36 results about "Single fertilization" patented technology

The invention relates to a fertilizing method in flue-cured tobacco production, and belongs to the technical field of flue-cured tobacco fertilization. In the method, before a flue-cured tobacco sprout is cultured, the total quantity of a fertilizer is determined by measuring earthwork according to the required height of a field ditch, and 95 percent of the fertilizer serving as a base fertilizer based on the total quantity of the fertilizer is fertilized into the field ditch twice; and after the flue-cured tobacco sprout is cultured, the fertilizer in an amount which accounts for 5 percent of the total quantity of the fertilizer is fertilized in the field ditch, which is 10 to 15cm deviated from the center of the sprout. The method comprises the specific steps of: a, performing single fertilization on the upper side of the field ditch by using 57 percent of the fertilizer serving as a first base fertilizer based on the total quantity of the fertilizer which is determined by measuring the earthwork according to the required height of the field ditch; b, after fertilizing the field ditch by using the first base fertilizer, clearing the field ditch to 25cm on the upper side of the field ditch, and performing single fertilization on the upper side of the field ditch by using 38 percent of the fertilizer serving as a second base fertilizer based on the total quantity of the fertilizer; and c, covering 5 to 8cm soil on the surface which is fertilized by the second base fertilizer, controlling the height of the field ditch to be 40cm, and allowing two layers of fertilizers to be arranged vertically in the center of a ridge. The method has the advantages of uniform fertilization, long time for fertility, fast maturity of a tobacco plant, and capability of effectively preventing the fertilizer deficiency and reducing the labor intensity.

The invention relates to an intelligent variable rate fertilization adjustment device and a control method. The intelligent variable rate fertilization adjustment device includes a frame traction device, a deep loosening soil preparation device, a variable rate fertilization device and a variable rate fertilization control device. The deep loosening soil preparation device includes a rotary tilling device and a deep loosening device. The variable rate fertilization device includes a single fertilization device, a fertilizer discharge pipe, a fertilizer box and an electrical control box. The variable rate fertilization control device includes an embedded industrial personal computer, a single chip microcomputer, an opening degree adjustment stepped motor driver, a speed adjustment stepper motor driver, an opening degree sensor, a speed sensor and a soil nitrogen content sensor. Variable adjustment in the fertilization process can be realized according to the nitrogen content of soil, and precision fertilization for each position of a plot can be realized. Moreover, the intelligent variable rate fertilization adjustment device has the advantages of simple structure, reasonable designand easy popularization, the problem of fertilizer application in the process of crop fertilization can be fully solved, fertilizers can be effectively utilized, and environmental pollution and wasteof fertilizers can be avoided.

The invention relates to the field of crop selection and crop breeding, particularly to selection methods for breeding colony varieties of crops involving self-pollination and normal cross-pollination. Selection methods include crossing male parents with female parents to obtain crop populations, wherein the female parents are individual plants in a segregation population or self-crossed descendants of early segregation generations, said segregation population obtained by hybridizing pairs of parental plants with different desired characteristics to produce population F1, and then hybridizing pairs of F1 one more time. The male parents are homozygous breeding lines, varieties, F1, heterozygous plants in the segregation generations or individual plants produced in the same manner as for the female group. Crop populations and colony varieties of crops display characteristics of consistency, stability, specificity, disease resistance, high yield, and high adaptability while permitting farmers to reserve seeds properly and companies to exploit pedigreed seed on a large scale.

A fertilizing device for cherry trees, comprising a horizontally arranged annular pipe, a fertilizing pipe vertically connected to the lower part of the annular pipe, the fertilizing pipe is arranged along the circumference of the annular pipe and has a closed bottom, and the fertilizing pipe is arranged along the side wall of the fertilizing pipe. Fertilization holes are evenly distributed in the length direction, and the annular tube includes a first arc tube and a second arc tube connected to each other, the diameter of the first arc tube is smaller than that of the second arc tube, and the port of the second arc tube A sleeve is fixed, and the inner diameter of the sleeve matches the outer diameter of the first arc-shaped pipe, and a fertilizer inlet pipe is connected to the upper part of the first arc-shaped pipe. In the present invention, the annular pipe is set as a detachable and combined first arc-shaped pipe and a second arc-shaped pipe, and a fertilization pipe is arranged along the circumference of the annular pipe, so that the roots of cherry trees can be fertilized accurately, and the fertilization is uniform, which promotes The root system grows well, which solves the problems of single fertilization position and uneven fertilization of the existing cherry tree fertilization device.

