133 results about "Fruit set" patented technology

This invention provides a method for storing mango seeds, belonging to the field of seed preservation technology. The method involves cutting off mango fruits with embryos, along with their pedicels and branches, 77-84 days after fruit set. A mixture of pyraclostrobin, lambda-cyhalothrin, and chlorothalonil is sprayed on the fruit, pedicels, and branches. After drying, styrene-butadiene latex is applied to the pedicels and branches. Once the latex dries, a mixture of guanidine-copper acetate and benzoyl-pyraclostrobin is sprayed on the fruit, pedicels, and branches again. After drying, the mango fruits with petioles and branches are placed in a sealed box and stored at 10-14°C. The mango variety used is the Golden Phoenix mango. This invention increases the storage period of Golden Phoenix mango seeds from 1.5 months to 5 months, which is of great significance for the genomics and cell biology research of Golden Phoenix mangoes.

The disclosure provides a system for cultivating a pepper plant, wherein the system comprises a light generating device and a control system, wherein the light generating device is configured to provide device light to the pepper plant, wherein the device light comprises one or more of red light and far red light, wherein the red light comprises one or more wavelengths in the range of 600-700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700-800 nm.

The invention relates to the technical field of gene engineering, in particular to application of a knockout SlABCB13 gene in increasing the soluble sugar content of tomato fruits. The function of the SlABCB13 gene is deleted by mediating gene editing, so that the content of soluble sugar (cane sugar, fructose and glucose) and the content of soluble solids in tomato fruits are remarkably increased, and the SlABCB13 participates in sugar transport of the tomato fruits. Meanwhile, the mutant does not influence related yield indexes such as plant height, stem diameter, fruit size, fruit setting number and single-plant fruit yield, and a new thought is provided for the problem that yield and quality are difficult to consider in existing tomato breeding.

This invention belongs to the field of biological agents and plant breeding technology, specifically relating to the application of *Trichoderma tumefaciens* T-51 in promoting flowering, fruit setting, and vegetative growth in plants. The *Trichoderma tumefaciens* T-51 described in this invention has the preservation number CCTCCNO: M2015729. Applying a suspension containing *Trichoderma tumefaciens* T-51 to the roots of plant seedlings can advance the flowering time and increase the number of flowers; it can also improve the number and rate of fruit set; and it can promote vegetative growth, especially increasing plant height, number of stem nodes, and number of leaves, thereby accelerating the plant breeding process and shortening the breeding cycle. This invention has very high application value in plant breeding.

The invention relates to a macadamia nut flower and fruit retention synergistic method which comprises the following steps: in the early stage of flower bud differentiation, annularly applying slow-release granules to the root of a macadamia nut tree, and spraying fructan emulsion to the crown at the same time; in the early flowering period, a water dispersible sustained release preparation containing microencapsulated compound sodium nitrophenolate is sprayed to tree crowns of macadamia nuts, sodium alginate embedded borax sustained release microsphere suspension liquid is sprayed to leaf surfaces, and a hydrogel complexing agent containing sustained release monopotassium phosphate and amino acid is sprayed to the leaf surfaces; in the full-bloom stage, a composite slow-release emulsion containing liposome-embedded compound sodium nitrophenolate and brassinolide is sprayed to tree crowns of the macadamia nuts, slow-release gel microsphere suspension liquid of borax and amino acid is sprayed to leaf surfaces, and slow-release nano-emulsion containing beta-cyclodextrin-embedded bee wax volatile substances is sprayed to the tree crowns; in the initial fruit setting stage, sulfur-coated slow-release compound fertilizer is applied to the roots of macadamia nut trees, and ionic cross-linked calcium alginate microsphere embedded amino acid slow-release foliar fertilizer is sprayed to the leaf surfaces of the macadamia nut trees.

The invention relates to the technical field of fruit tree cultivation management, and particularly discloses an efficient flower thinning agent for peach trees and application thereof, and the flower thinning agent comprises the following main effective components: T6P with the concentration of 250-750 mg / L and ethephon with the concentration of 50-100 mg / L. According to peach trees treated by the flower thinning agent, the fruit setting rate is controlled between 20% and 25%, the weight of a single fruit reaches 190 g or above, the SSC content exceeds 12%, the fruit hardness is kept between 6.5 kg / cm < 3 > and 7.0 kg / cm < 3 >, and the fruit quality is remarkably improved. The formula is simple in components, low in cost and suitable for large-area popularization; the influence of environmental factors is small, and the stable flower thinning effect can be kept under different weather conditions.

