Method for improving sweet potato tuberization rate by human intervention of sweet potato adventitious root transformation direction

Abstract

The invention relates to the technical field of improvement of sweet potato tuberization rate, in particular to a method for improving sweet potato tuberization rate by human intervention of sweet potato adventitious root transformation direction, which comprises the following steps: S1, preparation work, S2, seed selection work, S3, root primordium germination promotion treatment, S4, sweet potato seedling transplanting, and S5, artificial intervention of adventitious root transformation treatment in differentiation period. The amino acid-containing water-soluble fertilizer promotes formation of sweet potato adventitious roots because amino acid as a direct nutrient group can stimulate germination of root primordia, nutrient elements such as calcium and magnesium contained in the fertilizer provide nutrition for formation of the adventitious roots, and the calcium element can improve cell wall toughness and increase the growth speed of the adventitious roots. The macro-element water-soluble fertilizer can promote the differentiation of potato tubers because the macro-element water-soluble fertilizer contains a large amount of chelated phosphorus and potassium and trace elements and can induce adventitious roots to be converted towards the tuberous roots and improve the tuberization rate, and meanwhile selection of the treatment period and the corresponding proportion are crucial.

Description

Technical Field

[0001] This invention patent relates to the technical field of sweet potato tuber formation rate, and specifically provides a method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the sweet potato tuber formation rate. Background Art

[0002] From the perspective of sweet potato ecology, it is known that the yield of sweet potato is formed by tuberous roots, that is, the commonly said sweet potato tubers. The sweet potato tuberous roots are transformed from sweet potato adventitious roots. There are three transformation directions for sweet potato adventitious roots, namely fibrous roots, woody roots (burdock roots), and tuberous roots. Only tuberous roots can form yield, while fibrous roots and woody roots will not form sweet potato yield. Therefore, if the transformation efficiency of sweet potato adventitious roots into tuberous roots can be improved, the sweet potato yield can be increased. The inventor found that there are six common factors that determine whether sweet potato adventitious roots can be transformed into more tuberous roots, namely: 1. The number of sweet potato adventitious roots; 2. Soil temperature; 3. Soil humidity; 4. Soil oxygen content; 5. The potassium element content level in the sweet potato seedlings and the nutritional satisfaction level for tuber transformation; 6. Variety characteristics. Among them, there are two factors that can be conveniently intervened by humans, namely the number of sweet potato adventitious roots, and the potassium element content level in the sweet potato seedlings and the nutritional satisfaction level for tuber transformation.

[0003] In the current existing sweet potato planting process, due to the lack of rooting treatment for sweet potato seedlings, or the rooting treatment method is not standard or scientific, the management method is not scientific, and the use of related products is not professional, the number of sweet potato adventitious roots is insufficient. The timing of sweet potato tuberization is not accurately grasped, the treatment measures are improper or not treated, which cannot effectively promote the transformation of adventitious roots into tuberous roots. Sweet potato adventitious roots are easily transformed into fibrous roots or woody roots. Therefore, even in a suitable climate, due to the unscientific planting technology, the transformation direction of sweet potato adventitious roots is unreasonable, and the sweet potato tuber formation rate is low, affecting the final yield of sweet potato. Therefore, there is an urgent need for a method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the sweet potato tuber formation rate to solve the above problems.

[0004] Content of the Invention Patent

[0005] The purpose of this invention patent aims to solve at least one of the above technical defects.

[0006] Therefore, an object of this invention patent is to provide a method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the sweet potato tuber formation rate, so as to solve the problems mentioned in the background art and overcome the deficiencies existing in the prior art.

[0007] To achieve the above object, an embodiment of one aspect of this invention patent provides a method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the sweet potato tuber formation rate, including the following steps:

[0008] S1. Preparation work: The staff first prepares an experimental pool and adds a water-fertilizer mixed solution to the experimental pool and stirs it;

[0009] S2. Seed selection: The staff selects high-yield and early-maturing high-quality sweet potato seedlings for standby;

[0010] S3. Treatment to promote the germination of root primordia: The staff takes about 10 - 15 cm of the root part of the sweet potato seedlings or the part of the sweet potato seedlings buried in the soil;

[0011] S4. For the sweet potato seedlings whose roots have been dipped in water, the staff transplants them into the experimental field;

[0012] S5. According to different planting areas, generally 15 - 25 days after the sweet potatoes are transplanted into the experimental field, the staff evenly sprays the chelated macronutrient water-soluble fertilizer on the leaf surface.