The invention provides a slow-release quantitative fertilization device which comprises a bag body and a fertilizer, wherein the bag body comprises a top bottom in contact with the ground and an opposite top surface; the bag body is made of a non-woven material. By virtue of the non-woven material, a fertilizer can be gradually released in the use process; above all, due to the biodegradable characteristic of non-woven, the ability of releasing the fertilizer is gradually strengthened along with growth of a plant; the slow-release quantitative fertilization device is suitable for nutrient supply for a crop in a later period, the fertilizer can be continuously supplied within relatively long time (the time is set to be consistent with that of growth of the crop in general), slow-release quantification is achieved and the condition that seedlings are burnt due to a sudden increase of the fertilizer in traditional single fertilization is avoided. In addition, loss of the fertilizer which is not absorbed is caused by single massive fertilization.

The invention discloses a moisture soil soil-rice single fertilization technology which includes the steps of rice seedling bed preparation, formulated fertilizer preparation, side deep fertilizer applicator adjustment, rice seedling transplanting and fertilization and field management. Preferably, a monitoring and shooting step adopts a plurality of monitoring cameras, and the rice seedling bed preparation includes the steps of plowing and stubbling, shallow rotary tillage and land flattening and watering. Compared with the prior art, the technology has the advantages that zinc fertilizers and silicon fertilizers needed by rice growth are added, requirements of rice for medium trace elements can be met, the used fertilizers are slowly released and can be prolonged to a fertilizer needingcritical period of rice growth to be released, nutrient absorption of rice can be facilitated, a lot of loss of the fertilizers can be avoided, so that influence of the fertilizers on ecological environments is low, single fertilization is implemented by machinery, and the fertilizers are applied onto root areas of rice seedlings in a concentrated manner, so that labor cost is saved while the utilization rate of the fertilizers is higher.

The invention discloses a high-calcium-content secondary element water-soluble fertilizer and a preparation method thereof. The full-water-soluble suspension calcium fertilizer is prepared from the following raw materials in parts by weight: 1.0-3.0 parts of EDTA, 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous cupric sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001 to 0.005 part of sodium molybdate, 0.5 to 3.0 parts of potassium hydroxide, 3 to 8 parts of urea, 7 to 10 parts of magnesium chloride, 3 to 6 parts of calcium formate, 50 to 65 parts of calcium ammonium nitrate, 0.1 to 0.4 part of ferrous chloride, 3 to 6 parts of a stabilizing agent, 0.02 to 0.06 part of a surfactant, 4.0 to 8.0 parts of a thickening agent and 10 to 12 parts of water. According to the invention, through process control on feeding sequence, reaction conditions and the like, and selection of additives such as a thickening agent, a stabilizing agent and the like, extremely high content of calcium and trace elements can stably exist in a liquid phase at the same time, and simultaneous supplement of extremely high content of calcium and trace elements can be realized.Other nutrient elements are considered while calcium is highlighted, and the problem of antagonism among elements caused by single fertilization is effectively prevented.

The invention discloses a device for saving fertilizer for irrigation. The device comprises an outer shell, four first shafts are rotatably installed in the lower end face of the outer shell, and rollers are fixedly installed on the first shafts; a fertilizer box is arranged in the outer shell, an opening of the fertilizer box faces upwards, a fertilizer additive box is arranged on the right sideof the fertilizer box, and an opening of the fertilizer additive box faces upwards; and a stirring cavity is formed in the lower portion of the fertilizer box, and a stirring assembly is arranged in the stirring cavity. According to the device, single fertilization is achieved when the device is used for fertilizing crops, and therefore fertilizer is saved; and meanwhile, when liquid fertilizer ispoured, the liquid fertilizer is stirred and poured at the same time, thereby ensuring the fluidity of the fertilizer, and the fertilizer can be better absorbed by plants.

The invention discloses tobacco complete-nutrition integrated base-topdressing fertilizer, comprising the effective components, including, by weight, 20-30% of active biological bacterial fertilizer, 2-5% of medium-trace element fertilizer, and 65-75% of an inorganic fertilizer, wherein the active biological bacterial fertilizer is made from, by weight, 50-60% of rapeseed meal, 20-30% of soybean meal, 5-10% of sesame seed meal, 5-10% of peanut meal and 1-2% of EM (effective microorganism) composite bacterial agent by means of full fertilization and decomposition through trough-type mechanical aeration fermentation. The tobacco complete-nutrition integrated base-topdressing fertilizer replaces conventional base fertilizer, special topdressing, potassium sulfate and other fertilizers; nutrients of the various fertilizers are retained; by adding the slow-release fertilizer ingredient into the tobacco complete-nutrition integrated base-topdressing fertilizer, the growth need of tobacco during growth can be met just through single fertilization, fertilization labor and cost are reduced, the input-output ratio is increased, and the income of tobacco farmers is increased.

