46results about How to "Improve seed production efficiency" patented technology

The invention belongs to the field of plant life sciences, and discloses a method for improving the seed production efficiency of hybrid rice through large-scale improvement of restorer seeds. The method comprises the following steps of: (1) cultivating large-grain restorer hybrid rice with characteristics of rice (oryza sativa) cgmcc no.3461; (2) performing grouped seed production of the large-grain restorer hybrid rice and small-grain normal grain type sterile line hybrid rice; (3) performing mixed harvesting; and (4) cleaning and separating seeds. According to the method, a large amount of seed production rice fields can be saved, the labor input in the seed production process can be reduced, the operating procedure can be simplified, and the opportunity of machine congestion can be reduced, so that the seed production cost is reduced, the seed purchase cost of rice farmers is reduced, and the income of the rice farmers is increased.

The invention provides a culture preparing method for bamboo fungus, which includes the following steps: adopting a kernel solid medium for culture activation under proper culture condition, adopting soybean fluid medium to cultivate activated cultures, and finally obtaining a bamboo fungus fluid culture with uniform and dense mycelium pellets with proper sizes, then inoculating the culture to a bamboo slag solid medium for cultivation, and obtaining the cultivated culture. According to the method, time in culture preparation is shortened, the culture preparation efficiency is improved, and the cultivated culture is suitable for traditional cultivation patterns.

The invention provides a convolutional-neural-network-based primary classification method for an ear image of corn seed production. The method comprises: an original training sample set and a testingsample set of corn ear images; on the basis of a migration learning method, discrimination is carried out by using an AlexNet convolutional neural network to obtain the type of each ear testing sampleand an actual type of each testing sample, and the accuracy rate of each determination result is determined; if the accuracy rate is in a preset range, the AlexNet convolutional neural network is optimized according to an expanded ear training sample set to obtain a second convolutional neural network, and the type of each testing sample in the testing sample set is determined again. According tothe invention, the tedious and one-sided problems of manual extraction of ear image features are solved by learning the ear image autonomously from low-level features like the color and side to high-level features like the angular point and the shape from a hidden layer and thus the convolutional neural network has capabilities of selecting image features autonomously and carrying out learning and identification. A novel method is provided for primary automatic ear selection of the corn seed production.

The invention relates to a breeding and seed producing method for a recessive gene male sterile line of cauliflower. The invention adopts the technical scheme that a recessive gene male sterile mutant strain of the cauliflower is subjected to sister hybrid and progeny selfing separation to breed a sterile strain with the sterile rate of 100 percent and the sterile degree reaching or approximating to 100 percent; the sterile line used as a female parent is hybridized and combined with an excellent selfing line; and a combined hybrid seed is produced by applying a honeybee pollination method. The invention has the advantages that: firstly, a new sterile source for heterosis advantage utilization of the cauliflower is provided and the defects of cytoplasmic sterility are overcome; secondly, the recessive gene male sterile line is maintained and reproduced by using a tissue culture technology and various works for filed isolation and preproduction of the sterile line and a maintenance line are omitted, so that the influence on preproduction of the sterile line caused by weather, season, land and isolating conditions is avoided; and thirdly, a hybrid strain is produced by using the recessive gene male sterile line and honey can be used for pollination, and thus the seed production cost is reduced and the seed production efficiency is improved.

The invention discloses a method for improving seed production efficiency of a sponge gourd. The method comprises the steps of seeding the sponge gourd in two seeding dates in March, regarding the time when a female flower is opened above 15 nodes of the sponge gourd in the second seeding date as a pollination beginning period, picking off an opened male flower bud of a male parent at 16:30-17:30 of the day before pollination, keeping the male flower bud in a 4 DEG C refrigerator, selecting an unopened female flower bud from 14:30-17:30 of the pollination day, performing the pollination, shaking a seed gourd when a coat of the seed gourd becomes brown after 60 days from the pollination, and performing harvesting when a seed in the seed gourd rustles, wherein a difference between the first seeding date and the second seeding date is 5-10 days. The method adopts the advance pollination, and the female flower is unopened during the pollination, so that advance bagging is not required; complicated operation of bagging and bag removal for hybridization is saved; the hybridization manpower is greatly reduced; the hybridization efficiency is improved; a seed bud rate, the thousand kernel weight and a hybrid seed yield of the sponge gourd are increased.

