A method for rapid rooting of dragon fruit cuttings based on amino acid lipids

Abstract

This invention relates to the field of plant cultivation technology and discloses a method for rapid rooting of dragon fruit cuttings based on aminoethyl esters. The rooting solution for dragon fruit cuttings consists of the following components: aminoethyl esters, anhydrous ethanol, and water; wherein the solid-liquid ratio of aminoethyl esters to anhydrous ethanol is 1g:5mL; and the concentration of aminoethyl esters in the rooting solution is 6.25-100mg / L. When the rooting solution containing aminoethyl esters is used for root irrigation of dragon fruit cuttings, it can significantly promote root development, increasing the number of roots by 127.4%-141.1% compared to the water control, while also resulting in longer roots, a larger total absorption area, and a 100% transplant survival rate. The method of rapid rooting of dragon fruit cuttings is simple to operate, low in cost, safe and free of pesticide damage. It effectively solves the industry problems of low root quantity, poor quality and unstable survival rate in dragon fruit seedling cultivation, and is suitable for large-scale promotion and application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant cultivation, in particular to a pitaya cutting rapid rooting seedling raising method based on amaranth lipid. BACKGROUND

[0002] Pitaya belongs to Cactaceae, and is an important tropical and subtropical economic fruit. It is widely planted because of its high nutritional value and good economic benefits. Main varieties such as Jindu No. 1 and Dahong are mostly propagated by cutting to meet the demand of large-scale planting. However, there are some technical bottlenecks in the process of pitaya cutting seedling, which seriously restricts the efficient development of the industry. Specifically, (1) pitaya is a shallow-rooted plant, its stem is a succulent stem, and its root system is mainly composed of adventitious roots. Under conventional cutting conditions, the root system produced at the base of the cutting is often small in number, sparse in fibrous roots, and weak in root activity, making it difficult to form a developed root group; (2) due to poor initial root development, the absorption capacity of water and nutrients of the cutting seedling after transplanting is limited, resulting in a long slow-growing period and unstable survival rate, especially under adverse conditions (such as drought and high temperature), the weak seedling phenomenon is particularly prominent, which directly affects the uniformity of orchard establishment and early yield.

[0003] To solve the above problems, plant growth regulators are often used to promote rooting in production. Currently, the most commonly used ones include indole-3-butyric acid, potassium indole-3-butyrate, sodium naphthaleneacetate and sodium complex nitrophenol, etc. However, indole-3-butyric acid and potassium indole-3-butyrate are broad-spectrum rooting agents, and there is no unified concentration standard for their use in pitaya. If the concentration is too low, the effect will not be significant, and if the concentration is too high, it will easily inhibit root growth and even cause rot at the base of the cutting. Sodium naphthaleneacetate can promote rooting, but it often leads to short and deformed roots, and the number of fibrous roots does not increase significantly. Moreover, it has poor safety and high risk of phytotoxicity. Sodium complex nitrophenol, as a cell activator, often has insufficient and unstable rooting effect. For example, CN 10734749 A discloses a method for rapid rooting of pitaya seedling, which uses conventional rooting powder indole-3-butyric acid potassium and sodium naphthaleneacetate to promote rooting. The natural callus rooting period of pitaya is as long as 20-40 days, and the efficiency is low. Therefore, the effect of traditional hormone regulators in pitaya cutting rooting is unstable.

