060] Insert the bases of the first-level, second-level, third-level, and fourth-level seedlings into the mesh of the nylon net, and then place them on the flowing nutrient solution so that the base of the seedlings touches the water surface. After 10-15 days, you can find that the base of the seedlings begins to take root; as the roots grow, lower the water level of the nutrient solution so that the middle and lower parts of the roots are immersed in the nutrient solution. After 60 days, you will find that the roots of the seedlings are already dense and 6-8cm long, and can be used for transplanting as production seedlings.

[0061] Comparative Example

[0062] The operation of this comparative example is different from that of the above-mentioned embodiment 1 only in that the above-mentioned rooting inhibitor is no longer sprayed, the water absorption device of embodiment 1 is not wrapped around the base of the seedling, and the root of the seedling is no longer watered subsequently, and other operations are the same.

[0063] The results showed that obvious aerial roots appeared at the bases of the first-level seedlings, second-level seedlings, third-level seedlings and fourth-level seedlings, and the number of aerial roots at the bases of the first-level seedlings, second-level seedlings, third-level seedlings and fourth-level seedlings decreased successively, which may be related to the time when the seedlings germinated; in addition, the growth and robustness of the first-level seedlings, second-level seedlings, third-level seedlings and fourth-level seedlings were significantly lower than those of the seedlings in Example 1, and the seedlings (especially the first-level seedlings and second-level seedlings that sprouted first) showed obvious aging. Figure 5 The figure shows the situation of the second-level seedlings on the 30th day after the first-level seedlings grew a cotyledon, without spraying the above-mentioned rooting inhibitor and without wrapping the water absorption device of Example 1 around the base of the seedlings. It can be found that the stems of the second-level seedlings have obvious aging phenomena, and the aerial roots at the base of the seedlings are very obvious and numerous. Figure 6 The figure shows the situation of the first-level seedlings on the 45th day after they have grown a cotyledon, without spraying the above-mentioned rooting inhibitor and without wrapping the water absorption device of Example 1 at the base of the seedlings. It can be found that the aging phenomenon of the stems of the first-level seedlings is more obvious, and the aerial roots at the base of the seedlings are more obvious and more numerous; it is not suitable for rooting and then used as a production seedling.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A strawberry seedling raising method, characterized in that: The method comprises the following steps: after the first-stage seedlings are grown on the mother seedlings, the first-stage seedlings are subjected to an operation of preventing the first-stage seedlings from taking root; wherein, after the first-stage seedlings are grown on the mother seedlings, the first-stage seedlings are subjected to an operation of preventing the first-stage seedlings from taking root, comprising: spraying a rooting inhibitor on the base of the first-stage seedlings; The rooting inhibitor contains the following components: Tannin, concentration is 0.4-0.7g / L; Plant resin, concentration is 200-320g / L; 6-BA, concentration 1.6-2.6 mg / L; The solvent is: ethanol 90%-98%, water 2%-10%; The pH of the rooting inhibitor is 5.6-6.2; The application methods of spraying root inhibitors at the base of the first-level seedlings include: After the first-level seedlings grow one cotyledon, spray the base of the first-level seedlings 3-4 times, 3-8 mL of the rooting inhibitor each time; The strawberry seedling raising method also includes: After the secondary seedlings grown on the mother seedlings grow one cotyledon, spraying the base of the secondary seedlings 2-3 times, 4-10 mL of the rooting inhibitor each time; After the tertiary seedlings grown on the mother seedlings grow one cotyledon, spraying the base of the tertiary seedlings 2-3 times, each time with 5-10 mL of the rooting inhibitor; After the fourth-level seedlings grown on the mother seedlings grow one cotyledon, spray the base of the fourth-level seedlings 2-3 times, each time with 5-10 mL of the rooting inhibitor; The strawberry seedling raising method also includes: Spraying the rooting inhibitor at the base of the first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings, and after the solvent in the rooting inhibitor has evaporated, setting a device at the base of the first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings to prevent the first-level seedlings, second-level seedlings, third-level seedlings, and fourth-level seedlings from absorbing water; The operation of arranging the device for preventing the seedlings from absorbing water at the base of the first-level seedlings, the second-level seedlings, the third-level seedlings, and the fourth-level seedlings comprises: wrapping the base of the first-level seedlings, the second-level seedlings, the third-level seedlings, and the fourth-level seedlings with a dry sponge or a highly absorbent material; The highly water-absorbent material is a highly water-absorbent resin or a water-absorbent gel.