The invention provides a corn seed production cluster screening method and a device based on a double-channel convolutional neural network. The method comprises the following steps: inputting a corn seed production cluster image with a corn seed production cluster type label into a first branch model and a second branch model of a double-channel convolutional neural network in advance; and respectively extracting the characteristic quantities of the corn seed production cluster images and inputting the characteristic quantities into a fusion classification model for fusion and classification,thereby training the double-channel convolutional neural network, and then obtaining the corn seed production cluster types corresponding to the acquired corn seed production cluster images by using the trained double-channel convolutional neural network. According to the method, the advantages of the first branch model and the second branch model can be combined; the classification accuracy of the model is improved, the problems that it is difficult to manually extract deep features of corn ear images and it is difficult to obtain high classification accuracy are effectively solved, the cornseed production operation process is greatly simplified, the corn seed production efficiency is improved, the labor cost is saved, and the method has important reference significance for improving thecorn ear seed production efficiency.

The invention relates to a cotton breeding method using sub-red plant mutation of upland cotton which belongs to the technique field of agricultural breeding. In the method, the strain with the property of sub-red plant mutation is selected for breeding according to the leaf color property, the flower color property or the genetic gene property; the strain with the property of sub-red plants is taken as the parent strain to be interbred with another selection strain or variety; thereby the strain or variety with the property of sub-red plant mutation is obtained by seed selection. The cotton breeding method can be specifically applied to obtain a variety with the property of sub-red plant mutation, a fine hybrid cotton variety with good function of leaf photosynthesis or a male sterile line with the property of sub-red plants, etc., thus improving the output or the seed production efficiency of hybrid cotton, etc.

The invention provides a method for improving the hybrid seed production efficiency and increasing the yield of hot pepper. The method comprises the following steps: adjusting the sowing time, reasonably performing dense planting in a facility, adjusting plants, collecting pollen, emasculating and pollinating, performing plant management after pollination, harvesting seeds and the like. Through covering with nylon gauze in the facility for isolated breeding, the purities of parents are guaranteed to meet original seed requirements; through adjustment of the sowing time, the most suitable climatic condition is provided for flower synchronization of the male and female parents and the pollination; through reasonable dense planting in the facility, a suitable microclimate environment can be created for hot pepper seed production, and the planting density and the planting ratio of the male and female parents are determined according to the parental plant height and pollen collecting requirements; through improvement on a method for collecting pollen of the male parents, the pollen amount and the pollen quality are guaranteed; emasculation, pollination and labeling are completed in onetime, so that repeated pollination is not needed, the labor is reduced, and the seed production efficiency is improved; through plant management after the pollination, the seed setting rate is also improved; the problems that in the prior art, the efficiency is low, the yield is not high and the purity is unstable in the hybrid seed production process of the hot pepper are solved.

The invention discloses a large-scale breeding method and equipment for hybrid young scallops. Through temperature regulation and other technical means, gonads of bay scallops and gonads of patinopecten yessoensis both of which become mature at the same time lay eggs and produce sperms respectively; then, a stepwise cooling mode is adopted for lowering the temperature of egg laying and spermiationwater for the bay scallops to be suitable for patinopecten yessoensis to lay the eggs, and then the egg laying and spermiation water for the bay scallops is mixed with the egg laying water for patinopecten yessoensis. The vitality of the sperms is maintained, the fertilization rate, hatching rate, survival rate and metamorphosis rate of planktonic larvae in a hybridization process are increased,and the production efficiency of the hybrid young scallops is improved. The hybrid young scallops also have the advantages of being high in growth speed, wide in temperature-resistant range, high in adult scallop yield and the like.

The invention relates to a method for producing cotton seeds by inducing long cotton stigmas, belonging to the technical field of cotton hybrid seed production and suiting for producing cotton hybrid seeds. The method comprises the following steps of: dipping a GA3 solution with the concentration of 1000 PPM (Parts Permillion) on the bud base of 8-18 days and dipping each flower with 150-200 microlitre of GA3 solution; inducing more than 95 percent of stigmas to be 8mm higher than a stamen cluster; and directly pollinating without removing stamens after the cotton blossoms out. Flowers are quantitatively dipped by adopting the exogenous hormone GA3, more than 95 percent of stigmas can be stably induced to be 8mm higher than the stamen cluster, and the purity of the produced hybrid seeds can accord with the production requirement.

