31results about How to "Grafting affinity is good" patented technology

The present invention discloses the seedless litchi graft stock selecting technology. The technological process of selecting seedless litchi graft stock includes the following steps: 1. separating the simple sequence repeating (SSR) sequence through a combined selective amplifying microsatellite (SAM) and database searching method; 2. designing SSR primer with the flanking sequence of SSR sequence; 3. screening out the useful primer to obtain litchi specificity SSR marker; 4. applying the litchi specificity SSR marker in the genetic diversity analysis of partial litchi germplasm; 5. data analysis; and 6. selecting the litchi germplasm with near affinity as stock for seedless litchi grafting propagation based on the analysis result. The said process results in high survival rate and can obtain high quality seedless litchi variety.

The invention discloses a sowing method of pumpkin stock, which comprises the following steps: adopting Chinese round pumpkin in the Shandong province to cross for three generations, separating to purify, identifying to sieve self-crossing YN-3 to grow stably under low-temperature and weak light condition as mother, selecting self-crossing CN-3 of Indian long pumpkin to resist low-temperature, drought and disease as father, crossing to obtain the first-filial generation.

The invention discloses a monocotyledon approach grafting method, which comprises the following steps of: (1) proper grafting period selection, wherein bottle gourd rootstock seeds are sown and cultivated 6 to 8 days in advance and then watermelon scion seeds are sown, and the proper grafting period is the period when the rootstocks and watermelon grafting plants are basically in the same size, namely when watermelon cotyledons expand and the first euphylla of the scion plants grow; (2) rootstock treatment, wherein rootstock growing points are removed by bamboo plates, the part close to the cotyledon side is cut downward at an angle of 75 degrees by a blade, one cotyledon of the rootstock is cut, the cut depth is 20 percent based on the diameter of the hypocotyl and the length is 0.7 centimeter; (3) scion preparation, wherein the part, 0.5 centimeter away from the cotyledon, of the upper end of the watermelon grafting hypocotyl is cut at an angle of 25 degrees and the cut length is 0.7 centimeter; (4) approach grafting, wherein the cuts of the rootstock and the scion are adhered and aligned, the cuts are clamped by a grafting clamp and the grafted product is placed in a seedling re-growing chamber to allow the cuts heal and re-grow after the grafting is completed. The monocotyledon approach grafting method has the advantages of high survival rate, high working efficiency and the like and is also suitable for grafting varieties, such as bitter gourds, with a low grafting survival rate.

The invention relates to a method for growing seedlings of pomelos. The method includes sequential steps of sowing seeds and cultivating rootstock; digging field planting pits; planting the rootstock seedlings in fields; carrying out grafting management. The method has the advantages that the method is high in pollination efficiency and seed collection quantity, early in seed collection time and good in stock-scion grafting compatibility, and the rootstock is high in disease resistance; shortcomings of low winter and spring temperatures, short illumination time, great humidity variation and insufficient soil nutrient supply can be overcome, and growth of the rootstock seedlings can be greatly accelerated; seedling recovering stages due to damage to root systems can be omitted, the growth density of plants is obviously lowered after the plants are planted in the fields, accordingly, tree growing spaces can be greatly increased, utilization of illumination, water and nutrients can be greatly improved, a large quantity of nutrition can be accumulated in trees, tips of branches can grow fast, trunk diameters and thicknesses can be quickly increased, grafting can be carried out in advance, tree forms can be formed early after the trees are grafted, flowering and fruit bearing can be shifted to an earlier time, and economic benefits can be realized quickly; organic fertilizers contain comprehensive and balanced nutritional components, accordingly, growth and development requirements of the pomelos can be met, and growth of the pomelos can be accelerated.

The invention discloses a method for culturing an ornamental fruit rugosa tree and belongs to the field of garden plant culturing. The method for culturing the ornamental fruit rugosa tree comprises the steps that a rose is cultured into a forming stock, an ornamental fruit rugosa scion is grafted, and management after grafting is carried out; or a rose is cultured into the forming stock, mixing grafting of an ornamental fruit rugosa scion and an ornamental flower rugosa scion is carried out, and management after grafting is carried out. According to the method, the stock and scion grafting combination, the grafting period and the fixed trunk height of the stock are optimized, and it is found that the best grafting compatibility is achieved with the American floribunda no-thorn rose as the stock and a pink single-lobe rose; the grafting survival rate is the highest when grafting is carried out in the middle ten days of March; and the ornamental effect is the best when the fixed trunk height of the stock ranges from 85 cm to 95 cm. The ornamental fruit rugosa tree cultured through the method has an independent trunk, the tree shape is full and attractive, and both fruits and flowers can be ornamented; due to the fact that the ornamental fruit rugosa and the ornamental flower rugosa are grafted on the same stock, the flower ornamental effect can be further improved, the bloom time can be prolonged, and the ornamental value and the commercial value of the ornamental fruit rugosa tree can be improved.