[0013] This invention patent is further set as: In the step S1, the proportion of the water-fertilizer mixed solution in the experimental water tank is: 5 - 6 kg of water is mixed with 100 ml of amino acid-containing water-soluble fertilizer, and the proportion of the water-fertilizer mixed solution for spray treatment is: 15 - 20 kg of water is mixed with 30 ml of amino acid-containing water-soluble fertilizer.

[0014] By adopting the above technical solution, 5 - 6 kg of water is mixed with 100 ml of amino acid-containing water-soluble fertilizer, which plays a role in diluting the amino acid-containing water-soluble fertilizer.

[0015] This invention patent is further set as: The liquid level of the water-fertilizer mixed solution in the experimental water tank in the step S1 should be ensured to meet the requirement of submerging the root part of the sweet potato seedlings by 10 - 15 cm.

[0016] By adopting the above technical solution, the liquid level of the water-fertilizer mixed solution in the experimental water tank in the step S1 is 10 - 15 cm, which plays a role in enabling all the key positions for the germination of sweet potato root primordia to come into contact with the mixed solution.

[0017] This invention patent is further set as: In the step S3, the dipping time for the treatment to promote the germination of root primordia is 1 - 2 minutes, and the spray treatment is carried out before the transplanting of the sweet potato seedlings or 5 - 10 days after the transplanting of the sweet potato seedlings.

[0018] By adopting the above technical solution, the spray treatment is carried out before the transplanting of the sweet potato seedlings or 5 - 10 days after the transplanting of the sweet potato seedlings, which plays a role in reducing the fertilizer usage amount and saving the usage cost. At the same time, it can enable the key parts for the germination of root primordia to directly contact the mixed solution and improve the root-promoting efficiency.

[0019] This invention patent is further set as: In the step S4, when the staff transplants the sweet potato seedlings dipped in the water-fertilizer mixed solution from the experimental water tank to the inside of the experimental field, the flat planting method is adopted, and the planting spacing between each sweet potato seedling is between 25 - 35 cm, and the planting row spacing is between 80 - 100 cm.

[0020] By adopting the above technical solution, the planting spacing of each sweet potato seedling is between 25 - 35 cm, and the planting row spacing is between 80 - 100 cm, which can meet the space requirements for the root development of sweet potatoes.

[0021] This invention patent is further configured as follows: In the chelated macronutrient water-soluble fertilizer in step S5, the ratio is that 15 - 20 kg of water is mixed with 40 - 60 ml of elemental water-soluble fertilizer.

[0022] By adopting the above technical solution, when 15 - 20 kg of water is mixed with 40 - 60 ml of elemental water-soluble fertilizer, it can ensure the key nutrients required for the differentiation of adventitious roots into potato tubers, and at the same time play a role in diluting the macronutrient water-soluble fertilizer.

[0023] This invention patent is further configured as follows: The foliar treatment period of the chelated macronutrient water-soluble fertilizer is 15 - 25 days after transplanting.

[0024] By adopting the above technical solution, the foliar treatment period of the chelated macronutrient water-soluble fertilizer is 15 - 25 days after transplanting, which can accurately grasp the key period of transformation and improve the transformation efficiency of potato tubers.

[0025] This invention patent is further configured as follows: The nutrient components of the amino acid-containing water-soluble fertilizer are: amino acids, medium and trace elements (mainly including elements such as calcium, magnesium, iron, zinc, manganese, copper, boron, molybdenum, etc.).

[0026] By adopting the above technical solution, amino acids play a role in providing the required nutrients for sweet potatoes.

[0027] This invention patent is further configured as follows: The raw materials of the chelated macronutrient water-soluble fertilizer are composed of a combination of a large amount of macronutrients phosphorus and potassium, a small amount of trace elements boron and zinc, crop straw leachate, rapeseed meal, urea and other components.

