A convenient and rapid method for growing ampelopsis grossedentata seedlings
By designing a specialized cutting propagation plastic device and combining soaking treatment with nutrient solution management, the problems of high propagation cost and low seedling efficiency of kudzu were solved, enabling rapid seedling formation from kudzu leaves, improving seedling rate and efficiency, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN AGRI UNIV
- Filing Date
- 2026-05-12
- Publication Date
- 2026-06-09
Smart Images
Figure CN122162622A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of agricultural planting technology, specifically to a convenient and rapid method for growing kudzu leaves into seedlings. Background Technology
[0002] Kudzu, scientifically known as *Pueraria montana* var. *lobata*, is a common legume vine. Its tuberous roots, called "kudzu root," are rich in starch and can be processed into kudzu powder, a nutritious food. In traditional Chinese medicine, kudzu root is used to relieve muscle tension and fever, promote body fluid production and quench thirst, promote rash eruption, and raise yang to stop diarrhea. It is commonly used to treat colds with fever, thirst, incomplete measles eruption, and diarrhea. The flowers of kudzu, called "kudzu flower," are a traditional remedy for hangovers, often used to relieve symptoms such as thirst, headache, and vomiting after drinking alcohol. The stem bark fiber of kudzu can be used for textiles, and the resulting fabric, called "kudzu cloth," is breathable and has a long history. Kudzu leaves are rich in protein and are excellent livestock feed. As a legume, kudzu has root nodules containing rhizobia that can fix nitrogen in the air, increase soil fertility, and create better conditions for the growth of other plants. Kudzu grows extremely fast and can quickly cover bare ground, providing rapid green cover for wastelands and mining areas. Dense kudzu thickets can also provide habitats and shelter for small animals and insects.
[0003] The main propagation methods for kudzu are: (1) Cutting propagation: During the growing season (spring and summer), a section of stem is cut from a healthy kudzu plant for propagation. Cuttings are propagated in a well-ventilated and well-drained seedbed, which is costly; (2) Layering propagation: Select a healthy long vine and press a section of its stem into the ground or another flowerpot filled with soil. Cover the node with soil. This operation is complicated; (3) Root sucker propagation: In late autumn or early spring, some tuberous roots of kudzu are dug up for propagation, which is relatively labor-intensive; (4) Seed propagation: Kudzu seeds have a hard seed coat and dormancy characteristics. They must be treated to germinate successfully. This method is rarely used. Seeds need to be treated to germinate, and the growth rate of seedlings is relatively slow. Their traits may also vary.
[0004] Traditional kudzu propagation methods and planting patterns not only result in high seedling costs but also fail to meet the requirements of mechanized and large-scale seedling production. Therefore, strengthening research on rapid seedling production technology from kudzu leaves is crucial for achieving professional, standardized, and simplified kudzu seedling cultivation. Simultaneously, with the increasingly prominent roles of kudzu in modern textiles, high-quality forage, environmental pollution control, and soil remediation, enhancing the comprehensive utilization of kudzu and increasing its utilization value is an effective path for the development of the kudzu industry. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention aims to provide a convenient and rapid method for growing kudzu leaves into seedlings.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A convenient and rapid method for propagating kudzu leaves includes the following steps: S1. Leaf collection and pretreatment: From April to October each year, cut kudzu vines with thick green leaves, free from pests and diseases, and semi-lignified. Each section should have a complete leaf with leaf, petiole, and stem node. Remove the small leaflet in the middle of the trifoliate compound leaves and cut the cut straight down. Use this as cutting material. Dilute 50.0% carbendazim powder 1000 times to obtain a soaking liquid. Soak the entire cutting material in the soaking liquid for 10.0-15.0 minutes, and then soak the roots in 100.0 ppm naphthaleneacetic acid for 2.0 hours. S2, Cuttings Fill the pre-prepared clean river sand into the first cutting plastic device, then wet the river sand in the first cutting plastic device with clean water. Then insert the petioles and stem nodes of the kudzu obtained in step S1 into the first cutting plastic device to a depth of 3.0-4.0 cm and at a vertical angle. Then fill the second cutting plastic device with clean water, place the first cutting plastic device vertically on the second cutting plastic device, and then place the first cutting plastic device together with the second cutting plastic device in a place where the temperature is maintained at 20.0-30.0℃, 70.0% shade, and humid and ventilated. The first and second plastic cutting devices must be free of bacteria and pests. The first plastic cutting device is made of opaque plastic, while the second plastic cutting device is made of transparent plastic. The upper and lower parts of the first plastic cutting device have different shapes: the upper part is a cylinder with a diameter of 64.0 mm and a height of 30.0 mm, and the lower part is a frustum with a top diameter of 64.0 mm, a bottom diameter of 30.0 mm, and a height of 50.0 mm. The bottom of the lower part has three holes with a diameter of 0.2 mm, and the top surface of the first plastic cutting device is open. The second plastic cutting device is a cylinder with a diameter of 64.0 mm and a height of 140.0 mm, and its top surface is open. S3. Post-cutting management: After the cuttings are planted and during the rooting period, check the water level in the second plastic device for cuttings every 3 days to see if it is above the bottom of the first plastic device for cuttings. After new white roots grow, replace the original water with a nutrient solution containing N, P, and K, and replace the nutrient solution completely every 4 days. S4. Pre-transplanting care: Twenty days after cutting, remove the whole kudzu vine that has grown new white roots from the cutting plastic device, plant it in a disposable non-woven bag with seedling substrate, place it in a cool place for 4-5 days, and then let it recover for 5 days. S5. Transplanting seedlings: Transplant the kudzu vines along with disposable non-woven bags from step S4 on a cloudy or rainy day, and then carry out normal field management.