[0004] In addition, CN 109168684 A provides a method for improving the rapid rooting of dragon fruit stem segments, which adopts double soaking treatment of Chinese herbal medicine extract and hormone rooting solution, and is assisted by physical means such as ozone and infrared rays to comprehensively promote rooting, but the preparation process of the Chinese herbal medicine extract is extremely complex, involving multiple processes such as traditional Chinese medicine decoction, microbial fermentation and enzymolysis, which is high in cost and difficult to promote on a large scale; CN 107493868 A provides a seedling raising method for rapid rooting of dragon fruit cuttings, which disinfects the cuttings by potassium permanganate and uses a sand soil organic fertilizer mixed substrate, and combines simple water and fertilizer management to realize low-cost seedling raising, which is traditional and conventional, and the rooting effect is general, and the rooting number and rooting quality are limited; CN 107400004 A provides a seedling raising substrate for promoting the rooting of dragon fruit and a preparation method thereof, which designs a three-layer (buffer, nutrient, and ventilation) composite substrate and provides a precise nutrient ratio to create the best physical and chemical environment for dragon fruit seeds or seedlings, but the preparation process of the composite substrate is extremely complex, involves fermentation of multiple raw materials, has a long cycle (15-18 days), is high in cost, and focuses on seedling raising, and the rooting effect of cuttings is not clear, the substrate composition is fixed, the flexibility is poor, and it is not easy to adjust. SUMMARY

[0005] The present application aims to at least solve one of the above-mentioned technical problems in the prior art. To this end, one of the objects of the present application is to provide a dragon fruit cutting seedling rooting solution.

[0006] A second object of the present application is to provide a preparation method of the dragon fruit cutting seedling rooting solution.

[0007] A third object of the present application is to provide a seedling raising method for rapid rooting of dragon fruit cuttings.

[0008] To achieve the above-mentioned objects, the technical solution adopted by the present application is:

[0009] The first aspect of the present application provides a dragon fruit cutting seedling rooting solution, which is composed of the following components: amaranth fat, anhydrous ethanol and water.

[0010] The solid-liquid ratio of the amaranth fat to the organic solvent is 1 g: 5 mL; the concentration of the amaranth fat in the dragon fruit cutting seedling rooting solution is 6.25-100 mg / L.

[0011] In some embodiments of the present application, the amaranth fat is 98% amaranth fat raw powder.

[0012] In some embodiments of the present application, the concentration of the amaranth fat in the dragon fruit cutting seedling rooting solution is 6.25-50 mg / L.

[0013] In some preferred embodiments of the present application, the concentration of the Amaranth in the rooting solution for pitaya cutting seedlings is 6.5-12.5 mg / L.

[0014] The second aspect of the present application provides a preparation method of the rooting solution for pitaya cutting seedlings according to the first aspect of the present application, comprising the following steps:

[0015] The Amaranth is dissolved in anhydrous ethanol and then diluted with water to obtain the rooting solution for pitaya cutting seedlings.

[0016] In some embodiments of the present application, the process of dissolving the Amaranth in anhydrous ethanol and diluting with water is assisted by stirring.

[0017] Specifically, the Amaranth raw powder has poor water solubility and cannot guarantee the effect when used directly. The method of dissolving in anhydrous ethanol first and then diluting with water can ensure that the Amaranth is completely dissolved to form a solution, and the concentration of anhydrous ethanol after dilution is extremely low, which is safe for plants, ensures the uniformity and bioavailability of the effective ingredient, and is low in cost, simple in operation, and suitable for on-site preparation in agricultural production.

[0018] The third aspect of the present application provides a seedling raising method for rapid rooting of pitaya cutting, comprising the following steps:

[0019] S1, cutting the base of the pitaya cutting seedling to the woody part, air-drying, and planting into the seedbed after the cut part forms a wax film;

[0020] S2, using the rooting solution for pitaya cutting seedlings according to the first aspect of the present application to perform root irrigation treatment on the pitaya cutting seedling.

[0021] Specifically, the cut layer exposes the cambium cells, which is more conducive to differentiation into roots, and air-drying to form a wax film is conducive to preventing rotting and ensuring the treatment effect of the rooting solution for pitaya cutting seedlings.

[0022] In some embodiments of the present application, the air-drying time is 2-4 days.

[0023] In some embodiments of the present application, the length of the cut part is 2-3 cm.

