A cultivation method to promote the growth of saplings of old tung trees

Abstract

The application discloses a cultivation method for promoting the growth of small old trees of oil camphor trees, ready-made fertilizer (compound fertilizer + dead camphor) is mixed with natural organic matter to form a good nutrient environment around the plants, through ditching, the soil around the plants is loosened, and the soil porosity around the plants is increased. A black plastic cloth artificial water collection concave pond is formed around the plants, during drought, after rainfall, water in the whole range of the plants flows to the roots of the plants, water collection is increased, and then, when rainfall is sufficient, the land under the plastic cloth can be drained, and the situation that the original soil topography is changed to form a water collection concave pond, but waterlogging affects the growth of the plants is avoided. The black plastic cloth concave pond is shaded and has the function of preventing grass, because of the space, the use of grass prevention cloth for grass prevention is avoided, the plant roots are prevented from floating on the soil and affecting the final growth result.

Description

Technical Field

[0001] This invention relates to the field of tung tree cultivation technology, specifically to a cultivation method for promoting the growth of young, mature tung trees. Background Technology

[0002] The tung tree (scientific name: *Vernicia fordii* (Hemsl.) Airy Shaw) is a deciduous tree belonging to the genus *Vernicia* in the family Euphorbiaceae. As an important economic tree species, the tung tree has wide applications in various fields, including industry and medicine. Its economic value is significant; the tung oil extracted from its seeds is an important industrial oil with excellent drying, waterproofing, and antiseptic properties, widely used in the electronics industry and coatings manufacturing. Furthermore, the tung tree also has medicinal value, possessing heat-clearing and detoxifying properties. It can also improve soil structure and maintain ecological balance, thus having ecological value. In short, the tung tree has wide applications in industry, medicine, and ecology, making it a highly valuable and multifunctional tree species.

[0003] Tung trees are mainly distributed in the vast subtropical regions of my country, with the adjacent areas of Chongqing, Guizhou, Hunan, and Hubei provinces (municipalities) being the central cultivation areas. Tung trees prefer warm, sunny, and moist conditions, but are intolerant of waterlogging and adapt to warm, humid climates. They thrive in areas with an average annual temperature of 15.5–17℃, annual rainfall of 1026–1596 mm, relative humidity of 70%–80%, and more than 1045 hours of sunshine per year. Tung trees prefer calcium-rich soils and grow best in deep, neutral or slightly acidic soils rich in humus, developed from slate, shale, and limestone. They can also grow and bear fruit normally in poor red soil.

[0004] In the cultivation of tung trees, which thrive in moist and fertile soil and are intolerant of weeds, improper site selection or lack of site preparation before planting can result in "small, old trees." These "small, old" tung trees typically refer to those with limited growth, short stature, and slow growth despite their age. Specifically, they are trees that survive but do not grow large (more than two years after sowing, with a ground diameter consistently below 2cm and a height below 1m), and are unable to flower or bear fruit, causing significant losses in production.

[0005] Existing technologies and methods for promoting the growth of young, old tung trees typically suffer from high costs, difficulty in obtaining tools and materials, and unsatisfactory results. To address the growth problems of young, old tung trees efficiently and cost-effectively by focusing on improving water, fertilizer, and weed control, and taking into account the growth characteristics of tung trees, this invention proposes a technical method. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention, through steps such as trenching and loosening the soil, water collection and weed control, and nutrient improvement, effectively solves key issues affecting the normal growth of tung oil trees, such as insufficient water and fertilizer and weed infestation, at a low cost, promoting plant growth and resolving the growth problems of small and old tung oil trees.

[0007] To achieve the above-mentioned technical objectives, the present invention is implemented through the following technical solution:

[0008] A cultivation method for promoting the growth of young, mature tung trees includes the following steps:

[0009] S1. Excavate a ring trench: Based on the slope of the small site for planting tung tree saplings, level the ground around the saplings and excavate a ring trench. The subsoil produced from the excavation of the ring trench is reserved for later use.