The invention provides a method for reducing the dead fruit rate of macadamia nuts and preventing pericarp yellowing, which comprises the following steps: pruning fruit trees in the early stage of flower bud differentiation, spraying a composite insecticide in the early stage of flowering, and keeping the soil moisture content to be 60% or above. Spraying fruit retention liquid in a flower thinning and fruit retention period, using a root conditioning fertilizer and an insecticide in a flower falling and fruit setting period, spraying a leaf fertilizer and an insecticide in a fruit expanding period, and applying potassium sulfate in a final shell hardening and grease conversion period. By adding the anti-stiff fruit root slow-release fertilizer into the root conditioning fertilizer, it is guaranteed that fruit trees can continuously absorb mineral elements in high-temperature weather to reduce the stiff fruit rate, foliar fertilizer is sprayed to improve cell antioxidant enzyme activity and form a protective film, and the yellowing probability is reduced, so that the passing rate and peel yellowing of the fruit trees in the growth cycle are reduced, and the fruit quality is improved. The economic benefits of the macadamia nuts are greatly improved.

This invention belongs to the field of vegetable cultivation technology, specifically relating to a treatment method for enhancing the low-temperature resistance of tomato anthers and its application. The treatment method for enhancing the low-temperature resistance of tomato anthers includes the following steps: spraying with methyl jasmonate during the pre-opening stage of tomato flowers in a low-temperature environment; the low-temperature environment refers to an ambient temperature below 15℃. This treatment method can effectively alleviate the decline in pollen viability, reduced pollen tube germination rate, and adverse effects on fruit phenotype caused by low temperatures, thereby significantly mitigating the decrease in tomato fruit set rate caused by low-temperature injury.

The application discloses Zanthoxylum bungeanum miR167b The application belongs to the technical field of genetic engineering, and discloses a gene in the application of regulating plant growth and development miR167b The application constructs an expression vector of the gene, and makes the gene overexpress in tomatoes, and finds that miR167b The overexpression plant is dwarfed, the shape of the fruit is changed, the size and weight of the fruit are significantly lower than those of the wild type, the fruit setting rate is high, the fruit is seedless, the number of fruit chambers is reduced, ovule abortion occurs, and no embryo sac is formed in the interior. Further analysis finds that the indole butyric acid content in the fruit of the overexpression plant is increased, which indicates that miR167b The gene can regulate auxin to induce fruit apomixis, lays a foundation for revealing the apomixis mechanism of Zanthoxylum bungeanum, and provides gene resources and basis for improving the breeding strategy of woody plants, and has important theoretical value and application prospect.

This invention relates to a composition for improving cherry fruit set rate, and also to an application of this composition, belonging to the field of cherry cultivation technology. The composition for improving cherry fruit set rate of this invention comprises the following components in parts by weight: 40-70 parts gibberellic acid, 45-80 parts cytokinin, 5-15 parts auxin, 25-40 parts water-soluble fertilizer containing amino acids, 20-25 parts auxiliary materials, and 15,000 parts water. The composition of this invention not only provides external nutrition for cherry growth, but is also safe, stable, light in color, and does not contaminate the fruit surface. While ensuring fruit set rate, this invention also reduces physiological fruit drop, solves the problem of petal and calyx refusal, reduces the workload of fruit farmers, and simultaneously improves fruit size and quality.

The invention discloses an efficient cultivation and harvesting method for camellia oleifera, and belongs to the technical field of camellia oleifera cultivation. The method comprises the following technical steps: (1) land selection and preparation; (2) variety cultivation; (3) cultivation configuration; (4) planting; (5) tree body management; (6) nutrition regulation and control; (7) managing pollination insects; and (8) fallen seed collection and post-treatment. According to the efficient cultivation and harvesting method for the fragrant flower camellia oleifera, the pollination rate, the fruit setting rate and the oil content of camellia oleifera seeds can be effectively increased, the yield and the quality of the camellia oleifera are improved, efficient harvesting of the camellia oleifera seeds is achieved, the manual harvesting cost is reduced, and the economic benefits of camellia oleifera planting are improved.

