A method for cultivating amaranth in coral sand soil on islands in the South my country Sea.

Abstract

This invention relates to the field of plant cultivation, and discloses a method for cultivating *Amaranthus emblica* in coral sand soil on islands in the South China Sea. Specifically, *Amaranthus emblica* is propagated by cuttings in coral sand soil on islands in the South my country Sea. A crop salt-tolerant agent is used during cultivation. This agent is prepared by filtering and diluting distillate collected during eucalyptus charcoal production, and then adding potassium salts, proline, polyglutamic acid, and magnesium salts. This invention utilizes distillate from eucalyptus charcoal production as a raw material for the crop salt-tolerant agent, successfully and efficiently cultivating *Amaranthus emblica* in highly saline coral sand soil. Furthermore, the cultivated *Amaranthus emblica* can be harvested in stages, resulting in high yield and good quality.

Description

Technical Field

[0001] This invention relates to a method for cultivating amaranth in coral sand soil on islands in the South my country Sea, within the field of plant cultivation. Background Technology

[0002] Alternanthera bettzickiana (Regel) Nichols. is rich in vitamins, amino acids, and minerals, making it a nutritionally comprehensive plant. In particular, it is very high in superoxide dismutase (SOD), which has benefits such as clearing the liver and improving eyesight, nourishing the liver and kidneys, replenishing essence and qi, clearing dryness and moistening the lungs, resolving phlegm and relieving cough, and promoting urination. The tender shoots and leaves are edible and have a crisp texture. Therefore, Alternanthera bettzickiana is a high-end vegetable. Furthermore, its beautiful leaf shape and vibrant color make it a high-quality horticultural plant for beautifying the environment.

[0003] Amaranth is exceptionally heat-resistant, drought-resistant, salt-resistant, and pest-resistant, making it suitable for cultivation on my country's South China Sea islands, which are characterized by high temperatures, high salinity, and a lack of fresh water. Therefore, successful cultivation of amaranth on these islands will not only improve the island's ecological environment but also provide fresh vegetables for the military and civilians stationed there, thus raising their living standards. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to efficiently cultivate amaranth in coral sand soil with high salt content.

[0005] To solve the above-mentioned technical problems, the present invention first provides a method for cultivating amaranth in coral sand soil on islands in the South China Sea. The method involves propagating amaranth by cuttings in coral sand soil on islands in the South my country Sea. During the cultivation process, a crop salt-tolerant agent is used. The crop salt-tolerant agent is a mixture of potassium salt, proline, polyglutamic acid and magnesium salt, which is obtained by filtering and diluting the distillate collected during the eucalyptus charcoal production process.

[0006] In the above method, the distillate collected during the eucalyptus charcoal production process can be Wuliyuan plant extract, a product of Liaoning Meilishanshui Ecological Environmental Protection Technology Co., Ltd., which is a reddish-brown liquid obtained by filtering the distillate collected during the eucalyptus charcoal production process and can be used as liquid fertilizer.

[0007] In the above method, the crop salt-tolerant agent contains 10% potassium, 5% proline, 5% polyglutamic acid and 5% magnesium by mass percentage.

[0008] In the above method, the crop salt-tolerant agent is prepared according to the following steps: collecting the distillate produced when eucalyptus trees are burned into charcoal, filtering to remove impurities, diluting it with water 200-300 times, and adding potassium chloride, proline, polyglutamic acid and magnesium chloride according to the concentration, and mixing.

[0009] In the above method, the crop salt tolerance agent is applied by spraying with water during the seedling stage and two days after each harvest.

[0010] In the above method, the application rate of the crop salt-tolerant agent is 2 catties / mu / time.

[0011] In the above method, the cutting is specifically taken from the middle and upper part of the tender stem tip as cuttings. The cuttings are 5-10cm long and have 3-5 leaves. When inserting the cuttings, remove 1-2 leaves from the base and insert them at a 45° angle with the leaves exposed.

[0012] In the above method, the plant spacing is 10cm × 20cm.

[0013] The above method also includes fertilization, specifically applying nitrogen, phosphorus and potassium compound fertilizer at a rate of 30 catties / mu as base fertilizer, and then applying top dressing every 20 days after the cuttings have grown 4 leaves, with a top dressing amount of 8 catties / time / mu.

[0014] The cultivation method described above also includes weeding.

[0015] The above method also includes staged harvesting, with each harvest consisting of tender shoots 8-12cm long, retaining 2-3 leaves at the base, and applying compound fertilizer 2-3 days after harvest.