[0010] S2. Fertilizing and filling the ring trench: Mix the fertilizer with topsoil rich in organic matter and spread it to a certain depth in the ring trench; cover the fertilizer and topsoil with subsoil until the ring trench is full.

[0011] S3. Make a water collection pond: Cut a rectangular piece of black plastic sheet and cut a round hole in the middle of the rectangular piece; place the plant in the center of the round hole;

[0012] Plant several core stakes and several side stakes around the small old tung tree, with the core stakes located inside the side stakes; wrap and straighten iron wire around the outer perimeter of the top of several side stakes; tie the edge of the round hole to the core stake; stretch the black plastic sheet from the center to the perimeter, fix the edge to the side stakes and iron wire, and tie it with tie wire; remove the wrinkles caused during the stretching operation around the round hole.

[0013] Furthermore, in S1, the slope of the small plot is less than 18°, the ring ditch is a full ring, located 18cm outside the plant diameter; the depth of the ring ditch is 30cm, and the width is greater than 20cm; in S2, the fertilizer is a uniform mixture of 0.2kg potassium sulfate compound fertilizer and 0.8kg tung oil residue, the topsoil is scraped from the perimeter of the small plot and is rich in organic matter, and the application depth is 28cm;

[0014] Furthermore, in S1, the slope of the small planting site is greater than 18°. Before excavating the ring ditch, the area around the small old tree is leveled into a horizontal circular terrace with a diameter of 70cm. The ring ditch is semi-circular or larger than a semi-circular one, with the edge of the ditch located 18cm from the bottom of the plant on the uphill slope. The depth of the ring ditch is 30cm, and the width is 20cm. In S2, the fertilizer is a uniform mixture of 0.2kg potassium sulfate compound fertilizer and 0.8kg tung oil residue. The topsoil is scraped from the area around the small planting site and is rich in organic matter. The application depth is 28cm.

[0015] Furthermore, in S3, the rectangular black plastic sheet is a square with a side length of 1.8m, and the radius of the circular hole is 18cm; the circular hole is located in the center of the rectangular black plastic sheet.

[0016] Furthermore, in S3, the rectangular black plastic sheet is a square with a side length of 1.8m, and the radius of the circular hole is 18cm; the lower edge of the circular hole is 30cm away from the edge of the lower slope black plastic sheet.

[0017] Furthermore, the planting methods for the side stakes and the core stakes in S3 are as follows: there are 4 side stakes, and the 4 side stakes are located at the 4 vertices of a square with a side length of 1.2m; there are 3 core stakes, which are planted in a circular array around the plant in the circular hole.

[0018] Furthermore, in S3, there are 6 side stakes, and the planting method of the side stakes is as follows: 2 side stakes I are symmetrically planted on both sides of the plant at a distance of 38cm from the plant on the downhill side; 2 side stakes II are symmetrically planted on both sides of the plant on the uphill side at a distance of 80cm from the two side stakes I; 3 side stakes III are symmetrically planted on both sides of the plant on the uphill side at a distance of 70cm from the two side stakes II. The two side stakes I, the two side stakes II, and the two side stakes III form a rectangular frame; there are 3 center stakes, and they are planted in a circular array in the circular hole with one plant as the center.

[0019] Furthermore, the vertical distance between the edge of the plastic sheet of the circular hole and the upper surface of the small standing surface is 3cm;

[0020] Furthermore, the black plastic sheet is 0.15mm thick and has a smooth surface; the side stakes are wooden stakes with a diameter of 7-8cm and a length of 55cm, with one end sharpened; the core stake is a wooden stake with a diameter of 5-6cm and a length of 40cm, with one end sharpened; and in S3, each side of the square formed by the iron wire wrapped around several of the side stakes is tied and fixed to the black plastic sheet at three positions with tie wire, and the iron wire is No. 12 iron wire;

[0021] Furthermore, in S3, the wrinkles are generated during the process of flattening the black plastic sheet; the operation of breaking the wrinkles is to cut a notch with scissors around the wrinkled area of ​​the round hole.