The invention discloses a seedling breeding method of a dangshen mulching film suitably used an arid mountainous area. The seedling breeding method comprises following steps of: preparing soil, applying fertilizers and using pesticides; finishing seedbeds; uniformly sowing; covering with a plastic film; performing field management; and lifting seedlings and harvesting. The seedling breeding method of the dangshen mulching film suitably used in the arid mountainous area has following beneficial effects: by integrating anti-drought measures such as temperature increase and soil moisture conservation, moisture perseveration and increase, rain collection, seepage storage and runoff interception with pest control, single fertilization is adopted for control over underground insects and soil-borne diseases; the manner of firstly finishing seedbeds, sowing and then covering with the plastic film is adopted and the plastic film mulching is utilized for replacing straw mulching of conventional crops so that the problem that film-mulching cultivation technique can be not applied to seedlings growing of dangshen in the arid mountainous area is solved; per unit yield of seedlings growing of dangshen in the arid mountainous area is significantly increased; the seedling breeding method of the dangshen mulching film suitable in the arid mountainous area is especially suitable for seedlings growing in dry land of arid and semiarid rain fed agricultural regions; the seedling breeding method is anti-drought, low in cost and investment, high in output, easy in application, convenient in promotion and popularization and capable of preserving complete seedlings and cultivating robust seedlings and is easy and practicable and helps to save labor; and a great application prospect and economic benefits are obtained.

The invention belongs to the field of human reproductive health, and relates to reproductive protective agent facilitating human fertilization. The reproductive protective agent is divided into three independent formulas, and is used sequentially before, during and after having sex. The three formulas of the reproductive protective agent have different functions, can not only protect the integrity of vaginal mucosa of women, reduce the friction resistance and the mechanical damage to the male genitalia and the female reproductive tract caused by friction when being used together, but also can significantly increase the number of the left female reproductive tract local sperms, prolong the survival time of the sperms, enhance the movement activity of the sperms and protect the activity of the sperms so that the sperms are not killed by various local reproductive tract harmful factors, so as to achieve the purpose of improving the success rate of single fertilization.

The invention discloses an organic fertilizer used for Chinese medical stone powder watermelon muskmelon and a preparation method thereof. The organic fertilizer comprises the following raw materialsin parts by weight: 25-40 parts of plant straw, 25-30 parts of animal dung, 10-25 parts of Chinese medical stone, 10-15 parts of traditional Chinese medicine residue, 8-12 parts of potassium ore, 3-6parts of biological species, 2-5% of auxin, and 1-2% of a starter. The preparation method comprises the following steps: S1) raw material preparation and processing; S2) mixed fermentation; S3) pelletizing; S4) cooling screening; S5) package for warehousing. The fertilizer can provide a lot of nutrients for plant growth, promotes the watermelon growth, can satisfy the macronutrients for rape growth, increases the rapeseed output, and improves the soil structure, topdressing is not required for single fertilization, the fertilizer efficiency is obvious and persistent, the insect pest rate is reduced, the preparation technology is simple, the operation is easy, the cost is low, and the fertilizer is suitable for batch production.

The invention discloses a light and simple cultivation method for open ground direct seeding of short-season cotton in coastal saline soil. According to the method, high-quality short-season cotton varieties are adopted, and a novel cultivation manner is established by adopting the following measures: watering and building soil moisture, mechanically driving soil to build a seedbed, precise seeding on an open ground, combining a quick-acting fertilizer and a slow release fertilizer for single fertilization, performing chemical top sealing, harvesting cotton in a concentration manner and so on, therefore, on the bases of reducing salt damage and ensuring normal emergence of cotton seedlings and yield formation, the materialization and labor input can be effectively reduced, the pollution caused by pesticides and plastic film residues is reduced, and the comprehensive benefits of cotton planting are improved.