[0024] In some embodiments of the present application, the seedbed substrate comprises a mixture of peat, perlite and coconut husk with a mass ratio of (2.4-3.6):(0.8-1.2):1.

[0025] In some preferred embodiments of the present application, the seedbed substrate comprises a mixture of peat, perlite and coconut husk with a mass ratio of (2.7-3.3):(0.9-1.1):1.

[0026] Specifically, the seedbed substrate can provide good air permeability and water retention, avoid waterlogging and root rot, and provide ideal physical space for the growth of new roots, and synergistically enhance the physiological effect of the pitaya cutting seedling rooting solution.

[0027] In some embodiments of the present application, the pH value of the seedbed substrate is 6.0-6.5.

[0028] In some embodiments of the present application, the water content of the seedbed substrate is 50wt%-70wt%.

[0029] In some preferred embodiments of the present application, the water content of the seedbed substrate is 55wt%-65wt%.

[0030] In some embodiments of the present application, the length of the pitaya cutting seedling is 16-24cm.

[0031] In some preferred embodiments of the present application, the length of the pitaya cutting seedling is 18-22cm.

[0032] In some embodiments of the present application, the dosage of the pitaya cutting seedling rooting solution is 80-120mL / plant.

[0033] In some preferred embodiments of the present application, the dosage of the pitaya cutting seedling rooting solution is 90-110mL / plant.

[0034] In some embodiments of the present application, the frequency of the root irrigation treatment is 6-8 days / time.

[0035] In some preferred embodiments of the present application, the frequency of the root irrigation treatment is 2 times, the first time is on the day of planting the seedbed, and the second time is on the 7th day after planting the seedbed.

[0036] Specifically, the root irrigation treatment instead of foliar spraying can directly deliver the medicament to the root zone, allowing the base wound and potential root primordia to directly soak in the medicament solution, achieving the highest absorption efficiency and the most direct effect; the treatment on the day of planting the seedbed directly provides strong stimulation at the initial moment of the rooting signal starting; the treatment on the 7th day provides secondary reinforcement when the drug effect may be weakened, providing support for the continuous rooting process, and ensuring the persistence and stability of the rooting effect.

[0037] In some embodiments of the present application, the period of seedling culture is 15-25 days.

[0038] In some preferred embodiments of the present application, the period of seedling culture is 18-20 days.

[0039] The basic principle of the present application is as follows:

[0040] The dragon fruit cutting seedling rooting solution provided by the present application takes DA-6 as the main component: (1) after DA-6 is absorbed by plants, the level of endogenous auxin (IAA) in the plants can be significantly improved, and the auxin is the most critical hormone for controlling the occurrence and development of the root system, and the concentration peak of the auxin can directly induce the formation of the root primordium; the traditional method directly externally applies the endogenous auxin (such as indole acetic acid), but the exogenous IAA is unstable and easy to be degraded, and the dosage is difficult to control, and the growth is easy to be inhibited, and the present application ingeniously uses DA-6 to stimulate the production of the required endogenous auxin of the plants, the promotion of the endogenous hormone is more stable, persistent and better in physiological compatibility, so that the rooting signal is started more efficiently and more safely; (2) DA-6 can improve the chlorophyll content of the leaves and significantly enhance the photosynthesis efficiency, the carbohydrates generated by the photosynthesis are the basis and energy source for the root system construction, through the root irrigation treatment, the whole plant is in a high-energy physiological state, more photosynthetic products are transported to the base, sufficient material and energy guarantee is provided for the germination and elongation of the adventitious roots, and more and stronger roots are promoted to grow; (3) the cutting process is a stress for the plants, and a large amount of active oxygen (ROS) is generated to harm the cells, DA-6 can activate the activities of antioxidant enzymes such as superoxide dismutase (SOD) and peroxidase (POD), the oxidation damage of the cutting seedlings is reduced, the cell activity at the base wound is protected, a more stable and healthy internal environment is created for the smooth differentiation and growth of the root primordium, and the success rate and uniformity of the rooting are improved.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] The dragon fruit cutting seedling rooting solution provided by the present application is a low-concentration (6.25-12.5 mg / L) DA-6 ethanol-water solution, when used for the root irrigation treatment of the dragon fruit cutting seedlings, the rooting of the root system can be extremely significantly promoted, the number of roots is increased by 127.4%-141.1% compared with the water control, the roots are longer and the total absorption area is larger, and the transplanting survival rate reaches 100%. The dragon fruit cutting rapid rooting seedling raising method based on the dragon fruit cutting seedling rooting solution is simple and convenient to operate, low in cost, safe and free of drug damage, effectively solves the industry problems of few roots, poor quality and unstable survival rate in the dragon fruit seedling raising, and is suitable for large-scale popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 The rooting situation of the dragon fruit cutting seedlings in the comparative example 1;