[0022] Furthermore, the time for applying the cultivation method described above to promote the growth of sapling tung trees is from November to January of the following year (dormancy period), or during the period of sufficient water.

[0023] The beneficial effects of this invention are:

[0024] In terms of nutrient improvement: ready-made fertilizer (compound fertilizer + tung oil residue) was mixed with natural organic matter (topsoil rich in organic matter) to create a good nutrient environment around the plant; by digging a ring trench, the soil around the plant was loosened, increasing the porosity of the surrounding soil, which is beneficial to root respiration and facilitates the plant's absorption of nutrients and water.

[0025] In terms of water collection and weed control: Firstly, by using edge stakes, center stakes, and black plastic sheeting, a natural rainwater collection pond centered on the plant is formed. During droughts, after rainfall, the rainwater within the entire edge stake area flows to the plant roots, creating a water collection effect and increasing water availability. Secondly, since the terrain under the plastic sheeting has not been significantly altered, it can drain water when rainfall is excessive, avoiding the situation in previous production where altering the original soil terrain to create water collection ponds resulted in water accumulation that affected plant growth.

[0026] Using black plastic sheeting blocks sunlight and prevents weeds from growing around the plant roots, thus achieving a weed-proof effect. This avoids the problem of using weed-proof sheeting that is too close to the ground around the plant roots, causing the plant roots to float in the soil and affecting the final growth result.

[0027] This invention effectively addresses key factors affecting the growth of tung oil trees, such as water, fertilizer, and weed control, while maintaining low cost, thus significantly promoting plant growth and achieving remarkable results. The tools and materials used are readily available, eliminating the need for complex or high-cost tools, making it easy for farmers and other users to operate directly and possessing strong practicality for production. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the cultivation of small, old tung tree plants on a small site with a slope of less than 18° according to the present invention.

[0030] Figure 2 This is a schematic diagram of a small, old tung tree plant cultivated on a site with a slope greater than 18° according to the present invention.

[0031] Figure 3 This is a schematic diagram illustrating the actual field implementation of Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram illustrating the actual field implementation of Embodiment 2 of the present invention;

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1-Side stake, 101-Side stake one, 102-Side stake two, 103-Side stake three, 2-Heart stake, 3-Plant, 4-Round hole, 5-Uphill position, 6-Downhill position, 7-Black plastic sheet; Detailed Implementation

[0035] The present invention will be further described below through embodiments. These embodiments are only used to further illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figure 1 and Figure 3 In this embodiment, a cultivation method for promoting the growth of young tung trees, specifically for tung trees planted on hillsides with a slope of less than 18 degrees, includes the following steps:

[0038] 1. Dig a circular trench around the small old tree, 18cm from the tree's diameter, 30cm deep and at least 20cm wide. After completion, spread 0.2kg of potassium sulfate compound fertilizer + 0.8kg of tung oil residue at the bottom of the trench. Scrape and collect topsoil rich in organic matter from the surrounding area and fill it into the trench. While mixing the fertilizer (compound fertilizer and tung oil residue), fill the circular trench to a depth of 2cm from the edge. Then fill the remaining 2cm with the subsoil that was dug out earlier. This ensures the small old tree receives nutrition, and the subsoil covering the surface reduces the number of weeds and pests on the surface.

[0039] 2. Artificial water collection ponds made of black plastic sheeting:

[0040] Materials and tools: 0.15mm thick and smooth black plastic sheet; several wooden stakes (side stakes) with a diameter of 7-8cm, a length of 55cm and a sharpened end; several wooden stakes (core stakes) with a diameter of 5-6cm, a length of 40cm and a sharpened end; No. 12 iron wire; binding wire; hammer; scissors; steel tape measure; pliers with rubber handle.