An application of the transgenic crop's pollen competitor in culturing the hybrid cotton includes such steps as choosing the non-resistant cotton as female parent, choosing transgenic cotton as male parent, spraying the pollen competitor onto the flower of female parent and pollinating with the pollen of male parent or mixing the pollen of male parent with the pollen competitor liquid and spraying the mixture onto the flower of female parent, hybridizing, and coating the obtained seeds with the seed or seedling purity selecting agent.

The invention discloses a fertilizer special for rice breeding. The fertilizer special for rice breeding comprises the following raw materials in parts by weight: 20-50 parts of cow dung, 3-20 parts of kelp residue, 30-50 parts of peat, 30-50 parts of urea, 3-11 parts of ammonium dihydrogen phosphate, 2-9 parts of sodium pyrophosphate, 3-11 parts of potassium fulvic acid, 2-8 parts of potassium 4-butanoate, 2-5 parts of calcium nitrate, 1-3 parts of zinc citrate, 2-4 parts of copper sulfate, 2-5 parts of manganese sulfate, 1-3 parts of ferrous sulfate, 2-5 parts of sodium molybdate, 2-5 partsof boric acid, 1-5 parts of a microbial agent, 1-3 parts of chitosan, and 10-35 parts of modified montmorillonite. The fertilizer special for rice breeding is reasonable in formula, complete in nutrition, good in slow-releasing effect, high in utilization rate, and capable of promoting the growth of breeding rice, and increasing the breeding yield.

The invention discloses a fruit and stem processing device used for dragon fruit seed production. The fruit and stem processing device comprises a base, a bottom fixing platform, a guiding upright post, an upper sliding seat, an upper connecting plate, a top fixing platform, a rotating mechanism, a lower sliding seat, a lower connecting plate and an annular cutter, wherein the bottom fixing platform is arranged on the base in a rotating way and is upward convexly provided with three lower fork shafts; the lower end of the guiding upright post is fixed on the base; the upper sliding seat sheathes the guiding upright post; one end of the upper connecting plate is connected with the upper sliding seat; the top fixing platform is arranged on the upper connecting plate in a rotating way and is downward convexly provided with three upper fork shafts; the rotating mechanism is used for driving the bottom fixing platform or the top fixing platform to rotate; the lower sliding seat is arranged on the guiding upright post and driven to slide by a lifting mechanism; one end of the lower connecting plate is connected with the lower sliding seat; the annular cutter comprises a cutter head and a cutting blade; and the cutter head is fixed on the lower connecting plate. The fruit and stem processing device can guarantee safety and stability during dragon fruit seed production treatment, so that fruits and stems can be avoided from being damaged; and meanwhile, the fruit and stem processing device is easy to use and is time-saving and labor-saving, so that the seed production efficiency is improved.

The locational cotton cross breeding method includes seeding in proper time, reasonable close planting, proper line ratio, pruning, and eunuching and pollination. The key points of the present invention includes pruning technology, which consists of eliminating vegetative shoot, superfluous bud and top of male parent, topping vegetative shoots and topping 15 or 16 fruit shoots, eliminating group tip, leaving 85000-112000 fruit joints each module and eliminating superfluous bud timely; and the line ratio between male parent and female parent of 1 to 9-10. Compared with available technology, the present invention has 31.9 % reduced eunuching time, 46.6 % reduced pollination time and 10-13 % increased yield.

The invention discloses a dragon fruit seed production machine. The dragon fruit seed production machine comprises a base, a bottom fixing platform, a guide column, an upper sliding sleeve, a top fixing platform, a lower sliding sleeve and a cutter sleeve, wherein the bottom fixing platform is fixed to the base, three lower fork shafts which are uniformly distributed along the same circumference are arranged in the bottom fixing platform in an upward convex mode, the lower end of the guide column is fixed to the base, the upper sliding sleeve is arranged on the guide column in a mode that the upper sliding sleeve is capable of sliding up and down, the top fixing platform is connected with the upper sleeve through an upper connecting rod, three upper fork shafts which are located right above the corresponding lower fork shafts are arranged on the top fixing platform in a downward convex mode, the lower sliding sleeve is arranged on the guide column and driven by a lifting mechanism to slide up and down, the cutter sleeve comprises a sleeve body and three cutters which are uniformly arranged at the lower end of the sleeve body along the same circumference, and the sleeve body is connected with the lower sleeve through a lower connecting rod. By the adoption of the dragon fruit seed production machine, the safety and stability can be ensured when seed production processing is conducted on dragon fruits, and therefore the damage on fruit stems is avoided, the usage is convenient, the time and labor are saved, and the seed production efficiency is improved.