[0016] The present invention also provides the above-mentioned crop salt-tolerant agent.

[0017] This invention also provides any one or more of the following applications of the above-mentioned Five-Force Source Plant Liquid:

[0018] A1. Application in the preparation of crop salt-tolerant agents;

[0019] A2. Application in improving soils with high salinity;

[0020] A3. Application in coral sand soil improvement;

[0021] A4. Application in the cultivation of amaranth.

[0022] Compared with existing technologies, this invention utilizes the distilled liquid formed during the eucalyptus charcoal production process as a crop salt-resistant agent, successfully and efficiently cultivating amaranth in coral sand soil with high salt content. Moreover, the cultivated amaranth can be harvested in stages, with high yield and good quality. Attached Figure Description

[0023] Figure 1 The amaranth cuttings were taken from coral sand soil in the South my country Sea in Embodiment 1 of this invention.

[0024] Figure 2 This refers to *Amaranthus variegata* grown to harvest on coral sand soil in the South my country Sea, as described in Example 1 of this invention. Figure 2 The left side represents the control group that did not use crop salt tolerance agents. Figure 2 The right side shows the crop salt tolerance treatment group. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to specific embodiments. The given embodiments are merely illustrative of the invention and not intended to limit its scope. The embodiments provided below can serve as a guide for further improvements by those skilled in the art and do not constitute a limitation on the invention in any way.

[0026] Unless otherwise specified, the experimental methods used in the following examples are conventional methods, performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Unless otherwise specified, the materials and reagents used in the following examples are commercially available.

[0027] Example 1

[0028] The method for preparing crop salt tolerance agent in this embodiment is as follows:

[0029] The Wuliyuan plant extract (purchased from Liaoning Meilishanshui Ecological Environmental Protection Technology Co., Ltd., prepared by collecting the distillate produced when burning eucalyptus charcoal and filtering to remove impurities) was diluted 200 to 300 times with water, and then potassium chloride, proline, polyglutamic acid and magnesium chloride were added to obtain a crop salt-tolerant agent. The crop salt-tolerant agent contains 10% potassium, 5% proline, 5% polyglutamic acid and 5% magnesium by mass percentage.

[0030] The method for cultivating amaranth in coral sand soil on islands in the South my country Sea according to the present invention is as follows:

[0031] 1Land consolidation

[0032] In October 2020, tests were conducted on Yongxing Island in the South my country Sea.

[0033] The coastal mudflats of the islands in the South my country Sea are formed naturally or by deep-sea dredging and reclamation. They are coral sand soil with high salt content, and the local temperature is high and freshwater is scarce.

[0034] After removing large stones (including large coral stones) from the coral sand soil, soil samples were collected and prepared according to GB65 / T 602.1-2001; the total water-soluble salt content of the soil was determined according to NYT 1121.16-2006. An "S"-shaped sampling route was used, selecting 10 sampling points to prepare a composite sample. The sample was then air-dried in a ventilated area. After simple grinding, the dried sample was sieved through a 2mm sieve to remove stones. The total salt content of the soil was determined using a conductivity meter. The result showed a total salt content of 2.4%, indicating a high salt content in the selected plot.

[0035] Based on the above test results, compound fertilizer was applied to the coral sand soil at a rate of 30 catties / mu. The compound fertilizer used in this example was a common compound fertilizer with nitrogen, phosphorus, and potassium content of 17% (as N), 17% (as P2O5), and 17% (as K2O), respectively. Ridging was then performed after fertilization.

[0036] 2. Propagation by cuttings

[0037] The amaranth used in this embodiment can be obtained commercially.

[0038] Amaranth is very easy to propagate by cuttings. In October 2020, take cuttings from the upper and middle parts of healthy young stems, 5-10cm long, with 3-5 leaves. Remove 1-2 leaves from the base of the stem before planting. Plant the cuttings at a 45° angle, with the leaves exposed, spacing them 10cm x 20cm apart. Water thoroughly after planting. See photos of the cuttings after planting. Figure 1 Water seedlings frequently but in small amounts.

[0039] 3. Water and fertilizer management

[0040] Water according to soil conditions. Combine watering with topdressing; apply compound fertilizer after the cuttings have grown four leaves, repeating every 20 days at a rate of 8 catties / mu. Before harvest, spray a crop salt-tolerant agent with irrigation water at a rate of 2 catties / mu.