The invention discloses a trellis-free crown shaping cultivation method for late-maturing Katt mango trees, and belongs to the technical field of plant cultivation. Aiming at the problems of low fruit setting rate, easiness in prematurity, low quality, low commodity rate and the like of the existing Katt mangoes, the invention provides the trellis-free crown shaping cultivation method for the late-maturing Katt mango trees, which comprises the following steps of: performing trellis-free crown shaping on the Katt mango trees in January to April of the fruit production year of the Katt mango trees without building any bracket or upright post in the whole process; the method comprises the following steps: winding lateral branches around a tree crown, forming an umbrella-shaped crown breadth with the diameter of 1.2-3.6 m by utilizing the toughness of the branches, controlling the plant spacing of the umbrella-shaped crown breadth to be 0.3-1.2 m and the row spacing of the umbrella-shaped crown breadth to be 0.5-1.8 m, pulling down the branches protruding out of the top of the umbrella-shaped crown breadth, and tying the branches on the umbrella-shaped crown breadth formed by the lateral branches. According to the method, the fruit setting rate, the yield and the quality of mangoes can be remarkably improved, the defects such as the incidence rate and the watermark spot defect rate of mangoes are reduced, the cultivation cost is reduced, and the operation efficiency is improved.

A new and distinct cultivar of Sambucus plant named ‘Æ-1’, characterized by reliable fruit set, low chill requirement, early and even ripening, short harvest period, and high-quality fruit characteristics. The plant is self-compatible, producing abundant, medium to medium-large fruit after self-pollination, with high concentrations of specific anthocyanins. Additionally, ‘Æ-1’ is particularly suitable for large-scale, commercial production centered in North-Central Florida.

The application discloses a light regulation method for promoting rapid propagation and generation multiplication of cherry tomatoes, and relates to the technical field of plant breeding. The method comprises the following steps: providing artificial light sources for the culture of growing cherry tomato plants to promote the growth of the cherry tomato plants, wherein the artificial light sources comprise 80-90% red light and 10-20% blue light in terms of light quality spectrum integral percentage. The application can be used for supplementing when the sunlight as the main light source is weak or can be used as a pure artificial light source for culture. The application can avoid the poor growth of cherry tomatoes caused by the uncertainty of the light intensity and effective light duration of sunlight, and through light regulation, the light environment parameters can be scientifically and accurately improved to regulate the rapid propagation and generation multiplication of cherry tomatoes, so that the cherry tomatoes have the advantages of thick stems and strong disease resistance in the seedling stage, the leaves are dark green, the seedling recovery period is short, the flowering and fruit setting period and the fruiting period are advanced, the stem height of the plants is increased, and the soluble solid content, yield and the like are significantly improved.

The application discloses a fertilizing method for felling and dwarfing Chinese fir, and belongs to the technical field of fertilizing of forest trees. The application adopts orthogonal test design, fixes nitrogen content, selects different concentrations of phosphorus and potassium two kinds of nutrient elements and gibberellin formula, discusses the influence of different proportions on seed yield and quality of felling and dwarfing Chinese fir with different fruit setting characteristics, and selects a more suitable formula, so that a scientific fertilizing scheme is provided for realizing high yield and stable yield of Chinese fir seed orchard.

This invention belongs to the technical field of agricultural microbiology, specifically relating to a strain of *Enterobacter holmieae* and its application in promoting plant growth. This invention provides a strain of *Enterobacter holmieae* IVF-WK118, with the preservation number CGMCC No. 28316. Applying an inoculum containing *Enterobacter holmieae* IVF-WK118 to plants promotes plant growth. Experiments show that compared to techniques without *Enterobacter holmieae* application, the technique provided by this invention increased cucumber yield by 8.6%, single fruit weight by 7.5%, and the number of fruits per acre by 1%. Therefore, the *Enterobacter holmieae* provided by this invention can be used to promote plant growth.

This invention belongs to the field of plant growth regulator technology, and relates to an inducer for improving female flower differentiation in *Xanthoceras sorbifolium*, its preparation method, and its application. The inducer, calculated per liter of aqueous solution, comprises 150-1200 mg of 6-benzyladenine, 10-50 mg of salicylic acid, 100-300 mg of choline chloride, 1.0-5.0 g of urea, 2.0-3.0 g of potassium dihydrogen phosphate, 0.5-2.0 g of boric acid, and 0.5-1.0 mL of emulsifier. This invention constructs a multi-component synergistic system for the directional regulation of flower bud sex differentiation, significantly increasing the number and proportion of female flowers in *Xanthoceras sorbifolium*, and reducing the flower bud abortion rate. Simultaneously, it improves the receptivity of the stigma of female flowers and the subsequent fruit setting rate, increasing yield per unit area, solving the industrial problem of "one fruit per thousand flowers" in *Xanthoceras sorbifolium*, and meeting the core needs of high-yield and high-efficiency cultivation and large-scale industrial development of *Xanthoceras sorbifolium*.