[0007] Furthermore, in step S2, the first and second plastic cutting devices are manufactured, both with a wall thickness of 5.0 mm.
[0008] Further, in step S3, the nutrient solution contains N, P, and K concentrations of 60.0 mg / L, 15.0 mg / L, and 90.0 mg / L, respectively.
[0009] Furthermore, in step S4, the disposable non-woven bag containing soil has a diameter of 12.0 cm and a height of 14.0 cm.
[0010] The beneficial effects of this invention are as follows: By employing specially designed cutting plastic devices one and two, combined with the method of this invention, the growth status of seedlings can be monitored in a timely manner, and water or nutrients can be replenished promptly. This significantly shortens the seedling time (approximately 10 days faster than traditional cutting seedling cultivation) and effectively improves the survival rate of kudzu seedlings (far exceeding the traditional cutting survival rate, reaching up to 90%) and the efficiency of seedling cultivation, while reducing the cost of kudzu seedling cultivation. Furthermore, this invention utilizes asexual reproduction, producing kudzu plants of consistent quality with the mother plant. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the cutting plastic device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the second plastic cutting device in an embodiment of the present invention. Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.
[0013] This embodiment provides a convenient and rapid method for growing kudzu seedlings from kudzu leaves, using kudzu root as the experimental material.
[0014] In August 2025, the experiment was conducted at the Changsha Academy of Agricultural Sciences base in Hunan Province. One hundred units each of two types of plastic cutting devices were pre-made. Both devices needed to be guaranteed to be free of pathogens and pests. Figure 1As shown, the upper and lower parts of the first plastic cutting device have different shapes. The upper part is a cylinder with a diameter of 64.0 mm and a height of 30.0 mm, while the lower part is a frustum with a top diameter of 64.0 mm, a bottom diameter of 30.0 mm, and a height of 50.0 mm. The bottom of the lower part has three holes with a diameter of 0.2 mm, and the top surface of the first plastic cutting device is open. Figure 2 As shown, the second plastic cutting device is a cylinder with a diameter of 64.0 mm and a height of 140.0 mm, and its top surface is open. The wall thickness of both the first and second plastic cutting devices is 5.0 mm.
[0015] When the aforementioned cutting plastic device 1 is placed into the cutting plastic device 2, the junction of the upper and lower parts of the cutting plastic device 1 is precisely locked into the opening of the cutting plastic device 2, so that there is a certain distance between the bottom of the cutting plastic device 1 and the bottom of the cutting plastic device 2.
[0016] Select kudzu vines with thick green leaves, free from pests and diseases, and semi-lignified. Each section should have a complete leaf, petiole, and stem node (leaving a 2.0cm stem segment above and below each node). Remove the small leaflet from the middle of the trifoliate leaves. Make a straight cut at the base of each cutting to reduce the wound area. Take a total of 200 cuttings. Dilute 50.0% carbendazim powder 1000 times to obtain a soaking solution. Soak the entire cutting material in the soaking solution for 15.0 minutes, and then soak the roots in 100.0 ppm naphthaleneacetic acid (NAA) for 2.0 hours to obtain pretreated cutting material.
[0017] Fill each of the pre-prepared clean river sand into one of the cutting plastic devices. Then, thoroughly wet the river sand in the cutting plastic device one with clean water. Next, insert 100 leaf petioles and stem nodes of the treated kudzu vine into 100 cutting plastic devices one, with an insertion depth of 3.0-4.0 cm and a vertical insertion angle. Then, fill 100 cutting plastic devices two with clean water. Place the 100 cutting plastic devices one on top of the 100 cutting plastic devices two. After the entire device is planted, place it in a place where the temperature is maintained at 20.0-30.0℃, with 70.0% shade and good ventilation.
[0018] After cutting, during the rooting period, check the water level in the second cutting plastic device every 3 days to see if it is above the bottom of the first cutting plastic device. New white roots will grow in 4 days. At this time, replace the original water with a nutrient solution containing 60.0 mg / L N, 15.0 mg / L P, and 90.0 mg / L K, and replace the nutrient solution completely every 4 days. Twenty days after cutting, remove the whole kudzu vine, which has developed new white roots, from the cutting plastic device. Plant it in a disposable non-woven fabric seedling bag (12.0cm in diameter and 14.0cm in height after filling with soil) with seedling substrate. Place it in a cool, shady place for 4 days, then in a cool, shady place for 5 days to allow it to recover. Keep it moist and well-ventilated. It can be transplanted after 30 days. Select healthy seedlings and transplant them on a cloudy or rainy day, then carry out normal field management.