[0044] Figure 2 The rooting situation of the dragon fruit cutting seedlings in the example 1;

[0045] Figure 3 The rooting situation of the dragon fruit cutting seedlings in the example 2;

[0046] Figure 4 For rooting of the piton cutting seedlings of dragon fruit in Example 3;

[0047] Figure 5 For rooting of the piton cutting seedlings of dragon fruit in Example 4;

[0048] Figure 6 For rooting of the piton cutting seedlings of dragon fruit in Example 5;

[0049] Figure 7 For comparison of the number of new roots of the piton cutting seedlings of dragon fruit in Examples 1-5 and Comparative Example 1. DETAILED DESCRIPTION

[0050] The content of the present application is further illustrated in detail by specific examples. The raw materials, reagents or devices used in the examples and comparative examples can be obtained from conventional commercial channels or can be obtained by the prior art methods, unless otherwise specified. Unless otherwise specified, the test or test method is the conventional method in the art.

[0051] Example 1

[0052] The present example provides a seedling raising method for rapid rooting of piton cutting of dragon fruit, and the steps are as follows:

[0053] S11, 18 healthy and disease-free piton cutting seedlings of Jindu No. 1 dragon fruit with a length of about 20 cm were taken, the base succulent part was cut and trimmed to expose the woody part of 2-3 cm, and then dried for 3 days. After a layer of wax film was formed on the cut and trimmed part, the seedlings were planted in the seedbed. The seedbed substrate was a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1. The pH of the seedbed substrate was 6.0-6.5, and the water content was 60wt%.

[0054] S21, under stirring, 98% aminoglycoside raw powder was dissolved in anhydrous ethanol at a solid-liquid ratio of 1g:5mL, and then water was added to constant volume to obtain a rooting solution for piton cutting seedlings of dragon fruit with a concentration gradient of 6.25mg / L;

[0055] S22, the rooting solution for piton cutting seedlings of dragon fruit in step S21 was used for root irrigation treatment of Jindu No. 1 dragon fruit piton cutting seedlings, and the dosage was 100mL / plant. Root irrigation was performed once on the day of planting in the seedbed and on the 7th day after planting in the seedbed, respectively. The piton cutting seedlings were placed in outdoor open cultivation to simulate field cultivation conditions, and the cultivation period was 20 days.

[0056] Example 2

[0057] The present example provides a seedling raising method for rapid rooting of piton cutting of dragon fruit, and the steps are as follows:

[0058] S11, take 18 strains of 20 cm or so healthy and no disease and pest of Jindu No. 1 pitaya cutting seedlings, cut the base of the flesh, expose 2-3 cm of the wood part, dry for 3 days, and then plant into the seedbed after the cut part forms a layer of wax film. The seedbed substrate is a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1. The pH of the seedbed substrate is 6.0-6.5, and the water content is 60wt%.