The invention discloses a fertilization position and transport position changeover mechanism for a paddy field fertilization device and belongs to agricultural machinery. An upper sleeve and a lower sleeve are respectively fixedly arranged on the upper part and the lower part of a guide sleeve; a telescopic pipe sleeved by a pressure spring is inserted into the lower sleeve; a positioning pin is inserted into a lower chute in the lower sleeve; the inner end of the positioning pin is connected with the telescopic pipe; a fertilization boot is assembled on the lower end part of the telescopic pipe; a rotary round tube with short and long boss teeth is inserted into the guide sleeve; a boss-type sleeve is inserted into the upper sleeve; an adjusting hand lever is inserted into an upper chute in the upper sleeve; the inner end of the adjusting hand lever is connected with the boss-type sleeve; a sleeve liner is fixedly arranged on the upper part of the upper sleeve. According to the mechanism, changeover and adjustment of the fertilization position and transport position of a single fertilization device is realized, the adaptive capacity of paddy field operating machines and tools assembled with the fertilization device on different fertilization operating requirements is improved, and the mechanism has the characteristics of novel and reasonable structural design, simplicity and convenience in adjustment and operation and reliability in application.

The invention relates to dedicated wheat fertilizer with the characteristic of disposable fertilization, the problems of fertilizer for wheat planting that second pollution cannot be prevented, and the cost is expensive can be effectively solved. The dedicated wheat fertilizer is characterized by being prepared from the following raw materials in percentage by weight: 13 to 25 percent of urea, 16to 39 percent of ammonium chloride, 18 to 22 percent of monoammonium phosphate, 8 to 10 percent of potassium chloride and 18 to 30 percent of clay mineral granule controlled release agent. The dedicated wheat fertilizer is prepared through the following steps: mixing the urea, ammonium chloride and the clay mineral controlled release agent together, thus preparing a material A; mixing potassium chloride with the material A, thus preparing a material B; uniformly mixing monoammonium phosphate with the material B, thus preparing granules; drying and sieving the granules, and enabling the granules of which the granularity is 3.35 to 5.6 mm to be up to 90 percent or above, thus obtaining a finished product. The dedicated wheat fertilizer disclosed by the invention has the characteristic of realizing one-season fertilizer supplying through single fertilization, not only can good nutrient elements be provided for wheat, but also the demands on nitrogen fertilizer during a whole growth periodof the wheat can be met, raw materials are rich, the preparation method is simple, the cost is low, a using effect is good, the dedicated wheat fertilizer can be effectively used for planting the wheat, and high yield and good harvest are ensured.

The invention discloses a spring organic fertilizer for carnation and a preparation method thereof. The organic fertilizer comprises the following components in parts by mass: 3 to 5 parts of chloroisobromine cyanuric acid, 6 to 8 parts of potassium carbonate, 20 to 40 parts of a derris stem leaf dry powder, 1 to 3 parts of humic acid, 7 to 9 parts of chicken manure, 30 to 40 parts of cow and sheep manure, and 250 to 350 parts of water. The spring organic fertilizer cannot cause soil hardening, does not need topdressing after single fertilization, and can effectively improve a soil structure.

A special slow-released fertilizer for cotton comprises the following raw materials in parts by weight: 15-25 parts of urea, 6-8 parts of a nitrogenous fertilizer, 6-8 parts of phosphatic fertilizer, 3-5 parts of cortex meliae powder, 4-6 parts of decoction dreg ashes, 7-9 parts of potassic fertilizer, 5-7 parts of plant ash, 3-5 parts of sepiolite, 2-4 parts of monoammonium phosphate, 5-15 parts of quick lime, 4-6 parts of copper sulfate and 20-30 parts of water. According to the special slow-released fertilizer for the cotton, provided by the invention, various nutritional ingredients can be slowly released, nutrient loss is avoided, single fertilization without topdressing is achieved, environmental pollution is avoided, and the cotton yield is further increased.

The invention relates to the field of fertilizers, and especially relates to a fertilizer for Cercis chinensis. The organic fertilizer comprises the following components in parts by weight: 20-25 parts of straw, 10-20 parts of sawdust, 10-12 pats of expanded perlite powder, 1-2 parts of a nitrification inhibitor DMPP, 0.3-0.5 parts of tea saponin, 100-120 parts of cow dung, 30-50 parts of bupleurum roots, 20-40 parts of common aucklandia roots, 40-60 parts of diatomite, 15-17 parts of flavescent sophora roots, 30-50 parts of pine needles, 18-20 parts of isatis roots, 8-10 parts of Chinese prickly ash powder, 12-14 parts of peanut cakes, 14-16 parts of monoammonium phosphate, 10-12 parts of calcium powder, and 150-170 parts of water. The special-purpose fertilizer does not pollute environment, nutrients are adequate, single fertilization is carried out without topdressing, and soil structure is effectively improved.