[0019] As a control group, another 100 kudzu cuttings, obtained using the same leaf collection and pretreatment methods, were inserted obliquely into a sand bed using traditional methods (inserting to about 2 / 3 of their height), maintaining a spacing of 20.0×25.0 cm or 5.0×10.0 cm. After insertion, the cuttings were thoroughly watered, covered with a thin film to retain warmth and moisture, and the temperature was maintained at 20.0-30.0℃. The cuttings were placed in a location with 70.0% shade. The film was checked every 7 days to ensure it retained warmth and moisture without damage. 30 days after insertion, healthy kudzu cuttings were selected and planted in a seedling substrate in disposable non-woven bags (12.0 cm in diameter and 14.0 cm in height after being filled with soil). They were placed in a cool, shady place for 4 days, followed by a 5-day acclimatization period, maintaining moisture and ventilation. They were ready for transplanting after 40 days.
[0020] Using the method of this embodiment, the time for cutting propagation of kudzu seedlings can be shortened by about 10 days compared with the traditional film-covered seedling cultivation time, and the survival rate of seedlings can reach 90.0%, which is far higher than the 68.0% survival rate of traditional seedbed cutting propagation (Table 1 experimental data). Moreover, the method of this embodiment is convenient and quick to operate, with fast seedling growth and low cost.
[0021] Table 1 Survival Rate Statistics Group Number of cuttings (each) Number of surviving individuals (units) Survival rate (%) Using the method of this embodiment (experimental group) 100 90.0 90.0 Traditional seedbed cuttings (control) 100 68.0 68.0 For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the protection scope of the claims of this invention.
Claims
1. A convenient and rapid method for propagating kudzu leaves into seedlings, characterized in that, Includes the following steps: S1. Leaf collection and pretreatment: From April to October each year, cut kudzu vines with thick green leaves, free from pests and diseases, and semi-lignified. Each section should have a complete leaf with leaf, petiole, and stem node. Remove the small leaflet in the middle of the trifoliate compound leaves and cut the cut straight down. Use this as cutting material. Dilute 50.0% carbendazim powder 1000 times to obtain a soaking liquid. Soak the entire cutting material in the soaking liquid for 10.0-15.0 minutes, and then soak the roots in 100.0 ppm naphthaleneacetic acid for 2.0 hours. S2, Cuttings Fill the pre-prepared clean river sand into the first cutting plastic device, then wet the river sand in the first cutting plastic device with clean water. Then insert the petioles and stem nodes of the kudzu obtained in step S1 into the first cutting plastic device to a depth of 3.0-4.0 cm and at a vertical angle. Then fill the second cutting plastic device with clean water, place the first cutting plastic device vertically on the second cutting plastic device, and then place the first cutting plastic device together with the second cutting plastic device in a place where the temperature is maintained at 20.0-30.0℃, 70.0% shade, and humid and ventilated. The first and second plastic cutting devices must be free of bacteria and pests. The first plastic cutting device is made of opaque plastic, while the second plastic cutting device is made of transparent plastic. The upper and lower parts of the first plastic cutting device have different shapes: the upper part is a cylinder with a diameter of 64.0 mm and a height of 30.0 mm, and the lower part is a frustum with a top diameter of 64.0 mm, a bottom diameter of 30.0 mm, and a height of 50.0 mm. The bottom of the lower part has three holes with a diameter of 0.2 mm, and the top surface of the first plastic cutting device is open. The second plastic cutting device is a cylinder with a diameter of 64.0 mm and a height of 140.0 mm, and its top surface is open. S3. Post-cutting management: After the cuttings are planted and during the rooting period, check the water level in the second plastic device for cuttings every 3 days to see if it is above the bottom of the first plastic device for cuttings. After new white roots grow, replace the original water with a nutrient solution containing N, P, and K, and replace the nutrient solution completely every 4 days. S4. Pre-transplanting care: Twenty days after cutting, remove the whole kudzu vine that has grown new white roots from the cutting plastic device, plant it in a disposable non-woven bag with seedling substrate, place it in a cool place for 4-5 days, and then let it recover for 5 days. S5. Transplanting seedlings: Transplant the kudzu vines along with disposable non-woven bags from step S4 on a cloudy or rainy day, and then carry out normal field management.
2. The method according to claim 1, characterized in that, In step S2, the first and second plastic cutting devices are manufactured, both with a wall thickness of 5.0 mm.
3. The method according to claim 1, characterized in that, In step S3, the nutrient solution contains N, P, and K concentrations of 60.0 mg / L, 15.0 mg / L, and 90.0 mg / L, respectively.
4. The method according to claim 1, characterized in that, In step S4, the disposable non-woven bag filled with soil has a diameter of 12.0 cm and a height of 14.0 cm.