This invention provides a peach asexual fruit-setting agent and a method for peach asexual fruit setting, belonging to the field of fruit tree cultivation technology. The peach fruit-setting agent is composed of gibberellin GA. 4+7 This fruit-setting agent is formulated with chlorpyrifos, naphthaleneacetic acid, and water, with a mass ratio of 80-150:6-12:4-8. Spraying this agent onto the peach tree canopy during peak flowering enables asexual fruit setting. It is suitable for peach non-dormant off-season cultivation, open-field pollen-free peach varieties, and peach cultivation scenarios without natural insect pollination under greenhouse conditions. Through the scientific formulation and synergistic effect of these three plant growth regulators, it effectively solves the problem of low pollen viability and poor natural fruit setting rate caused by high temperatures during the flowering period in non-dormant peach cultivation, reducing the reliance on artificial pollination in conventional greenhouse peach cultivation and significantly lowering labor costs. Practical application has verified that this invention exhibits excellent fruit setting rate, is easy to operate, and has high safety, effectively improving the overall benefits of the peach planting industry and facilitating large-scale promotion and application.

This invention discloses a method for improving the fruit set rate of Hovenia dulcis, belonging to the field of agricultural production technology. Addressing the low fruit set rate caused by anther abortion, insufficient pollinating insects, and self-incompatibility, this invention comprehensively applies three synergistic measures: First, spraying a hormone solution of GA 35 μg / g and IAA 3 μg / g during the bud stage promotes pollen and style development; second, attracting native bees by planting motherwort and white clover, and leasing and introducing Italian bee colonies during peak flowering to enhance natural pollination; finally, preparing and spraying an artificial pollination solution containing specific concentrations of sucrose, boric acid, and calcium ions during the flowering period for assisted pollination. This method systematically solves the bottlenecks in each stage of pollination, increasing the fruit set rate of Hovenia dulcis from a natural 12.67% to a maximum of 71.24%, resulting in a significant yield increase and wide applicability to the development of the Hovenia dulcis industry.

The present invention provides a system (1000) for cultivating pepper plants (10), wherein the system (1000) includes a light generating device (100) and a control system (300), wherein the light generating device (100) is configured to provide device light (101) to the pepper plants (10), wherein the device light (101) includes one or more of red light and far-red light, wherein the red light includes one or more wavelengths in the range of 600-700 nm, and wherein the far-red light includes one or more wavelengths in the range of 700-800 nm, wherein the system (1000) has an operable mode, wherein the control system (300) is configured to acquire an input signal, wherein the input signal is related to plant load-related parameters of the pepper plants (10), wherein the plant load-related parameters are selected from those including plant load. The system (300) is configured to determine plant load based on an input signal, and wherein one or more of the following are applicable: (i) the system (300) is configured to compare the plant load with a lower plant load threshold, and if the plant load is lower than the lower plant load threshold, to select a target R:FR ratio of red light to far-red light from a range of >15; and (ii) the system (300) is configured to compare the plant load with a higher plant load threshold, and if the plant load is higher than the higher plant load threshold, to select a target R:FR ratio from a range of <15; the system (300) is configured to expose the pepper plant (10) to the target R:FR ratio by controlling the light generating device (100).

The invention provides a precise flower thinning and fruit retention method for torreya grandis female trees, and belongs to the technical field of economic forest cultivation. According to the method, by observing the relative positions of flowers and fruits of biennial bearing branches, it is found that series-parallel type competition is most intense, the fruit setting potential is lowest, series type competition is weakest, and the fruit setting potential is highest, and it is determined that the branches, judged to be in the series-parallel type, in the biennial bearing branches are preferentially thinned in the subsequent flower thinning treatment; micro nutrition competition difference existing due to different relative positions of flowers and fruits in the cross-year flower and fruit coexistence phenomenon is introduced into a decision basis; then, through a flower thinning treatment test on three-year-old bearing branches, it is clear that flower thinning treatment is conducted seven days before pollination, new leaves germinated by female flower buds are reserved during flower thinning treatment, the fruit setting rate can be effectively increased, refined operation is achieved, flower and fruit nutrition competition is effectively relieved, and the yield of flowers and fruits is increased. The precise flower and fruit thinning and protecting method based on the combination of flower and fruit position classification and leaf reserving and flower thinning is formed, the effect is stable, operation is easy, and the method is suitable for popularization.