The invention belongs to the technical field of breeding of cucurbitaceae vegetable. An interspecific hybrid F1 (Yong rootstock No. 6) of cucurbit (a melon rootstock) is obtained by hybridizing a female parent of a stable inbred line J03-2-3-2-1-5-7-4 by multi-generation of directed autocopuation screening of cucurbit materials originated from Japan and a male parent of a stable inbred line YH2-3-3-2-1-4-2-6 by multi-generation of directed autocopuation screening of local Lagenaria species produced in Ningbo. The melon rootstock selectively bred with the method provided in the invention meets objectives of breeding and has moderate growth potential, high resistance to die-back and root rot, well-developed roots, strong stalks, strong ability in absorbing nutrient, low degree of vain growth and robust hypocotyls which are not easy to become hollow, and therefore the melon rootstock is favorable for grafting. The melon rootstock has good grafting affinity and strong symbiosis affinity, and a survival rate over 95% is obtained for the grafting of the rootstock onto the watermelon specie ''Zaojia'' (8424). The engrafted melon rootstock is low temperature-resistant, moisture-resistant and barren-resistant; after field planting, the root and overground part of a grafted seedling grows fast and has sound growth potential, and the period of first harvest of the grafted seedling is 5 days earlier than that of a self-rooted seedling, the fruition rate is high and stable, weight of single fruit and fruit shape can substantially maintain the same, melon skin is not thickened, sugar degree of the grafted seedling is higher than that of the self-rooted seedling, sugar degree gradient is small, quality of the watermelon is not affected, and good adaptability is obtained.

The invention relates to a michelia shiluensis grafting propagation method. Through the steps of grafting root stock selection, scion collection, grafting time, method and post-grafting management measure optimization, michelia champaca, michelia maudiae, michelia chapensis and michelia macclurei are used as stocks; well developed branches of adult trees of michelia shiluensis are used as scions; in December to February, a cut-grafting method is used for grafting; after the grafting, the water control management is performed for 15d; after the scion sprouting branches grow to the length about 15cm, the transplanting is performed from a greenhouse to an outdoor position or a small plastic shed is removed; the water and fertilizer management is enhanced; composite fertilizers are applied once generally in 15d; the fertilization quantity is managed according to conventional seedlings. The method solves the technical problems that the existing parent trees of the michelia shiluensis are very rare; the seeds are insufficient; the germination seedling emergency rate is low; the grafting propagation is difficult and the like. The michelia shiluensis grafting propagation method with the advantages of rich stock resources, stable grafting technology, high grafting survival rate and fast seedling forming speed are provided. Michelia shiluensis seedlings in various specifications can be fast propagated; technical support is provided for rescuing, protecting and efficiently utilizing the rare and endangered lily magnolia germplasm resources of michelia shiluensis; important study values and wide application prospects are realized.

The invention discloses a breeding method for small grain type pumpkin stock variety, and belongs to the field of melon stock variety breeding. The breeding method comprises the following specific steps: researching the genetic rules of pumpkin seed size and seed melon quantity in a unit according to segregation population, and selecting parents and apolegamic combination according to the geneticrules. The male parent is a stable selfing line through seven-generation selfing screening of stock variety ''Huofenghuang'' introduced from Shandong, and has the characteristics of relatively developed root system, medium growth vigor, oblate fruit, earthy yellow peel and high drought tolerance; the female parent is a stable selfing line through six-generation selfing screening of stock variety ''Xuebai'' grafted from Shandong watermelon, and has the characteristics of approximately circular fruit, developed main roots, orange peel, prematurity and preferable high temperature resistance and low temperature resistance; and the variety is obtained through apolegamic cross combination of the male parent and the female parent. The obtained variety is small in seed leaves, is applicable for 50-hole plug seedling, high in resistance for watermelon fusarium wilt, ordered in germination, unlikely for excessive growth, long in grafting period, convenient for grating and high in grafting survival rate.