[0028] By adopting the above technical solution, the chelated macronutrient water-soluble fertilizer plays a role in changing the soil nutrient components.

[0029] In summary, the beneficial technical effects of this invention patent are as follows:

[0030] 1. The method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber formation rate of sweet potato. During the transplanting period of sweet potato, dipping the roots with amino acid-containing water-soluble fertilizer or spraying the leaves of sweet potato with amino acid-containing water-soluble fertilizer 5 - 10 days after transplanting can increase the occurrence rate of sweet potato adventitious roots and the number of adventitious roots, providing a sufficient number of adventitious roots for improving the transformation efficiency of sweet potato adventitious roots into tuberous roots. At the same time, according to the ecological concept of sweet potato and the actual observation of the inventor, 15 - 25 days after transplanting sweet potato is the critical period for the transformation of sweet potato adventitious roots into tuberous roots. Spraying macronutrient water-soluble fertilizer on the leaves or drip-irrigating high-potassium humic acid-containing water-soluble fertilizer on the roots can greatly increase the potassium content level in sweet potato seedlings, stimulate the hormones and nutrient levels required for the transformation of sweet potato adventitious roots into tuberous roots, supplement the key nutrient elements required for tuber transformation, and improve the transformation efficiency of sweet potato adventitious roots into tuberous roots, thereby increasing the tuber formation rate of sweet potato;

[0031] 2. The method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber formation rate of sweet potato. Using amino acid-containing water-soluble fertilizer to promote the formation of sweet potato adventitious roots is because amino acids, as direct nutrient groups, can stimulate the germination of root primordia. At the same time, nutrient elements such as calcium and magnesium contained in the fertilizer provide nutrients for the formation of adventitious roots. Calcium can also enhance the toughness of cell walls and increase the growth rate of adventitious roots. Macronutrient water-soluble fertilizers contain chelated phosphorus and potassium elements, which can be quickly absorbed by sweet potato leaves, increasing the potassium content level in seedlings. Under the influence of a large amount of phosphorus and potassium elements, the transformation efficiency of adventitious roots into tuberous roots will be greatly improved. If drip-irrigation treatment is used, the high-potassium humic acid-containing water-soluble fertilizer used can not only increase the potassium content and nutrient content level in seedlings, but also the humic acid organic matter it contains can improve the soil structure, further increasing the transformation efficiency of sweet potato adventitious roots into tuberous roots and increasing the tuber formation rate.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Example 1

[0035] A method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber formation rate of sweet potato disclosed in the present invention includes the following steps:

[0036] S1. Preparation: The staff first prepare an experimental pool and add a water-fertilizer mixed solution to the experimental pool for stirring;

[0037] S2. Seed selection: The staff screen sweet potato seedlings of high-yield and early-maturing high-quality varieties for standby;

[0038] S3. Treatment to promote the germination of root primordia: The staff take about 10 - 15 cm of the root part of the sweet potato seedling or the part of the sweet potato seedling buried in the soil;

[0039] S4. For the sweet potato seedlings whose roots have been dipped in water, the staff transplant them into the experimental field;

[0040] S5. According to different planting areas, generally 15 - 25 days after the sweet potatoes are transplanted into the experimental field, the staff evenly spray a chelated macronutrient water-soluble fertilizer on the leaf surface.

[0041] In this embodiment, dipping about 10 cm of the root part of the sweet potato seedling or the part of the sweet potato seedling buried in the soil into the water-fertilizer mixed solution inside the pool can increase the occurrence rate of adventitious roots of sweet potatoes and increase the number of adventitious roots of sweet potatoes; 15 - 25 days after the sweet potatoes are transplanted into the experimental field, the staff evenly spray a macronutrient water-soluble fertilizer on the leaf surface, which can provide the nutrient hormone level required to stimulate the transformation of adventitious roots of sweet potatoes into tuberous roots, thereby improving the transformation efficiency of adventitious roots of sweet potatoes into tuberous roots.