The invention provides a multi-product high-scion hybrid seed production method for persimmon trees. The method includes: taking a position where there are no male persimmon germplasm resources within a radius of 10-15km as hybrid seed production land; selecting the persimmon trees without diseases and pests as stock plants from the hybrid seed production land; grafting male plants and different varieties with female flowers rather than male flowers on the stock plants as female plants and performing solid seed production after the female plants grow for 2-3 years; wherein varieties of the male plants are mother-in-law persimmons, sweet persimmons or non-astringent; the male plants are grafted at top ends of the female plants and the female plants are grafted around the stock plants. With the method, hybrid seeds obtained each year on one stock plant of 30-40 years old can be as high as 7519-8162 particles, which are far higher than that with a traditional hybrid method (367 particles), and seed production efficiency is improved.

The invention discloses a method for breeding a polygene polymeric two-line sterile line suitable for use by mechanized mixed-planting seed production. After rice parents with a recessive brown or pocked or black-brown specific marker are hybridized with a good two-line sterile line of rice which contains a herbicide-resistant endogenous gene and a dominant semi-dwarf gene and is insensitive to gibberellin, selfing is carried out, a restorer is utilized for combination testing, and a two-line sterile line with high combining ability, the genes and performance characteristics is chosen out. Themethod realizes polygene polymerization of the two-line sterile line; in the process of carrying out mixed-planting seed production with a combination of the two-line sterile line, after pollinationis complete, a corresponding herbicide is sprayed to kill a male parent, guaranteeing the production of qualified hybrid seeds; moreover, since the two-line sterile line is insensitive to the gibberellin, the defects of overhigh plants and difficult pollination caused by the spraying of gibberellin in the process of seed production are overcome, and therefore the yield of seed production is increased.

The invention relates to the technical field of enzyme manufacturing equipment and discloses a seed-discharging and filtering device for enzyme manufacturing. The seed-discharging and filtering devicecomprises a container, one side of the container is fixedly connected with a seed-discharging guide pipe, the end, away from the container, of the seed-discharging guide pipe is in threaded connection with a protective cover, a liquid outlet pipe is fixedly connected to the position, on the side face of the container, of the lower part of the seed-discharging guide pipe, an electromagnetic valveis arranged outside the liquid outlet pipe, and the end, away from the container, of the liquid outlet pipe is in threaded connection with a sealing plate. According to the seed-discharging and filtering device for enzyme manufacturing, through the driving effect of a driving device, a power rod moves telescopically, thus an extrusion plate extrudes fruit raw materials in the container to generateliquid, and seeds enter an inner cavity of a filtering plate through a seed outlet, so that enzymes are effectively prevented from going bad due to being infected in the manufacturing process while the seed discharging efficiency in the fruit enzyme manufacturing process is improved, and the efficacy of the enzyme is further ensured.

The invention discloses a creation method of short style tomato, which uses a CRISPR / Cas9 system to carry out mutation knockout on the fifth exon or the sixth exon of a tomato PS-2 gene, so that the style of the obtained mutant strain is shortened, and the emasculation efficiency is obviously improved.

The invention discloses a manual pitaya seed production machine. The machine comprises a base, a base fixed table, a guiding stand column, an upper slide carriage, a top fixed table, a lifting screw rod, a lifting handle, a lower slide carriage and a tool casing, wherein the bottom fixed table is fixed on the base, and three lower fork shafts are upward and convexly arranged on the bottom fixed table; the lower end of the guiding stand column is fixed on the base; the upper slide carriage is arranged on the guiding stand column in a lifting manner; the top fixed table is connected with the upper slide carriage through an upper connecting rod, and three lower fork shafts are downward and convexly arranged on the top fixed table; the lifting screw rod can be arranged on the guiding stand column in a rotating manner; the lifting handle is connected with the upper end of the lifting screw rod; the lower slide carriage is in engaged connection with the lifting screw rod through threads; the tool casing comprises an annular cover body and three blades which are uniformly arranged at the lower end of the cover body along the same circumference; and the cover body is connected with the lower slide carriage through a lower connecting rod. The manual pitaya seed production machine ensures safety and stability when pitaya is subjected to seed producing treatment, so that fruit stems can be protected from being damaged. The manual pitaya seed production machine is convenient to use and can saves time and labor to improve seed production efficiency.