[0059] S21, under stirring conditions, dissolve 98% aminoglycoside raw powder in anhydrous ethanol at a solid-liquid ratio of 1g:5mL, then add water to constant volume to obtain a pitaya cutting seedling rooting solution with a concentration gradient of 12.5mg / L;

[0060] S22, use the pitaya cutting seedling rooting solution in step S21 to conduct root irrigation treatment on Jindu No. 1 pitaya cutting seedlings at a dosage of 100mL / plant, and conduct root irrigation once on the day of planting into the seedbed and on the 7th day after planting into the seedbed, respectively. The cutting seedlings are placed in outdoor open cultivation to simulate field cultivation conditions, and the cultivation period is 20 days.

[0061] Example 3

[0062] The present embodiment provides a pitaya cutting rapid rooting seedling raising method, and the steps are as follows:

[0063] S11, take 18 strains of 20 cm or so healthy and no disease and pest of Jindu No. 1 pitaya cutting seedlings, cut the base of the flesh, expose 2-3 cm of the wood part, dry for 3 days, and then plant into the seedbed after the cut part forms a layer of wax film. The seedbed substrate is a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1. The pH of the seedbed substrate is 6.0-6.5, and the water content is 60wt%.

[0064] S21, under stirring conditions, dissolve 98% aminoglycoside raw powder in anhydrous ethanol at a solid-liquid ratio of 1g:5mL, then add water to constant volume to obtain a pitaya cutting seedling rooting solution with a concentration gradient of 12.5mg / L;

[0065] S22, use the pitaya cutting seedling rooting solution in step S21 to conduct root irrigation treatment on Jindu No. 1 pitaya cutting seedlings at a dosage of 100mL / plant, and conduct root irrigation once on the day of planting into the seedbed and on the 7th day after planting into the seedbed, respectively. The cutting seedlings are placed in outdoor open cultivation to simulate field cultivation conditions, and the cultivation period is 20 days.

[0066] Example 4

[0067] The present embodiment provides a pitaya cutting rapid rooting seedling raising method, and the steps are as follows:

[0068] S11, take 18 strains of 20 cm or so healthy and no disease and pest of Jindu No. 1 pitaya cutting seedlings, cut the base of the flesh, expose 2-3 cm of the wood part, dry for 3 days, and then plant into the seedbed after the cut part forms a layer of wax film. The seedbed substrate is a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1. The pH of the seedbed substrate is 6.0-6.5, and the water content is 60wt%.

[0069] S21, under stirring conditions, dissolve 98% aminoglycoside raw powder in anhydrous ethanol at a solid-liquid ratio of 1g:5mL, then add water to constant volume to obtain a pitaya cutting seedling rooting solution with a concentration gradient of 50mg / L;

[0070] S22, use the pitaya cutting seedling rooting solution in step S21 to conduct root irrigation treatment on Jindu No. 1 pitaya cutting seedlings at a dosage of 100mL / plant, and conduct root irrigation once on the day of planting into the seedbed and on the 7th day after planting into the seedbed, respectively. The cutting seedlings are placed in outdoor open cultivation to simulate field cultivation conditions, and the cultivation period is 20 days.

[0071] Example 5

[0072] The example provides a pitaya cutting rapid rooting seedling raising method, and the steps are as follows:

[0073] S11, take 18 strains of 20 cm or so healthy and no disease and pest of Jindu No. 1 pitaya cutting seedlings, cut the base of the flesh, expose 2-3 cm of the wood part, dry for 3 days, and then plant into the seedbed after the cut part forms a layer of wax film. The seedbed substrate is a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1. The pH of the seedbed substrate is 6.0-6.5, and the water content is 60wt%.

[0074] S21, under stirring conditions, dissolve 98% aminoglycoside raw powder in anhydrous ethanol at a solid-liquid ratio of 1g:5mL, then add water to constant volume to obtain a pitaya cutting seedling rooting solution with a concentration gradient of 50mg / L;

[0075] S22, use the pitaya cutting seedling rooting solution in step S21 to conduct root irrigation treatment on Jindu No. 1 pitaya cutting seedlings at a dosage of 100mL / plant, and conduct root irrigation once on the day of planting into the seedbed and on the 7th day after planting into the seedbed, respectively. The cutting seedlings are placed in outdoor open cultivation to simulate field cultivation conditions, and the cultivation period is 20 days.