[0041] (1) Cut the black plastic sheet into a square of 1.8m*1.8m; and cut out a round hole with a radius of 18cm in the center;

[0042] (2) Plant four fixed stakes around the plant, with the plant as the center. The four stakes are at the four vertices of a square, and the plant is in the center of the square. The side length of the square is 1.2m. Cover the plant with plastic sheeting, with the plant falling in the center of the holes in the plastic sheeting.

[0043] With the plant as the center, plant three anchor stakes 18cm away from the plant's roots inside the edge of the hole, with the three stakes positioned at the vertices of an equilateral triangle inside the hole.

[0044] (3) Use No. 12 iron wire to wrap and tie it to the side pile, with the iron wire as close to the top of the pile as possible (to increase the slope of the water collection surface) to form a square, and keep the iron wire in each square as straight and fixed as possible.

[0045] (4) Use wire to tie the edge of the center hole of the plastic sheet to the three core stakes to fix the hole position. Note that the edge of the hole should be 3cm away from the ground to form a seam, which will facilitate the collection and flow of water below.

[0046] (5) Pull the plastic perimeter cloth outward from the center as flat as possible, fix it to the side stakes and the surrounding iron wire, and tie it with tie wire. Each iron wire needs to be fixed in three positions (in conjunction with step (4) to lay the plastic cloth, the principle is to fix the center first and then the edge).

[0047] (6) When flattening the plastic sheet, there may be wrinkles around the hole. If there are places where water may be blocked, cut a short notch with scissors to remove the wrinkles and facilitate drainage.

[0048] It should be noted that since touching the plant's root system will affect the plant's survival, the cultivation method of the present invention should be applied to the tung oil plant in winter, from November of the previous year to January of the following year (dormant period), or in the rainy season (when water is plentiful).

[0049] Figure 3 While the surface finish is somewhat lacking, this is due to two factors: firstly, the limitations imposed by the operator's field conditions, and secondly, the perspective of the photograph. However, the overall effect is significant. Those skilled in the art can refer to the above description, along with the accompanying drawings, to understand the specific details. Figure 1 and Figure 3 The illustration clearly and explicitly demonstrates the technical solution of this invention.

[0050] Example 2

[0051] Please see Figure 2 and Figure 4 In this embodiment, a cultivation method for promoting the growth of young tung trees is provided, specifically for tung trees planted on hillsides with a slope greater than 18 degrees. Based on Embodiment 1 above, the method steps in this embodiment differ slightly from those in the previous embodiment, as detailed below:

[0052] 1. Level the area around the small old tree appropriately to create a horizontal circular terrace with a diameter of about 70cm. Dig a semi-circular trench or larger than half a ring at a distance of 18cm from the tree on the slope above the tree, with a depth of 30cm and a width of 20cm. Spread 0.2kg of potassium sulfate compound fertilizer + 0.8kg of tung oil residue at the bottom of the trench. Scrape and collect topsoil rich in organic matter from the surrounding area and fill it into the trench. While mixing the fertilizer (compound fertilizer and tung oil residue), fill the circular trench to a depth of 2cm from the edge of the trench. Then fill the remaining 2cm with the subsoil that was dug out earlier.

[0053] 2. Artificial water collection pond made of black plastic sheeting

[0054] The materials and tools are the same as before.

[0055] (1) Cut the black plastic sheet into a square of 1.8m*1.8m; cut out a round hole with a radius of 18cm at a distance of 30cm from one side (the edge of the hole is 30cm from the edge of the cloth) and with its vertical direction in the center.