The invention relates to a synchronous seeding transplanter for hybrid rice seed production. The synchronous seeding transplanter for the hybrid rice seed production comprises a machine frame, a ditching and ridging device, a seeding device, a rice transplanting device and a power drive device, wherein the ditching and ridging device, the seeding device, the rice transplanting device and the power drive device are fixed in opposite to the machine frame. The ditching and ridging device is arranged in front of the seeding device and the rice transplanting device, and an output end of the power drive device is respectively connected with the seeding device and the rice transplanting device. The invention further relates to a synchronous seeding transplanter method for the hybrid rice seed production. The synchronous seeding transplanter for the hybrid rice seed production and the synchronous seeding transplanter method thereof have the advantages of being simple in structure and saving in energy and capable of effectively improving seed production efficiency, accurately controlling flower synchronization of male parents and female parents, and belong to the field of agriculture machinery.

The invention belongs to the technical field of all-female line breeding of bitter gourds, and specifically relates to a selection method of all-female lines of fine-variety bitter gourds. According to the selection method of the all-female lines of fine-variety bitter gourds, all-female materials of bitter gourds are utilized; and then, continuous back-crosses are performed so as to transform all-female genes of bitter gourds into materials to be improved, so that fine-variety all-female lines of bitter gourds are developed. Treated by utilizing silver nitrate, the all-female bitter gourd plants show the regularity of female flowers to hermaphrodite flowers to female flowers; and thus, interference from predominately gynoecious plants and fake all-female plants is avoided. Used as femaleparents, the bitter gourd all-female lines prepared by the method do not require castration for producing hybrids; and thus, hybrids with high purity can be produced with seed preparation efficiency improved and costs saved.

The invention discloses a method for creating a short-style tomato. The method uses the CRISPR / Cas9 system to mutate and knock out the 5th or 6th exon of the PS-2 gene of tomato, and the style of the obtained mutant strain is shortened , significantly improved the efficiency of emasculation.

The invention discloses a seed production method for three-line hybrid wheat, a produced seed and application of produced seed, relates to the technical field of hybrid wheat seed breeding, and solves the problem that the seed production efficiency in the conventional three-line hybrid wheat seed production process is low. By the use of the characteristic that wheat has a vernalization ecological difference, the seed production method comprises the following steps of 1. combining parents, namely forming a parent combination 1 by selecting a winterness sterile line female parent and a springness restorer line male parent, or forming a parent combination 2 by selecting a springness sterile line female parent and a winterness restorer line male parent; 2. performing sowing, namely sowing seeds of the parent combination 1 or the parent combination 2, wherein the seeds of the springness restorer line male parent or the winterness restorer line male parent are sowed in winter, so that the seeds can live through the winter in soil in the form of germs; 3. performing field management after the seeds are sowed; and 4. after the wheat is mature, uniformly harvesting matured wheat to obtain the hybrid seeds of wheat.

The invention relates to a method for producing cotton seeds by inducing long cotton stigmas, belonging to the technical field of cotton hybrid seed production and suiting for producing cotton hybrid seeds. The method comprises the following steps of: dipping a GA3 solution with the concentration of 1000 PPM (Parts Permillion) on the bud base of 8-18 days and dipping each flower with 150-200 microlitre of GA3 solution; inducing more than 95 percent of stigmas to be 8mm higher than a stamen cluster; and directly pollinating without removing stamens after the cotton blossoms out. Flowers are quantitatively dipped by adopting the exogenous hormone GA3, more than 95 percent of stigmas can be stably induced to be 8mm higher than the stamen cluster, and the purity of the produced hybrid seeds can accord with the production requirement.