[0076] Comparative Example 1

[0077] The comparative example provides a pitaya cutting rapid rooting seedling raising method, and the steps are as follows:

[0078] S11, 18 healthy and pest-free pitaya cutting seedlings of about 20 cm in height were taken, the base fleshy part was cut and trimmed to expose the woody part of 2-3 cm, and the cutting seedlings were dried for 3 days. After a layer of wax film was formed on the cut and trimmed part, the cutting seedlings were planted in a seedbed. The seedbed substrate was a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1, the pH of the seedbed substrate was 6.0-6.5, and the water content was 60wt%.

[0079] S21, the cutting seedlings were treated with water for root irrigation, the amount was 100 mL per plant, and the root irrigation was performed once on the day of planting in the seedbed and on the 7th day after planting in the seedbed, respectively. The cutting seedlings were placed in an outdoor open culture to simulate field cultivation conditions, and the culture period was 20 days.

[0080] Comparative Example 2

[0081] The present comparative example provides a pitaya cutting rapid rooting seedling raising method, and the steps are as follows:

[0082] S11, 75 healthy and pest-free pitaya cutting seedlings of about 20 cm in height were taken, and the base fleshy part was cut and trimmed to expose the woody part of 2-3 cm. The cutting seedlings were dried for 3 days. After a layer of wax film was formed on the cut and trimmed part, the cutting seedlings were planted in a seedbed. The seedbed substrate was a mixture of peat, perlite and coconut husk at a mass ratio of 3:1:1, the pH of the seedbed substrate was 6.0-6.5, and the water content was 60wt%.

[0083] S21, the cutting seedlings were treated with water, 160 mg / L potassium indole-3-butyric acid aqueous solution, 125 mg / L indole acetic acid aqueous solution, 5 mg / L sodium complex nitrophenol aqueous solution and 6.25 mg / L pitaya cutting seedling rooting liquid for root irrigation, the amount was 100 mL per plant, and the root irrigation was performed once on the day of planting in the seedbed and on the 7th day after planting in the seedbed, respectively. The cutting seedlings were placed in an outdoor open culture to simulate field cultivation conditions, and the culture period was 20 days.

[0084] The number of newly formed roots of the pitaya cutting seedlings in Examples 1-5 and Comparative Example 1 was counted, and the roots with a length of ≥1 mm were recorded as effective roots.

[0085] Table 1 Number of newly formed roots of pitaya cutting seedlings in Examples 1-5 and Comparative Example 1

[0086]

[0087] Among them, CK is the control group, * represents p <0.05, ** represents p <0.01, compared with CK (t test).

[0088] Table 1 is the number of new roots of pitaya cutting seedlings in Examples 1-5 and Comparative Example 1. As shown in Table 1, the average number of roots of pitaya cutting seedlings in the water control group after 20 days of culture is 7.3 ± 2.1 roots per plant. The average number of roots in the groups treated with different concentrations of pitaya cutting seedling rooting solution is higher than that in the control group, indicating that the pitaya cutting seedling rooting solution provided by the present application has a certain rooting effect. When the concentration of amaranth lipid in the pitaya cutting seedling rooting solution is 6.25 mg / L, the number of roots increases by 127.4%. When the concentration of amaranth lipid is 12.5 mg / L, the number of roots increases by 141.1%. The rooting effect of the pitaya cutting seedling rooting solution at these two concentrations is better. Considering the cost factor, 6.25 mg / L is determined as the optimal concentration of amaranth lipid in the pitaya cutting seedling rooting solution.