[0056] (2) Plant side stakes around the plant. On the downhill side of the plant, 38cm away from the plant, plant two fixed side stakes symmetrically with a distance of 1.2m between the two stakes with the plant position as the center. Using the line connecting these two stakes as the side, plant two side stakes 80cm away from the line connecting the two stakes on the uphill side of the plant (along the curve of the ground surface). Plant two more side stakes to strengthen the support of the plastic sheeting on the uphill side and prevent it from being deformed by rain. Plant two more side stakes 70cm uphill. The six side stakes form a rectangle. Cover the plant with the plastic sheeting and place the plant in the center of the hole. With the plant as the center, plant three core stakes 18cm away from the plant root inside the edge of the hole. The positions of the three core stakes are the vertices of the equilateral triangle inside the hole.

[0057] (3) Use No. 12 iron wire to wrap and tie it to the side stake. The iron wire should be tied as close to the top of the stake as possible to form a rectangle. Each side of the iron wire should be taut and fixed.

[0058] (4) Use tie wire to tie the edge of the center hole of the plastic sheet to the three core stakes to fix the position. The edge of the hole is 3cm away from the ground to form a seam, which facilitates the flow of water below.

[0059] (5) Pull the plastic perimeter cloth outward from the middle as much as possible, fix it to the side stakes and the binding wire, and tie it with tie wire. Each square plastic cloth needs to be fixed in three positions on the wire. The plastic cloth is also tied and fixed on each side stake (combined with step (4) to lay the plastic cloth, first fix the center and then fix the edge).

[0060] (6) When flattening the plastic sheet, cut a short notch in the plastic sheet around the hole where there are wrinkles that may block water, to remove the wrinkles and facilitate drainage.

[0061] It should be noted that since touching the plant's root system will affect the plant's survival, the cultivation method of the present invention should be applied to the tung oil plant in winter, from November of the previous year to January of the following year (dormant period), or in the rainy season (when water is plentiful).

[0062] Figure 4 The illustration shows a lack of flatness, due to limitations imposed by the operator's field conditions and the perspective of the photograph, but the overall effect is significant. Those skilled in the art can interpret the above description in conjunction with the accompanying drawings. Figure 1 and Figure 3 The illustration clearly and explicitly demonstrates the technical solution of this invention.

[0063] Implementation results:

[0064] The inventors conducted exploratory experiments based on the above experimental steps, including modifications using the technical solution of this invention and a control group, with the control group consisting of no modifications.

[0065] (1) Data collection: diameter at ground level, measured with vernier calipers for different treatments one year after implementation; tree height growth in the current year, measured with steel tape measure before implementation, measured again after one year after implementation, and the difference between the initial value and the later value is the tree height growth in the current year; number of leaves at the top in the current year, counted for different treatments; number of lateral buds and branches in the current year, counted for different treatments.

[0066] (2) Data analysis: Calculate the mean; use one-way ANOVA to analyze the differences between different treatments.

[0067] The data shows that the modified plants exhibited significant growth advantages and achieved remarkable results.

[0068] The specific experimental results are as follows:

[0069]