2. The strawberry seedling raising method according to claim 1, wherein: The rooting inhibitor contains the following components: Tannin, concentration 0.45-0.65g / L; Plant resin, concentration is 240-300g / L; 6-BA, concentration is 1.8-2.4 mg / L; The solvent is: ethanol 90%-98%, water 2%-10%.

3. The strawberry seedling raising method according to claim 1, wherein: The rooting inhibitor contains the following components: Tannin, concentration 0.55 g / L; Plant resin, with a concentration of 280 g / L; the plant resin is rosin; 6-BA, concentration is 2 mg / L.

4. The strawberry seedling raising method according to any one of claims 1 to 3, characterized in that: Use organic acids to adjust the pH of root inhibitors; The organic acid is at least one of oxalic acid, malic acid and citric acid.

5. The strawberry seedling raising method according to claim 4, characterized in that: On the 2nd to 4th day, 9th to 12th day, 14th to 16th day, and 22nd to 28th day after the first-level seedlings grow a cotyledon, spraying the base of the first-level seedlings once, each time with 3-8 mL of the rooting inhibitor; On the 2nd to 4th day, 9th to 12th day, and 18th to 22nd day after the secondary seedlings grow a cotyledon, spraying the base of the secondary seedlings once, each time with 4 to 10 mL of the rooting inhibitor; On the 2nd to 4th day, the 7th to 9th day, and the 10th to 14th day after the tertiary seedlings grow a cotyledon, spraying the base of the tertiary seedlings once, each time with 5 to 10 mL of the rooting inhibitor; On the 2nd to 4th day, 5th to 7th day, and 8th to 12th day after the quaternary seedlings grow a cotyledon, 5-10 mL of the rooting inhibitor is sprayed on the base of the quaternary seedlings once each time.

6. The strawberry seedling raising method according to claim 4, characterized in that: On the 3rd, 10th, 15th and 25th day after the first-level seedlings grow one cotyledon, spraying the base of the first-level seedlings with 5 mL of the rooting inhibitor each time; On the 3rd, 10th and 20th day after the secondary seedlings grow one cotyledon, spray the base of the secondary seedlings once, 7 mL of the rooting inhibitor each time; On the 3rd, 8th and 12th day after the tertiary seedlings grow a cotyledon, spray the base of the tertiary seedlings once, 7 mL of the rooting inhibitor each time; On the 3rd, 6th and 10th day after the quaternary seedlings grow one cotyledon, 8 mL of the rooting inhibitor is sprayed on the base of the quaternary seedlings once each time.

7. The strawberry seedling raising method according to claim 4, characterized in that: A circle of water absorption device is arranged on the outer side of the dry sponge, and the water absorption device is a desiccant wrapped in a non-woven bag with small holes.

8. The strawberry seedling raising method according to claim 7, characterized in that: The desiccant is a chemical desiccant and / or a physical desiccant; The chemical desiccant is at least one selected from quicklime, calcium chloride and calcium sulfate; The physical desiccant is at least one selected from silica gel, activated alumina and montmorillonite desiccant.

9. The strawberry seedling raising method according to claim 8, characterized in that: The method further comprises: after the seedlings are cut off from the mother seedlings, water is supplied to the roots of the seedlings to promote the rooting of the seedlings; The sub-seedlings include first-level sub-seedlings, second-level sub-seedlings, third-level sub-seedlings, and fourth-level sub-seedlings.

10. The strawberry seedling raising method according to claim 9, characterized in that: After the seedlings are cut off from the mother seedlings, water is supplied to the roots of the seedlings to promote rooting of the seedlings, which includes any one of the following methods: Method 1: Insert the base of the seedling cut from the mother seedling into the mesh of the net, and then place it on the flowing nutrient solution so that the base of the seedling touches the water surface; Method 2: insert the base of the seedlings cut from the mother seedlings into a foam board with through holes pre-set, and wrap soft materials around the base of the seedlings; then place the foam board filled with seedlings on the flowing nutrient solution so that the base of the seedlings touches the water surface; Method three: Plant the seedlings cut from the mother seedlings into a plug tray with a substrate containing nutrients for strawberry growth; water the plug tray with the seedlings thoroughly with clean water every day, or immerse the plug tray in clean water and take it out of the water after the water has fully soaked the substrate, and then place the plug tray in a greenhouse for normal rooting cultivation.

Images