The present invention discloses a cultivated fertile pepper plant or seed comprising a genetic region that confers high yield fruit setting. The invention specifically provides fertile pepper plants and seeds comprising a genetic region comprising QTL1 located at 9.0-13.5 Mbp on chromosome 1 and / or QTL2 located at 199-218 Mbp on chromosome 10, wherein said genetic region enables the production of parthenocarpic fruit, seedless fruit, and / or fruit with seeds. The invention further provides methods for producing such pepper plants, as well as methods for cultivating said plants to obtain high-yield fruit production. Additionally, the invention encompasses the use of such plants and seeds and genetic regions for commercial pepper production, and the development of pepper varieties with improved fruit set characteristics.

The present application belongs to the technical field of fruit tree cultivation, and particularly relates to a continuous trunk improved pear tree shape and a cultivation method thereof. Specifically, for the mature pear tree with open heart-shaped training, the vertical branch in the middle of the inner cavity of the tree body is selected as the stock after being short-cut and grafted with pollination branches to be the central trunk; the following year, the central trunk is short-cut in the middle in winter; in the third year, the central trunk plays the role of pollination in the flowering period and the inflorescences are removed after flowering; the main branches on the top of the central trunk are pulled to form a "tree on tree" shape; in the fourth year, the central trunk plays the role of pollination in the flowering period and the inflorescences are removed after flowering or the fruits are left after flowering, and the strong branches are removed; in the fourth winter, the main branches of the central trunk are removed to leave the weak and curved branches, and the side branches are removed to leave the strong and vigorous branches. The method can reduce the germination rate of the vertical overgrowth branches on the main branches of the original tree by more than 40%, significantly saving the nutrients of the tree body, increasing the average fruit setting rate of the inflorescences, and significantly improving the single fruit weight of the fruits due to the pollen collective effect, and increasing the orchard output value.

This invention discloses a composition for prolonging the flowering period of durian and a method for regulating the flowering period of durian. The composition includes: a first spray agent, consisting of the following components in the indicated weight ratios: 5-20g of cytokinin-like substances; 1-5g of gibberellin-like substances; 10-30g of polyamine-like substances; 5-15g of boron source; 100-300g of energy-regulating components; 1-5g of slow-release carrier and penetration-promoting components; and water to 1000g; and a second spray agent, consisting of the following components in the indicated weight ratios: 20-50g of flowering rhythm-regulating components, which are composed of 5-10g of paclobutrazol, 3-8g of uniconazole, and 0.5-2g of chlorpyrifos; 2-5g of slow-release carrier and penetration-promoting components; and water to 1000g. This invention, through the combined design of the first spray agent (flowering promoter) and the second spray agent (flowering control), transforms the initiation of durian flower buds from a "single trigger" to a "controllable, phased trigger," thereby prolonging the flowering period while maintaining or even improving fruit-setting capacity.

The invention discloses an agricultural plant growth regulator composition and application thereof, the effective components of the agricultural plant growth regulator composition comprise allantoin and 5-aminolevulinic acid, the mass ratio of the allantoin to the 5-aminolevulinic acid is 1: 80-80: 1, and the mass ratio of the allantoin to the 5-aminolevulinic acid is preferably 1: 3-3: 1. The plant growth regulator composition provided by the invention has an excellent synergistic effect, the two components are matched, the growth and development of root systems are enhanced, the photosynthesis is promoted, the fruit setting rate and the fruit weight are increased, meanwhile, the mature period is shortened, fruits appear on the market as soon as possible, higher price can be obtained, higher benefits can be obtained with lower cost, and the plant growth regulator composition is safe to crops.

The application discloses a peach tree aphid control method and belongs to the technical field of peach tree aphid control. The specific control method is as follows: (1) during the dormancy period of the peach tree, the bark of the peach tree is cleaned, and the branches and leaves with insect eggs are cleaned; before budding, a stone sulfur mixture is sprayed on the branch bud axilla, the bark crack and the soil surface under the tree; (2) during the flower bud period of the peach tree, an aphid killer is sprayed once during the red flower bud period; 6-7 days after the flower withering, a honeydew removing agent and an aphid killer are sprayed once; (3) during the growth period of the peach, 30-35 days after fruit setting, a honeydew removing agent and an aphid killer are sprayed once; (4) during the early dormancy period, a yellow plate coated with a sticky insect glue is hung on the sunny side of the peach tree.