The invention relates to the technical field of agricultural planting, in particular to a konjac double row strip planting and secondary ridge cultivation method. Konjac double-row row planting method for secondary ridge cultivation, comprising the following steps: A, site selection; B, soil disinfection; C, seed selection; D, planting taro disinfection; E, sowing; F, fertilization; G, cultivating soil moisture ; H, weeding; I, mulching; J, control of plant diseases and insect pests; K, excavation of konjac ball diameter. The invention has high seedling emergence rate, high fertilizer utilization rate, one-time fertilization, good drainage effect, good ventilation and light transmission, low disease occurrence rate, less labor input, high expansion rate of commodity taro bulbs, time-saving and labor-saving planting, and time-saving and excavation. Can be harvested mechanically.

The invention discloses a quantitative alternate mixing fertilization machine, which comprises a fuselage and two stockers. The upper end of the fuselage is provided with an alternate fertilization mechanism for alternately distributing two kinds of fertilizers, and the lower end of the fuselage is provided with A mixing chamber, the mixing chamber is provided with a fertilizer mixing mechanism for mixing two kinds of fertilizers, and the lower side of the mixing chamber is provided with a quantitative fertilization mechanism for quantitatively distributing the mixed fertilizer. The device has a simple structure and is easy to operate. During the fertilization process, two kinds of fertilizers can be applied alternately, so as to complete the application of two different fertilizers between crops, and the two kinds of fertilizers can also be mixed according to needs, and quantitative fertilization can be realized in the process of single fertilization and mixed fertilization , to ensure the accuracy of fertilizer application.

The invention discloses a seedling breeding method of a dangshen mulching film suitably used an arid mountainous area. The seedling breeding method comprises following steps of: preparing soil, applying fertilizers and using pesticides; finishing seedbeds; uniformly sowing; covering with a plastic film; performing field management; and lifting seedlings and harvesting. The seedling breeding method of the dangshen mulching film suitably used in the arid mountainous area has following beneficial effects: by integrating anti-drought measures such as temperature increase and soil moisture conservation, moisture perseveration and increase, rain collection, seepage storage and runoff interception with pest control, single fertilization is adopted for control over underground insects and soil-borne diseases; the manner of firstly finishing seedbeds, sowing and then covering with the plastic film is adopted and the plastic film mulching is utilized for replacing straw mulching of conventional crops so that the problem that film-mulching cultivation technique can be not applied to seedlings growing of dangshen in the arid mountainous area is solved; per unit yield of seedlings growing of dangshen in the arid mountainous area is significantly increased; the seedling breeding method of the dangshen mulching film suitable in the arid mountainous area is especially suitable for seedlings growing in dry land of arid and semiarid rain fed agricultural regions; the seedling breeding method is anti-drought, low in cost and investment, high in output, easy in application, convenient in promotion and popularization and capable of preserving complete seedlings and cultivating robust seedlings and is easy and practicable and helps to save labor; and a great application prospect and economic benefits are obtained.

The invention discloses a spring organic fertilizer for cymbidium goeringii and a preparation method thereof. The spring organic fertilizer comprises the following components in parts by mass: 12 to 14 parts of rice hull powder, 10 to 15 parts of urea, 20 to 25 parts of calcium superphosphate, 10 to 12 parts of weathered coal, 23 to 25 parts of straw, and 200 to 300 parts of water. The spring organic fertilizer for cymbidium goeringii cannot cause soil hardening, does not need topdressing after single fertilization, and can effectively improve the soil structure.

The invention discloses intelligent fertilization equipment based on Internet of Things. The intelligent fertilization equipment comprises a fixing frame, a plurality of supporting legs are evenly arranged at the bottom of the fixing frame, idler wheels are arranged on the supporting legs, a pushing handle is arranged on the fixing frame, a chemical fertilizer bin is arranged on the fixing frame,a discharging opening is formed in the bottom of the chemical fertilizer bin, and a fertilizer storage pipe is arranged at the bottom of the chemical fertilizer bin; and the fertilizer storage pipe isprovided with a discharge device and a regulation and control device, and the fertilizer storage pipe is provided with a landfill device used for landfill of chemical fertilizer on soil near seedlings. The volume of the fertilizer storage pipe is controlled through the regulation and control device, so that the single fertilization amount is automatically controlled; the regulated chemical fertilizer amount can be discharged through the discharge device; and through the landfill device, the discharged chemical fertilizer can be buried in land near the seedlings, the distance between the chemical fertilizer burying position and the seedlings can be adjusted according to actual needs, so that the seedlings can be automatically fertilized, the chemical fertilizer can be automatically buried,manpower is saved, the fertilization efficiency is improved, and the chemical fertilizer can be prevented from being directly scattered on the ground.