[0089] Figure 1 For the rooting of pitaya cutting seedlings in Comparative Example 1, Figure 2 For the rooting of pitaya cutting seedlings in Example 1, Figure 3 For the rooting of pitaya cutting seedlings in Example 2, Figure 4 For the rooting of pitaya cutting seedlings in Example 3, Figure 5 For the rooting of pitaya cutting seedlings in Example 4, Figure 6 For the rooting of pitaya cutting seedlings in Example 5, Figure 7 For the comparison of the number of new roots of pitaya cutting seedlings in Examples 1-5 and Comparative Example 1 (where different letters a, b, c represent significant differences), it can be seen from Table 1 that the pitaya cutting seedling rooting solution provided by the present application has a rooting effect on pitaya cutting seedlings. When the concentration is 6.25 mg / L and 12.5 mg / L, the average number of new roots of cutting seedlings is comparable, and the rooting effect is the best. Figures 1-7

[0090] The average number of roots, average root length, average root length per plant, and transplanting survival rate of pitaya cutting seedlings in Comparative Example 2 were counted, wherein roots with a length of ≥1 mm were counted as effective roots.

[0091] Table 2 Average number of roots, average root length, average root length per plant, and transplanting survival rate of pitaya cutting seedlings in Comparative Example 2

[0092]

[0093] wherein water is the control group, * indicates p <0.05, ** indicates p <0.01, compared with water (t test).

[0094] ​Table 2 is the average root number, average root length, average root length per plant and transplant survival rate of the pitaya cutting seedlings in Comparative Example 2. As can be seen from Table 2, after the pitaya cutting seedlings of Jindu No. 1 are treated with the pitaya cutting seedling rooting solution containing 6.25 mg / L of Al-aminoflex, the average root number of the cutting seedlings is superior to that of the indole-3-butyric acid potassium aqueous solution or sodium nitrophenol aqueous solution treatment group, the average root length is superior to that of the indole-3-butyric acid potassium aqueous solution or indole-3-acetic acid aqueous solution treatment group, and the average root length per plant is superior to that of the indole-3-butyric acid potassium aqueous solution, indole-3-acetic acid aqueous solution or sodium nitrophenol aqueous solution treatment group, indicating that the pitaya cutting seedling rooting solution provided by the present application can achieve a rooting promoting effect superior to traditional hormone-type regulators such as indole-3-butyric acid potassium and indole-3-acetic acid at a lower concentration, has low cost, and can better meet the demand for pitaya cutting seedling raising.

Claims

1. A method for rapid rooting of pitaya cuttings, characterized in that, The method comprises the following steps: S1, cutting the base fleshy part of the pitaya cutting seedling to xylem, air-drying, and then planting into a seedbed after the cut part forms a wax film; S2, performing root irrigation treatment on the pitaya cutting seedling by using a pitaya cutting seedling rooting solution; The pitaya cutting seedling rooting solution is composed of the following components: amaranth fat, anhydrous ethanol, and water; the solid-liquid ratio of the amaranth fat and the anhydrous ethanol is 1g:5mL; the concentration of the amaranth fat in the pitaya cutting seedling rooting solution is 6.25-12.5mg / L; The use amount of the pitaya cutting seedling rooting solution is 80-120mL / plant; the root irrigation treatment is performed 2-3 times, and the frequency is 6-8 days / time.

2. The seedling raising method according to claim 1, characterized by, The pitaya cutting seedling rooting solution is prepared by the following method: dissolving amaranth fat in anhydrous ethanol, and then diluting with water to obtain the pitaya cutting seedling rooting solution.

3. The seedling raising method according to claim 1, characterized by, The length of the pitaya cutting seedling is 16-24cm.

4. The seedling raising method according to claim 1, characterized by, The root irrigation treatment is performed twice, the first time is on the day of planting into the seedbed, and the second time is on the 7th day after planting into the seedbed.

5. The method according to any one of claims 1 to 4, wherein, The seedling growing period is 15-25 days.

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