The invention provides a grafting breeding method for catalpa bignonioides, and relates to the technical field of ornamental tree planting. The grafting breeding method includes the steps of stock selecting, scion selecting, treating before scion grafting, grafting, unbundling, unwanted sprout removing, shaping and pruning, plant-transpiration-inhibitor and rooting-agent periodical spraying, nutrient and water managing and disease and pest controlling. According to the grafting breeding method for the catalpa bignonioides, the method is easy to operate and high in grafting survival rate, and the bred catalpa bignonioides is high in growth speed, hairchested in branch and trunk and dense and bright in leaf, and has the quite-high viewing value.

The invention discloses a cultivation method of rosa rugosa vat trees, and belongs to the field of garden plant cultivation. The cultivation method of the rosa rugosa vat trees comprises the followingsteps of cultivating rosa multiflora into shaping rootstocks, grafting rosa rugosa vat scions, and conducting management after grafting; or cultivating the rosa multiflora into the shaping rootstocks, conducting mixed grafting of the rosa rugosa vat scions and rosa rugosa Thunb scions, and conducting management after grafting. According to the method, the rootstock and scion grafting combination,the grafting period and the rootstock heading height are optimized, it is found that American floriferous and thorn-free rosa multiflora serves as rootstocks and has the best grafting affinity with pink single-petal roses; when grafting is conducted on the middle ten days of March, the grafting survival rate is the highest; when the rootstock heading height is 85-95 cm, the ornamental effect is the best. The rosa rugosa vat trees cultivated by means of the method have independent trunks, the tree shapes are full and attractive, and both flowers and fruits can be appreciated; the rosa rugosa vat and rosa rugosa Thunb are subjected to mixed grafting to the same rootstocks, the flower appreciation effect can be further improved, the flowering time can be prolonged, and the ornamental value and commercial value of the rosa rugosa vat trees are increased.

The invention discloses a three-way cross hybrid breeding method of a cucumber root stock. The method comprises the following steps: 1, breeding parent seeds, wherein a parent A is screened from cucumber root stock hybrids in a selfing manner, and a uniparental propagation selfing line is fixed by a single plant which is low-temperature resistant and strong in growth; the parent B is screened from F1 hybrids of the cucumber root stock in a selfing purification manner; the uniparental propagation selfing line is fixed by a single plant which is full in seed and strong in seedling stage; the parent C is screened from F1 hybrids of the cucumber root stock in a selfing purification manner; the uniparental propagation selfing line is fixed by a single plant which is medium in growth and good in grafting compatibility; 2, preparing a single cross hybrid by taking the parent A as a female parent and the parent B as a male parent; and 3, preparing the three-way cross hybrid by taking the single cross hybrid obtained in the step 2 as a female parent and the parent C as a male parent. The cucumber root stock bred by the method is good in grafting compatibility, tidy in germination, low-temperature resistant, strong in growth, and high in hybrid seed yield, and can resist more than two root diseases, and the parents has the low possibility of loss. Therefore, the defects of the existing variety are overcome.

The invention relates to the technical field of Korean pine grafting, and discloses a method for early fruiting of Korean pine. According to the method, Korean pine scions are grafted to pinus sylvestris rootstocks with an age of 10-30 years, fruiting of Korean pine in the same year or the second year is achieved; and compared with same Korean pine rootstock grafting or young different Korean pine-pinus sylvestris rootstock grafting, the fruiting time in the invention is greatly shortened. The Korean pine is subjected to high-branch, multi-head and high-age different-rootstock grafting in theinvention, so a grafting survival rate is high, cost is low, effect-taking speed is high, economic benefits are good, and the phenomenon of good and lean years does not exist.

The invention provides a Kingson privet spherical crown rapid forming method. Ligustrun lucidum is used as a stock and Kingson privet is used as a scion to carry out grafting and cultivating, and the Kingson privet is obtained. According to the method, the Ligustrun lucidum with a fast growth rate is used as the stock for grafting the Kingson privet, cost is low, efficiency is high, and obtained plant is good in the ornamental effect.

The invention discloses a stable yield-increasing breeding method for hybrid citrus grafting. The method comprises the following steps of (1) seedling selection, (2) transplanting, (3) management, (4)grafting and (5) management after grafting. The method has the excellent effects of easiness in industrial production, high growth speed, robust growth and excellent seedling quality, and is good ingrafting affinity, good in root development, high in water and fertilizer absorption capacity, easy to breed and high in grafting survival rate.