[0042] In step S1, the proportion of the water-fertilizer mixed solution in the experimental pool is: 5 - 6 kg of water mixed with 100 ml of amino acid-containing water-soluble fertilizer, and the proportion of the water-fertilizer mixed solution for spray treatment is: 15 - 20 kg of water mixed with 30 ml of amino acid-containing water-soluble fertilizer. In this embodiment, water plays a role in diluting the amino acid-containing water-soluble fertilizer, and the amino acid-containing water-soluble fertilizer plays a role in promoting the germination of root primordia and increasing the number of adventitious roots.

[0043] The liquid level of the water-fertilizer mixed solution in the experimental pool in step S1 should be ensured to meet the requirement of soaking the root part of the sweet potato seedling with a length of 10 - 15 cm. In this embodiment, the soaking length of the sweet potato seedling is kept at 10 - 15 cm, which plays a role in enabling all the key positions for the germination of sweet potato root primordia to come into contact with the mixed solution.

[0044] In step S3, the dipping time for the treatment to promote the germination of root primordia is 1 - 2 minutes, and the spray treatment is carried out before the transplantation of the sweet potato seedlings or 5 - 10 days after the transplantation of the sweet potato seedlings. In this embodiment, compared with the drip irrigation treatment after transplantation, it can greatly reduce the fertilizer usage amount, save the usage cost, and at the same time enable the germination part of the root primordia to directly contact the mixed solution, increasing the root-promoting effect.

[0045] When the staff transplant the sweet potato seedlings dipped in the water-fertilizer mixture from the experimental pool to the inside of the experimental field in step S4, the flat planting method is adopted. The planting spacing of each sweet potato seedling is between 25-35 cm, and the planting row spacing is between 80-100 cm. In this embodiment, the corresponding plant spacing and row spacing can meet the spatial requirements for the root development of sweet potatoes.

[0046] In step S5, the proportion of the chelated macronutrient water-soluble fertilizer is that every 40-60 ml of the elemental water-soluble fertilizer is mixed with 15-20 kg of water. In this embodiment, while ensuring the nutrients required for the differentiation of sweet potato tubers, it plays a role in diluting the elemental water-soluble fertilizer. The macronutrient water-soluble fertilizer plays a role in improving the conversion efficiency of the adventitious roots of sweet potatoes into tuberous roots.

[0047] The foliar treatment period of the chelated macronutrient water-soluble fertilizer is 15-25 days after transplantation. In this embodiment, it plays a role in accurately grasping the critical conversion period and improving the conversion efficiency of sweet potato tubers.

[0048] The nutrient components of the amino acid-containing water-soluble fertilizer are: amino acids, medium and trace elements (mainly including elements such as calcium, magnesium, iron, zinc, manganese, copper, boron, molybdenum, etc.). In this embodiment, the cooperation of amino acids and various nutrient elements plays a role in promoting the germination of root primordia and increasing the occurrence speed and number of adventitious roots of sweet potatoes.

[0049] The raw materials of the chelated macronutrient water-soluble fertilizer are composed of a large amount of macronutrients phosphorus and potassium, trace amounts of trace elements boron and zinc, crop straw leachate, rapeseed meal, urea and other components. In this embodiment, the phosphorus and potassium nutrients and trace elements play a role in providing the nutritional requirements during the tuber conversion period and meeting the key nutrient elements required for the conversion of adventitious roots into tuberous roots.

[0050] Example Two

[0051] S1. Preparation work: The staff first prepare an experimental pool and add a water-fertilizer mixed solution to the experimental pool for stirring;

[0052] S2. Seed selection work: The staff screen high-yield and early-maturing high-quality sweet potato seedlings for standby;

[0053] S3. Treatment for promoting the germination of root primordia: If there is a shortage of transplanting workers or the transplanting time is tight and the transplanting is missed, the staff can use the water-fertilizer mixture to spray on the surface of the leaves 5-10 days after the sweet potato transplantation;

[0054] S4. For the sweet potato seedlings whose roots have been dipped in water, the staff transplant them into the experimental field;

[0055] S5. According to different planting areas, generally 15-25 days after the sweet potatoes are transplanted into the experimental field, the staff evenly spray the chelated macronutrient water-soluble fertilizer on the surface of the leaves.