The invention discloses spring organic fertilizer for Papaver rhoeas and a preparation method of the spring organic fertilizer. The spring organic fertilizer is prepared from components in parts by mass as follows: 12-14 parts of straw, 10-15 parts of polyacrylamide, 13-15 parts of urea, 10-12 parts of strain powder, 15-30 parts of rice hull powder, 20-25 parts of coal gangue and 250-350 parts ofwater. With adoption of the spring organic fertilizer for Papaver rhoeas, soil hardening is prevented, single fertilization is performed without topdressing, and soil structure can be effectively improved.

The invention relates to the field of agricultural fertilizer, and in particular to a composite fertilizer for wheat plantation. Aiming at the fertilizer demand characteristics of wheat, the status quo of the wheat plantation fertilizer in our country, and harm of single fertilizer administration, the invention provides a composite fertilizer for wheat plantation. The composite fertilizer enhances soil fertility, improves soil structure, reduces pesticide residues, and overcomes the harm on soil and crop of single fertilization. The technical scheme is as below: a composite fertilizer for wheat plantation is prepared from the following components by weight: 30-40 parts of lignite, 30-40 parts of urea, 20-25 parts of monoammonium phosphate, 10-15 parts of potassium chloride and 3-5 parts of Bacillus subtilis. The preparation method is by mixing the above ingredients, crushing, mixing, granulating, drying, screening and packing. Compared with the simple substance fertilizer, the provided by the invention has complete fertilizer nutrients, small amount of sub-component and good physical and chemical properties, and is conducive to the realization of scientific fertilization.

The invention discloses an intelligent fertilization device based on the Internet of Things, which includes a fixed frame, a plurality of supporting legs are uniformly arranged at the bottom of the fixed frame, rollers are arranged on the supporting legs, and a push handle is arranged on the fixed frame, so that The fixed frame is provided with a fertilizer bin, the bottom of the fertilizer bin is provided with a discharge port, and the bottom of the fertilizer bin is provided with a fertilizer storage pipe, and the fertilizer storage pipe is provided with a discharge device and a control device, and the fertilizer storage pipe There is a landfill device for burying chemical fertilizers on the land near the seedlings. The capacity of the fertilizer storage pipe is controlled through the regulating device, so as to automatically control the amount of single fertilization. The adjusted amount of fertilizer can be discharged through the discharge device. Through the landfill device, the discharged chemical fertilizer can be buried on the land near the seedlings, and the distance between the seedlings can also be adjusted according to actual needs, so that the seedlings can be fertilized automatically, and the chemical fertilizer can be automatically landfilled, saving manpower, improve the efficiency of fertilization, and avoid the direct spreading of chemical fertilizers on the ground.

The invention discloses a fertilization position and transport position changeover mechanism for a paddy field fertilization device and belongs to agricultural machinery. An upper sleeve and a lower sleeve are respectively fixedly arranged on the upper part and the lower part of a guide sleeve; a telescopic pipe sleeved by a pressure spring is inserted into the lower sleeve; a positioning pin is inserted into a lower chute in the lower sleeve; the inner end of the positioning pin is connected with the telescopic pipe; a fertilization boot is assembled on the lower end part of the telescopic pipe; a rotary round tube with short and long boss teeth is inserted into the guide sleeve; a boss-type sleeve is inserted into the upper sleeve; an adjusting hand lever is inserted into an upper chute in the upper sleeve; the inner end of the adjusting hand lever is connected with the boss-type sleeve; a sleeve liner is fixedly arranged on the upper part of the upper sleeve. According to the mechanism, changeover and adjustment of the fertilization position and transport position of a single fertilization device is realized, the adaptive capacity of paddy field operating machines and tools assembled with the fertilization device on different fertilization operating requirements is improved, and the mechanism has the characteristics of novel and reasonable structural design, simplicity and convenience in adjustment and operation and reliability in application.