The invention discloses a breeding method of hybridization stake specially for prevention and cure of cucurbit wilt comprising, selecting the Zhejiang local long gourd variety for autocopulation, self-detaching and purification of three generations, evaluating inbred line CH1 exhibiting stable strain growth under low-temperature and low irradiance and having strong low temperature resistance as mother parent, selecting the Zhejiang local long round variety for autocopulation, self-detaching and purification of three generations, evaluating and screening inbred line YH-6 exhibiting strong low-temperature and heat resistance as father parent, preparing genetics F1 hybrid which is named 'Hulu Zhan No. 1'.

The invention belongs to the technical field of semievergreen street tree cultivation and discloses a method for cultivating tassel-like lonicera japonica based on lonicera maackii grafted lonicera japonica and lonicera hypoglauca. The method includes: cultivating lonicera maackii seedlings by taking lonicera maackii seeds as propagating materials in a breeding field, transplanting annual lonicera maackii seedlings into field, and maintaining single poles after base stumping in spring in the second year for cultivating high-trunk arbor trees; selecting annual lonicera japonica and lonicera hypoglauca as scions, and keeping two pairs of buds for scions; adopting a bark grafting or split grafting method for grafting; observing germination condition of the scion buds two weeks after grafting, judging survival condition of grafting, and removing bindings in time after the scions become branches; trimming the trees at right time after the scions survive and become branches, and cutting off lateral branches of the trunks of lonicera maackii to promote quick growth and shaping of lonicera japonica and lonicera hypoglauca. Novel semievergreen ornamental street trees are cultivated with the grafting technique.

The invention relates to a method for growing seedlings of pomelos. The method includes sequential steps of sowing seeds and cultivating rootstock; digging field planting pits; planting the rootstock seedlings in fields; carrying out grafting management. The method has the advantages that the method is high in pollination efficiency and seed collection quantity, early in seed collection time and good in stock-scion grafting compatibility, and the rootstock is high in disease resistance; shortcomings of low winter and spring temperatures, short illumination time, great humidity variation and insufficient soil nutrient supply can be overcome, and growth of the rootstock seedlings can be greatly accelerated; seedling recovering stages due to damage to root systems can be omitted, the growth density of plants is obviously lowered after the plants are planted in the fields, accordingly, tree growing spaces can be greatly increased, utilization of illumination, water and nutrients can be greatly improved, a large quantity of nutrition can be accumulated in trees, tips of branches can grow fast, trunk diameters and thicknesses can be quickly increased, grafting can be carried out in advance, tree forms can be formed early after the trees are grafted, flowering and fruit bearing can be shifted to an earlier time, and economic benefits can be realized quickly; organic fertilizers contain comprehensive and balanced nutritional components, accordingly, growth and development requirements of the pomelos can be met, and growth of the pomelos can be accelerated.

The invention discloses a rapid culture method for potted apple moving and grafting. The method includes the steps of potted seedling selection, quick forming, apple moving and grafting, and matched management. Specifically, strong grafting seedlings with the stem thickness of 1 cm or above are selected, the seedlings are planted in a pot before germination, and the trunk is fixed at the position15 cm above a grafting position; after germination, 3-5 buds are reserved to develop into branches to form an open-center shape; when the branches grow to 25 cm, pinching, branch pulling and shaping are carried out, and quick formation is achieved; then, the same kind of single young fruits with the diameter of 5-6 cm are collected or cut grafting or attaching grafting is carried out for cluster grafting, and matched management is also used for maintenance. If the method is used for treatment, potted apples can bear fruits in the current year, the bottleneck of a long cultivation period of apple potting is broken through, and the method has great significance for batch rapid production.

The invention discloses a three-way cross hybrid breeding method of a cucumber root stock. The method comprises the following steps: 1, breeding parent seeds, wherein a parent A is screened from cucumber root stock hybrids in a selfing manner, and a uniparental propagation selfing line is fixed by a single plant which is low-temperature resistant and strong in growth; the parent B is screened from F1 hybrids of the cucumber root stock in a selfing purification manner; the uniparental propagation selfing line is fixed by a single plant which is full in seed and strong in seedling stage; the parent C is screened from F1 hybrids of the cucumber root stock in a selfing purification manner; the uniparental propagation selfing line is fixed by a single plant which is medium in growth and good in grafting compatibility; 2, preparing a single cross hybrid by taking the parent A as a female parent and the parent B as a male parent; and 3, preparing the three-way cross hybrid by taking the single cross hybrid obtained in the step 2 as a female parent and the parent C as a male parent. The cucumber root stock bred by the method is good in grafting compatibility, tidy in germination, low-temperature resistant, strong in growth, and high in hybrid seed yield, and can resist more than two root diseases, and the parents has the low possibility of loss. Therefore, the defects of the existing variety are overcome.