[0056] In this embodiment, spray treatment is adopted because the suitable period for sweet potato transplantation is relatively concentrated and there is not enough time for root dipping treatment. Therefore, foliar spray supplementary treatment is carried out 5 - 10 days after transplantation. Mix the amino acid-containing water-soluble fertilizer with water and spray it on the surface of the leaves, which can achieve the effect of promoting the formation of adventitious roots of sweet potatoes, increase the number of adventitious roots, provide a basic root amount for the transformation of adventitious roots into tubers, evenly spray the macronutrient water-soluble fertilizer on the leaf surface, provide nutritional supply for improving tuber transformation, and thus increase the tuber setting rate of sweet potatoes.

[0057] Example Three

[0058] S1. Preparation work: The staff first prepares an experimental pool and adds a water-fertilizer mixed solution to the experimental pool for stirring;

[0059] S2. Seed selection work: The staff screens sweet potato seedlings of high-yield and early-maturing high-quality varieties for standby;

[0060] S3. Treatment for promoting the germination of root primordia: The staff cuts about 10 - 15 cm of the root part of the sweet potato seedling or the part of the sweet potato seedling buried in the soil;

[0061] S4. For the sweet potato seedlings whose roots have been dipped in water, the staff transplants them into the experimental field;

[0062] S5. According to different planting areas, generally 15 - 25 days after transplanting sweet potatoes into the experimental field, the staff uses a high-potassium humic acid-containing water-soluble fertilizer and drip-irrigates it into the soil of the experimental field.

[0063] In this embodiment, the high-potassium humic acid-containing water-soluble fertilizer plays a role in improving the tuber differentiation efficiency.

[0064] The implementation principle of this embodiment is:

[0065] During the cultivation of sweet potato seedlings, it is necessary to first prepare a pool with an area of 5 square meters, inject 5 - 6 kilograms of water into the pool, mix 100 ml of amino acid-containing water-soluble fertilizer into the water, and quickly stir the water-fertilizer mixture in the pool to fully blend the water and the amino acid-containing water-soluble fertilizer;

[0066] Then, the staff will screen sweet potato seedlings of high-yield and early-maturing high-quality varieties, and immerse the part about 10 cm from the root or the part of the sweet potato seedling inserted into the soil into the water-fertilizer mixture in the experimental pool. After being immersed, the sweet potato seedlings will be transplanted into the interior of the experimental field by the staff. "If there is a shortage of transplanting workers or the transplanting time is tight and the transplanting is missed, the sweet potato seedlings need to be transplanted into the experimental field and grow normally for 5 - 10 days first. The staff can mix 30 - 50 ml of amino acid-containing water-soluble fertilizer into 15 - 20 kg of water and then evenly spray it on the surface of the sweet potato seedling leaves, which can also achieve the effect of promoting the formation of adventitious roots of sweet potatoes." During the process of transplanting from the experimental pool to the experimental field, the planting spacing between each sweet potato seedling is between 30 - 40 cm, and the planting row spacing is between 90 - 100 cm, which can leave enough space for the growth of sweet potatoes;

[0067] The time of the peak adventitious root hair growth period of sweet potatoes varies slightly according to different planting seasons. For spring sweet potatoes, it is recommended to be about 10 days after transplanting; for summer sweet potatoes, it is about 5 days after transplanting; and for southern autumn sweet potato areas, it is more suitable to be about 7 days after transplanting. Therefore, the period of foliar spraying to promote root hair growth should be slightly adjusted according to different regions;

[0068] When the sweet potato seedlings are transplanted to the experimental field for 15 - 25 days, mix 40 - 60 ml of elemental water-soluble fertilizer with 15 - 20 kg of water and spray it on the surface of the sweet potato seedling leaves, which can improve the adventitious root transformation period of sweet potatoes. During the process of planting sweet potatoes, there may be a situation of mixed cropping of crops. In order to avoid the impact of elemental water-soluble fertilizer on other crops, at this time, 5 - 10 catties of high-potassium humic acid-containing water-soluble fertilizer per mu need to be dripped into the soil of the experimental field along with the water flow, so that sweet potatoes can fully absorb the high-potassium humic acid-containing water-soluble fertilizer, thereby changing the adventitious root transformation period of sweet potatoes;

[0069] The period of adventitious root transformation intervention treatment varies slightly according to different planting regions. In the northern sweet potato areas, for spring sweet potatoes, it is recommended to be about 20 - 25 days after transplanting; for summer sweet potatoes, it is about 10 - 15 days after transplanting; and for southern autumn sweet potato areas, it is more suitable to be about 10 days after transplanting.