[0070] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cultivation method for promoting the growth of an old oil tree, characterized by, It comprises the following steps: S1, excavate a ring ditch: according to the slope of the small pedestal for the oil tree small old tree planting, the ground around the small old tree is leveled and a ring ditch is excavated, and the soil produced by the ring ditch is reserved; S2, fertilization and filling of the ring ditch: after mixing the fertilizer and the surface soil rich in organic matter, it is evenly spread in the ring ditch to a certain depth; the heart soil is filled on the fertilizer and the surface soil until the ring ditch is filled; S3, manufacturing a water collection concave pond: cutting the black plastic cloth into a rectangular black plastic cloth, and cutting a circular hole in the middle of the rectangular black plastic cloth; the plant is sleeved in the center of the circular hole; A plurality of heart piles and a plurality of edge piles are planted around the oil tree small old tree, the heart piles are located in the edge piles; the straight iron wire is wound on the outer periphery of the top end of the plurality of edge piles; the edge of the circular hole is connected with the heart pile; the black plastic cloth is pulled flat from the center to the periphery, the edge is fixed on the edge pile and the iron wire, and is bound and fixed with the binding wire; the wrinkles generated in the edge of the circular hole during the flattening operation are removed; The slope of the small pedestal in S1 is less than 18°, the ring ditch is a full ring, and is located 18 cm outside the plant diameter; the depth of the ring ditch is 30 cm, and the width is greater than 20 cm; the fertilizer in S2 is mixed evenly by 0.2 kg of potassium sulfate type compound fertilizer and 0.8 kg of tung oil residue, the surface soil is scraped around the small pedestal and is rich in organic matter, and the spreading depth is 28 cm; The slope of the small pedestal in S1 is greater than 18°, before excavating the ring ditch, the ground around the small old tree is leveled as a horizontal circular terrace, and the diameter of the horizontal circular terrace is 70 cm; the ring ditch is a half ring or more than a half ring, and the edge of the ring ditch on the uphill position of the plant is 18 cm away from the plant; the depth of the ring ditch is 30 cm, and the width is 20 cm; the fertilizer in S2 is mixed evenly by 0.2 kg of potassium sulfate type compound fertilizer and 0.8 kg of tung oil residue, the surface soil is scraped around the small pedestal and is rich in organic matter, and the spreading depth is 28 cm.

2. The cultivation method for promoting the growth of an old oil tree according to claim 1, wherein The rectangular black plastic cloth in S3 is a square with a side length of 1.8 m, and the radius of the circular hole is 18 cm; the circular hole is located in the center of the rectangular black plastic cloth.

3. The cultivation method of promoting the growth of an old oil tree according to claim 1, characterized in that, The rectangular black plastic cloth in S3 is a square with a side length of 1.8 m, and the radius of the circular hole is 18 cm; the edge of the circular hole is 30 cm away from the edge of the rectangular black plastic cloth.

4. The cultivation method according to claim 1 or 2, wherein The planting method of the edge pile and the heart pile in S3 is respectively: four edge piles, and the four edge piles are located at the four vertices of the square, and the positive direction side length is 1.2 m; the heart pile is three, and is planted in the circular hole around the plant.

5. The cultivation method according to claim 1 or 3, wherein In S3, the edge pile is 6, and the planting method of the edge pile is: two edge piles one are symmetrically planted on both sides of the downhill position of the plant at a distance of 38 cm from the plant, the straight line of the two edge piles one is taken as a side, and two edge piles two are symmetrically planted on both sides of the uphill position of the plant at a distance of 80 cm from the two edge piles one, and two edge piles three are symmetrically planted on both sides of the uphill position of the plant at a distance of 70 cm from the two edge piles two, the two edge piles one, the two edge piles two and the two edge piles three form a rectangle; the heart pile is three, and is planted in the circular hole around the plant.

6. The cultivation method of promoting the growth of small old trees of oil camwood according to claim 1, characterized in that, The black plastic cloth has a thickness of 0.15 mm and a smooth surface; the edge stake is a wood stake with a diameter of 7-8 cm and a length of 55 cm, and one end is sharpened; the heart stake is a wood stake with a diameter of 5-6 cm and a length of 40 cm, and one end is sharpened; and in the S3, the square formed by the iron wire wound outside the edge stake has three fixed positions with the black plastic cloth on each side, and the iron wire is No. 12 iron wire; the vertical distance between the edge of the black plastic cloth of the round hole and the upper surface of the small pedestal is 3 cm.

7. The cultivation method of promoting the growth of small old trees of oil camwood according to claim 1, characterized in that, In the S3, the wrinkles are generated during the process of flattening the black plastic cloth; and the operation of breaking the wrinkles is to cut a notch at the wrinkle part of the edge of the black plastic cloth round hole with scissors, which is beneficial to the drainage.

8. The cultivation method of promoting the growth of small old trees of oil camwood according to claim 1, characterized in that, The time for applying the cultivation method for promoting the growth of the small old camellia oleifera trees is from November to January of the next year in winter or the period with sufficient water.

Images