The invention discloses a walnut nutrition cup seedling culture method. The walnut nutrition cup seedling culture method includes the steps of variety selection, stock seed processing, walnut nutrition cup preparation, sowing and seedling raising, nutrition cup seedling transplanting, nutrition cup seedling trunk cutting, and grafting. By means of nutrition cup seedling culture, an excellent and low-cost matrix is selected, existing nutrient soil and moisture in a nutrition cup are fully utilized by nursery stocks, and direct growth can be achieved without seedling recovering. Compared with bare-rooted seedling afforestation, the method has the characteristics and advantages of being resistant to drought and poor soil and high in afforestation survival rate, nursery stock roots especially tap root systems can be kept complete and can not be damaged, and the afforestation survival rate is high.

The invention discloses a method for breeding small-seeded pumpkin rootstock varieties, and belongs to the field of melon rootstock breeding. The specific steps of the breeding method are as follows: study the genetic law of pumpkin seed size and the number of seeds of a single melon according to the isolated population, and select parents and matching combinations according to the genetic law. The male parent is a stable inbred line selected from the rootstock variety "Huofenghuang" introduced from Shandong after 7 generations of self-crossing. This is a stable inbred line selected from the fertile plants of Shanxi melon grafted rootstock variety "Snow White" after 6 generations of selfing. It is characterized by round fruit, well-developed taproot, orange peel, early maturity, high temperature resistance and low temperature resistance. Strong; obtained from the above male and female parent crosses. The obtained varieties have small cotyledons, are suitable for seedling cultivation in 50-hole plug trays, are highly resistant to watermelon wilt, have neat germination, are not easy to grow excessively, have a long grafting period, are convenient for grafting, and have a high grafting survival rate.

The invention discloses a planting method of Korla fragrant pear. It belongs to the technical field of agriculture, forestry and fruit industry. The method comprises the following steps: planting rootstocks: planting rootstocks in the spring of the first year; grafting an intermediate stock "Xinli No. 9" on the rootstocks in the spring of the second year; grafting Korla fragrant pears in the spring of the third year. Compared with the prior art, the present invention has the following beneficial effects: using the variety "Xinli No. 9" as the dwarfed interstock of Korla fragrant pear, compared with other dwarfed interstocks, it has good grafting affinity, and is suitable for grafting. After that, there is no "big foot" phenomenon, and it has a certain dwarfing performance for Korla fragrant pear, which is manifested in that the growth of branches is only 3 / 4 of that of Korla fragrant pear directly grafted with Du pear as the rootstock; at the same time, it has strong cold resistance. , suitable for promotion and application in the colder southern Xinjiang, suitable for controlling the vigorous growth of Korla fragrant pear varieties, and conducive to early fruiting of pear trees.

The invention discloses a rootstock selecting method for domestic mainly-planted varieties of cerasus. The rootstock selecting method includes the following steps that S1, the domestic main varietiesare selected, and scion materials are further selected; periphery, middle and upper branches of the annual different domestic main varieties of cerasus are selected and used as grafting scions; S2, the scions are treated, and the scions are collected when the cherry blossoms of the cerasus do not yet bud and refrigerated at low temperature; S3, rootstocks are selected, and the selected rootstock species include Cerasus serrulata rootstocks, Prunus conradinae rootstocks, and Prunus dielsiana Schneid rootstocks; S4, a grafting operation is carried out when the rootstocks begin to sprout; S5, management is carried out after grafting, and in the later period, after incisions are healed, bandages can be removed; and S6, the grafting success rate of different domestic mainly-planted varieties ofcerasus on different types of rootstocks is counted and recorded. The rootstock selecting method for the domestic mainly-planted varieties of cerasus is simple and easy to operate.

The invention provides a method for cultivating tomato rootstocks with high compatibility and resistance to root knot nematode disease, which belongs to the field of tomato grafting rootstock breeding. The problem that the existing anti-root-knot-nematode rootstock breeding method causes tomato production reduction or even total crop failure and can be hardly applied in a large scale in productiondue to the weak roots, slow growth and grafting incompatibility of the rootstocks bred by the method can be solved. The technical scheme includes the following steps: selecting a specific field disease nursery to plant tomato rootstocks; evaluating the characteristics of tomato rootstocks by introducing two indexes, namely, the root development degree and the root knot nematode incidence, and breeding rootstock inbred lines with well-developed roots and resistance to root knot nematode disease; and identifying the field compatibility of the bred rootstock inbred lines through identifying scions during the whole growth period to obtain tomato rootstocks with high compatibility and resistance to root knot nematode disease. The method can be applied to the production of various tomato varieties.