[0070] Compared with the prior art, the present invention has the following beneficial effects over the prior art:

[0071] The amino acid-containing water-soluble fertilizer promotes the formation of adventitious roots in sweet potatoes because amino acids, as direct nutrient groups, can stimulate the germination of root primordia. At the same time, nutrient elements such as calcium and magnesium contained in the fertilizer provide nutrients for the formation of adventitious roots. At the same time, calcium elements can enhance the toughness of cell walls and increase the growth rate of adventitious roots. The elemental water-soluble fertilizer includes a large amount of chelated potassium, which can be quickly absorbed by the sweet potato leaf surface and increase the potassium element content level in the sweet potato seedlings. The high-potassium humic acid-containing water-soluble fertilizer can not only increase the potassium element content level in the sweet potato seedlings, but also the contained humic acid organic matter can improve the soil structure. After dipping the roots or spraying treatment for 7-10 days after transplanting, both the occurrence speed and the occurrence quantity of adventitious roots in sweet potatoes have increased significantly. After spraying or drip irrigation treatment 15-25 days after transplanting and observing 40 days after transplanting, the number of sweet potato tubers has increased significantly, and the yield comparison after sweet potato harvest has increased significantly.

Claims

1. A method for artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes, characterized in that: Here are the steps: S1. Preparation: The staff first prepares the experimental pool and adds the water-fertilizer mixed solution into the experimental pool for stirring; S2. Seed selection: The staff selects high-yield, early-maturing, high-quality sweet potato seedlings for future use; S3. Treatment to promote root primordium germination: The staff will remove the root of the sweet potato seedlings about 10-15cm or the part where the sweet potato seedlings are buried in the soil; S4. After the roots of the sweet potato seedlings were dipped in water, the staff transplanted them into the experimental field; S5. Depending on the planting area, generally 15-25 days after the sweet potatoes are transplanted to the experimental field, the staff will use chelated macronutrient water-soluble fertilizers to evenly spray them on the leaf surface.

2. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The ratio of the water-fertilizer mixed solution in the experimental water pool in step S1 is: 5-6 kg water mixed with 100 ml amino acid-containing water-soluble fertilizer, and the ratio of the water-fertilizer mixed solution for spray treatment is: 15-20 kg water mixed with 30 ml amino acid-containing water-soluble fertilizer.

3. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The liquid level of the water-fertilizer mixture in the experimental water pool in step S1 should be guaranteed to meet the 10-15 cm length requirement of the roots of the potato seedlings.

4. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The root dipping time for promoting root primordium germination treatment in step S3 is 1-2 minutes, and the spraying treatment is performed before transplanting the potato seedlings or 5-10 days after transplanting the potato seedlings.

5. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: In step S4, the staff transplants the potato seedlings dipped in the water-fertilizer mixture from the experimental water pool to the interior of the experimental field using a flat planting method, with each potato seedling planted at a spacing of 25-35 cm and a row spacing of 80-100 cm.

6. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The ratio of the chelated macro-element water-soluble fertilizer in step S5 is 15-20 kg of water mixed with 40-60 ml of the element water-soluble fertilizer.

7. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The foliage treatment period of the chelated macronutrient water-soluble fertilizer is 15-25 days after transplanting.

8. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 2, characterized in that: The nutrients of the amino acid-containing water-soluble fertilizer include amino acids, medium and trace elements (mainly including calcium, magnesium, iron, zinc, manganese, copper, boron, molybdenum and other elements).

9. The method of artificially intervening in the transformation direction of sweet potato adventitious roots to improve the tuber setting rate of sweet potatoes according to claim 1, characterized in that: The raw material of the chelated macro-element water-soluble fertilizer is composed of a large amount of macro-element phosphorus and potassium, a trace amount of trace element boron and zinc, crop straw leaching liquid, rapeseed meal, urea and other components.