The invention provides an artificial supplementary pollination cultivation technology for improving the fruit setting rate of apples, and relates to the technical field of artificial supplementary pollination. The artificial supplementary pollination cultivation technology for improving the fruit setting rate of the apples specifically comprises the following steps of S1, pollen preparation and activation treatment, S2, pollination opportunity determination, S3, graded collaborative pollination operation and S4, matched management after pollination. By defining a canopy boundary standard and combining directional powder spraying tool improvement and space-time isolation operation, pollen settlement interference of middle-upper layer powder spraying on lower layer point pollination is avoided, the pollination amount of each canopy is accurate and controllable, the pollen utilization rate is increased to 90% or above, the fruit setting rate is increased by 20%-25% compared with that of a traditional technology, the malformed fruit rate is reduced by 15%-18%, the fruit setting stability is remarkably optimized, and the method is suitable for large-scale popularization and application. In addition, pollen waste is reduced by accurately adjusting parameters of the pollen sprayer, tool switching and operation procedures are simplified, efficiency is improved, material consumption is reduced by the aid of a reusable shielding net, and the efficient and economic pollination requirements of large-scale orchards are met.

The invention provides a system (1000) for cultivating a pepper plant (10), wherein the system (1000) comprises a light generating device (100) and a control system (300), wherein the light generating device (100) is configured to provide device light (101) to the pepper plant (10), wherein the device light (101) comprises one or more of red light and far red light, wherein the red light comprises one or more wavelengths in the range of 600 – 700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700 – 800 nm wherein the system (1000) has an operational mode wherein: the control system (300) is configured to acquire an input signal, wherein the input signal relates to a plant load-related parameter of the pepper plant (10), wherein the plant load-related parameter is selected from the group comprising a plant load, a flowering rate, a flower abortion rate, a fruit set rate, and a fruit abortion rate; the control system (300) is configured to determine a plant load based on the input signal, and wherein one or more of the following applies: (i) the control system (300) is configured to compare the plant load to a lower plant load threshold, and to select a target R:FR ratio of red light to far red light from the range of > 15 if the plant load is lower than the lower plant load threshold; and (ii) the control system (300) is configured to compare the plant load to a higher plant load threshold, and to select the target R:FR ratio from the range of < 15 if the plant load is higher than the higher plant load threshold; the control system (300) is configured to expose the pepper plant (10) to the target R:FR ratio by controlling the light generating device (100).

The invention provides a flower and fruit management method for reducing the postharvest shattering rate of seedless white grapes, and belongs to the technical field of agricultural planting. The invention provides a flower and fruit management method for reducing the postharvest shattering rate of seedless white grapes, which comprises the following steps: in the grape inflorescence separation period, treating inflorescence by using a GA3 aqueous solution, and treating the whole grape plant by using a Vitacat aqueous solution after 3-5 days; and when the grapes bear fruits and fruit grains grow to be as large as mung beans, treating clusters by using a compound aqueous solution of GA3 and Vitacat. When the method is adopted for flower and fruit management, the weight, the soluble solid content and the fruit hardness of the seedless white grapes are not obviously influenced, but the fruit shape index, the fruit brush length and the adhesive force between fruit grains and fruit stems can be effectively improved, and the post-harvest seed shattering rate is obviously reduced.

The present application relates to the field of plant growth regulator technology, and in particular, to a phenylurea compound, a method for preparing same, and use thereof, and a composition for promoting crop cell division and a method for using same. The phenylurea compound provided herein has cytokinin-like biological activity and can effectively promote the germination of crop seeds and the expansion of cotyledons, increase the chlorophyll content, and retain and enlarge the fruits, featuring a stable action effect, safety to crops, and the like. Experimental results show that the phenylurea compound of the present application can effectively promote the germination of rice and peanut seeds, expansion of radish and cucumber cotyledons, leaf pigment retention and yield increase of peanuts, fruit set and retention of zucchini, and enlargement and sweetness enhancement of grape fruits, etc., exhibiting cytokinin-like effects.