The invention discloses a cultivation method for improving cold resistance of an improved peach variety. The problems of shortage of improved peach variety in Hexi district in Gansu province and difficulty of large-scale development of peaches are solved. The method comprises the following steps of: A selecting stocks, namely selecting local seedling Gansu wild peach stocks; B, building a stock garden, namely adopting 2-3 perennial wild peach stock seedlings, digging planting holes according to the planting space of 2*4m, laying a crop straw layer with the thickness of 15cm at the bottoms of the holes, uniformly mixing and filling the holes through surface soil, sand and thoroughly decomposed sheep manure, watering, settling and planting; C, grafting, namely taking developmental branches of the improved peach variety which have full growth and full eyes as scions, performing multi-branch top grafting on 20, June to 10, August by employing a T-shaped budding method, and finishing grafting of 6-10 buds; D, managing after grafting; and E, trimming. The local seedling Gansu wild peach stocks are selected, the cultivation method is high in adaptability and high in grafting compatibility, and the fruiting year limit is prolonged; and moreover, the cold resistance of the improved peach variety is greatly improved, and the aim of safely overwintering the exposed improved peach variety is fulfilled.

The invention provides a method for cultivating a high-affinity fusarium wilt-resistant tomato rootstock, and belongs to the field of tomato grafting rootstock breeding. The problems of yield reduction or even no harvest and difficult large-area application in production of tomatoes, caused by weak roots, slow growth and grating non-affinity of rootstock bred by existing fusarium wilt-resistant rootstock breeding methods are solved in the invention. The method comprises the following steps: selecting a specific field disease nursery, planting tomato rootstocks, evaluating the characteristics of the tomato rootstocks by introducing two indexes of root development degree and fusarium wilt-resistant incidence, selecting a rootstock inbred line having developed roots and having resistance to fusarium wilt, and carrying out field affinity identification on the bred rootstock inbred line in the whole growth period by identifying scions in order to obtain the high-affinity fusarium wilt-resistant tomato rootstock. The method can be applied to the production of various varieties of tomatoes.

The method for breeding special hybrid rootstocks for the prevention and treatment of facility watermelon wilt disclosed by the present invention is to select local long gourd varieties in Zhejiang, separate and purify them through at least three generations of self-crossing, identify and screen out the plants that grow steadily under low temperature and low light conditions, and have strong low temperature resistance The inbred line CH-1 was used as the female parent, and the inbred line YH-6 with strong low temperature resistance, drought tolerance and heat resistance was identified and screened as the male parent. A first-generation hybrid was prepared and named "Huluzhen No. 1". The hybrid rootstock selected by the method of the present invention meets the breeding objective, is highly resistant to watermelon wilt, has good grafting affinity with watermelon, and has strong symbiotic affinity, and is suitable for continuous cropping watermelon grafting and cultivation in the south with low temperature and rain in the early stage and high temperature in the later stage, and under facility cultivation conditions Good moisture and heat resistance, stable growth under low temperature and weak light, easy to set fruit, can effectively prevent and control watermelon wilt, increase watermelon production and improve quality.

The invention discloses a method for grafting watermelon by utilizing a millstone pumpkin as a stock, which comprises the steps of seed selecting and disinfecting, firstly soaking seeds (millstone pumpkin seeds and watermelon seeds) into a well-prepared water tank filled with two parts of boiled water and one part of cool water, wherein the water temperature after mixing is 60-70 DEG C and the water quantity is five times than the seed quantity; then fully stirring, rinsing the seeds with clean water after the temperature is lowered down to 37 DEG C, later soaking the rinsed seeds in the cleanwater for 11-12 hours, fishing out and putting the seeds in a constant temperature cabinet for accelerating germination; subsequently earthing up, sowing and grafting, wherein the grafting can be implemented by using a peg graft method, an approach grafting method and a cleft grafting method; after grafting, sprinkling water mist on the second day, photosynthesizing and permanent planting after 20-25 days. The watermelon grafting method is characterized by reducing blight, improving output and controlling survival rate to be over 95 percent.