[0041] The application of crop salt tolerance agents was set up in two treatment groups:

[0042] (1) Crop salt tolerance agent treatment group: During the seedling stage (in order to enhance the salt tolerance of the seedlings and improve the survival rate) and two days after each harvest, crop salt tolerance agent was sprayed with water using a micro-spraying system. The amount of crop salt tolerance agent sprayed was 2 catties / mu / time.

[0043] (2) Control group: During the seedling stage and two days after each harvest, the crop was watered normally using a micro-spraying system without applying crop salt-tolerant agents.

[0044] Each group of treatments is set to 3 repetitions.

[0045] 4 Other field management

[0046] 1) Weeding: Weeds between plants and rows can be removed manually.

[0047] 2) Pest and disease control: Amaranth grown in the coral sandy soil of islands in the South my country Sea is less susceptible to pests and diseases, but aphids may occur during the seedling stage. Because amaranth is highly resistant to pests and diseases, applying a crop salt-tolerant agent (a non-toxic but insect-repellent distillate formed during eucalyptus charcoal production) can effectively prevent pests and diseases.

[0048] 5 gains

[0049] The harvest took place in November 2020.

[0050] At this time, the control group of amaranth that was not treated with crop salt tolerance agents grew slowly (see...). Figure 2 (on the left side), and it aged quickly and the vegetables were of very poor quality, so it was not harvested in November 2020.

[0051] Using crop salt tolerance agents can improve the salt tolerance of amaranth planted in coral sand soil and promote its growth. The crop salt tolerance agent-treated group can be harvested approximately one month after cutting (see...). Figure 2 (On the right side), the standard is to pick tender shoots 8-12cm long. They should not be too long, otherwise it will not only affect the quality of the shoots but also reduce the number of leaf axils from which new shoots can sprout; if the shoots are harvested too short, the yield will decrease. Harvesting should be done in stages. At the first harvest, 2-3 leaves should be retained at the base to ensure that new shoots can sprout from each leaf axil. Apply compound fertilizer 2-3 days after harvest to promote regeneration; cyclic harvesting is possible. A single harvest yields 1200 kg of vegetables per acre, and continuous harvesting is possible, generally every 15-20 days.

[0052] The present invention has been described in detail above. For those skilled in the art, the invention can be practiced in a wide range of ways with equivalent parameters, concentrations, and conditions without departing from its spirit and scope, and without requiring unnecessary experiments. Although specific embodiments have been given, it should be understood that further modifications can be made to the invention. In summary, according to the principles of the invention, this application is intended to include any changes, uses, or improvements to the invention, including changes made using conventional techniques known in the art that depart from the scope disclosed herein. Some of the essential features can be applied within the scope of the following appended claims.

Claims

1. A method for cultivating amaranth in coral sand soil on islands in the South China Sea, characterized in that, The method involves propagating Amaranthus var. mongolica by cuttings in coral sand soil on islands in the South China Sea. During the cultivation process, a crop salt-tolerant agent is used. The crop salt-tolerant agent is a mixture of potassium salt, proline, polyglutamic acid and magnesium salt, which is obtained by filtering and diluting the distillate collected during the eucalyptus charcoal production process. The crop salt-tolerant agent contains 10% potassium, 5% proline, 5% polyglutamic acid and 5% magnesium by weight. The crop salt-tolerant agent is prepared by the following steps: collecting the distillate produced when eucalyptus trees are burned into charcoal, filtering to remove impurities, diluting it with water 200-300 times, and adding potassium chloride, proline, polyglutamic acid and magnesium chloride according to the concentration, and mixing. The cultivation also includes phased harvesting, with each harvest consisting of tender shoots 8-12cm long, retaining 2-3 leaves at the base, and applying compound fertilizer 2-3 days after harvest.

2. The method according to claim 1, characterized in that: The method of applying the crop salt-tolerant agent is to spray it with water during the seedling stage and two days after each harvest of tender shoots of amaranth.

3. The method according to claim 2, characterized in that: The application rate of the crop salt-tolerant agent is 2 catties / mu / time.

4. The method according to claim 1, characterized in that: The cuttings are taken from the middle and upper part of the tender stem tips, 5-10 cm long, with 3-5 leaves. When inserting the cuttings, remove 1-2 leaves from the base and insert them at a 45° angle with the leaves exposed.

5. The method according to any one of claims 1-4, characterized in that: The cultivation also includes fertilization, which involves applying 30 catties / mu of nitrogen, phosphorus, and potassium compound fertilizer as base fertilizer, and then applying top dressing every 20 days after the cuttings have grown 4 leaves, with a top dressing amount of 8 catties / mu.

6. The crop salt-tolerant agent according to any one of claims 1-5.

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