The invention discloses a breeding method of a curly-leaf sesame inbred line. The breeding method comprises the following steps: 1) with white sesame Ezhi No.4 as a female parent and CLSU-9*J972 as a male parent, breeding a hybrid combination F1; 2) selfing F1 hybrid seeds to obtain F2; 3) with a curly-leaf plant in an F2 population as a female parent, crossing with a non-curly-leaf sister plant or an improved variety in the same family to obtain a hybrid F1; 4) with the hybrid F1 as a female parent, crossing with a non-curly-leaf sister plant in the same family to obtain a sister cross F1, or backcrossing with the improved variety to obtain BC1F1 seeds; 5) selecting a curly-leaf plant from the sister cross F1 or the BC1F1 generation for performing sister crossing or backcrossing to reserve seeds; 6) performing 3-5 generations of sister crossing or backcrossing to obtain the curly-leaf sesame inbred line after homozygosis. By the breeding method, a new breeding way for establishing germplasm resources of curly-leaf sesame is provided; curly-leaf leaves are fat and tender, are high in biological yield and can be used as vegetables, so that compared with the conventional variety, the curly-leaf sesame inbred line has obvious advantages, and thus can be popularized and applied in breeding and production.

The invention discloses a method for breeding a polygene polymeric two-line sterile line suitable for use by mechanized mixed-planting seed production. After rice parents with a recessive brown or pocked or black-brown specific marker are hybridized with a good two-line sterile line of rice which contains a herbicide-resistant endogenous gene and a dominant semi-dwarf gene and is insensitive to gibberellin, selfing is carried out, a restorer is utilized for combination testing, and a two-line sterile line with high combining ability, the genes and performance characteristics is chosen out. Themethod realizes polygene polymerization of the two-line sterile line; in the process of carrying out mixed-planting seed production with a combination of the two-line sterile line, after pollinationis complete, a corresponding herbicide is sprayed to kill a male parent, guaranteeing the production of qualified hybrid seeds; moreover, since the two-line sterile line is insensitive to the gibberellin, the defects of overhigh plants and difficult pollination caused by the spraying of gibberellin in the process of seed production are overcome, and therefore the yield of seed production is increased.

The invention discloses a manual pitaya seed production machine. The machine comprises a base, a base fixed table, a guiding stand column, an upper slide carriage, a top fixed table, a lifting screw rod, a lifting handle, a lower slide carriage and a tool casing, wherein the bottom fixed table is fixed on the base, and three lower fork shafts are upward and convexly arranged on the bottom fixed table; the lower end of the guiding stand column is fixed on the base; the upper slide carriage is arranged on the guiding stand column in a lifting manner; the top fixed table is connected with the upper slide carriage through an upper connecting rod, and three lower fork shafts are downward and convexly arranged on the top fixed table; the lifting screw rod can be arranged on the guiding stand column in a rotating manner; the lifting handle is connected with the upper end of the lifting screw rod; the lower slide carriage is in engaged connection with the lifting screw rod through threads; the tool casing comprises an annular cover body and three blades which are uniformly arranged at the lower end of the cover body along the same circumference; and the cover body is connected with the lower slide carriage through a lower connecting rod. The manual pitaya seed production machine ensures safety and stability when pitaya is subjected to seed producing treatment, so that fruit stems can be protected from being damaged. The manual pitaya seed production machine is convenient to use and can saves time and labor to improve seed production efficiency.

The invention discloses a dragon fruit seed production machine. The dragon fruit seed production machine comprises a base, a bottom fixing platform, a guide column, an upper sliding sleeve, a top fixing platform, a lower sliding sleeve and a cutter sleeve, wherein the bottom fixing platform is fixed to the base, three lower fork shafts which are uniformly distributed along the same circumference are arranged in the bottom fixing platform in an upward convex mode, the lower end of the guide column is fixed to the base, the upper sliding sleeve is arranged on the guide column in a mode that the upper sliding sleeve is capable of sliding up and down, the top fixing platform is connected with the upper sleeve through an upper connecting rod, three upper fork shafts which are located right above the corresponding lower fork shafts are arranged on the top fixing platform in a downward convex mode, the lower sliding sleeve is arranged on the guide column and driven by a lifting mechanism to slide up and down, the cutter sleeve comprises a sleeve body and three cutters which are uniformly arranged at the lower end of the sleeve body along the same circumference, and the sleeve body is connected with the lower sleeve through a lower connecting rod. By the adoption of the dragon fruit seed production machine, the safety and stability can be ensured when seed production processing is conducted on dragon fruits, and therefore the damage on fruit stems is avoided, the usage is convenient, the time and labor are saved, and the seed production efficiency is improved.