59 results about "Root distribution" patented technology

The invention discloses an irrigation control method and system based on crop root zone soil moisture and root distribution. The method comprises the steps that parameters are set, soil water content in each soil layer of a root zone is monitored, root zone weighted average soil water content is computed according to relative root length density distribution, a crop water stress index (CWSI) is computed, when the CWSI computed value is larger than a preset CWSI critical value, irrigation is started; theoretical irrigation amount can also be computed according to planned moisture layer soil water content, and when practical irrigation amount reaches the theoretical irrigation amount, irrigation is stopped. According to the irrigation control method and system, the water stress degree of crops can be accurately and conveniently estimated, the fact that the root zone soil moisture distribution conditions and the crop moisture conditions are considered during irrigation is controlled according to the water stress degree, and an effective tool is provided for realizing of the purposes of water saving and production increasing.

The invention discloses an irrigation control method and system for saline-alkali soil. The irrigation control method includes the following steps that parameters are set, soil water content of all soil layers of a root zone is monitored, root zone weighting average soil water content and root zone weighting average soil water percolation are calculated based on relative root length density distribution, and CWSI is calculated; when a CWSI calculation value is larger than a preset CWSI critical value, irrigation is started; the theoretical irrigation amount is calculated according to soil water content distribution in a planned moisture layer. When the practical irrigation amount reaches the theoretical irrigation amount, irrigation is stopped. According to the irrigation control method and system for saline-alkali soil, influences on transpiration and growth of crops by soil water content, salinity and root distribution are comprehensively considered, the water stress degree of the crops on the saline-alkali soil are estimated more accurately and more conveniently and an effective tool is provided for achieving the purposes of saving agricultural water and boosting the yield of the saline-alkali soil.

The invention discloses a system and a method for carrying out layered constant-pressure filtration irrigation according to root distribution of plants, and belongs to the field of agricultural water-saving irrigation and automatic control. According to the invention, influence of humidity nonuniformity of surface layer soil and deep layer soil on plant growth is considered, and infiltration irrigation tubes are embedded at proper depths of the surface layer soil and the deep layer soil so as to establish a spatial distribution filtration irrigation system. Soil critical drought humidity values at the surface layer soil and the deep layer soil are used as set values, and soil humidities at the surface layer soil and the deep layer soil are compared with the set values so as to control opening of a water pump and electromagnetic valves. A soil moisture change condition at a specific position is used as an opportunity of closing the electromagnetic valves, and constant-pressure control is carried out by controlling a rotating speed of the water pump, thereby achieving automatic and accurate control on irrigation. According to the system and the method disclosed by the invention, a fertilizer which is necessary for plants is added into water, is directly conveyed to plant roots by the infiltration irrigation tubes, and is directly adsorbed by the plants, so that pollution of the fertilizer to the environment and the underground water is effectively avoided, and the utilization rate and water saving percentage of the fertilizer are greatly improved.

The invention discloses a high-yield cultivation method for plums. The method includes the steps of 1. selection and preparation of land, wherein deep, loose and fertile soil with good drainage is selected; 2. seedling selection, wherein high-quality saplings of pure varieties, having strong roots and full sprouts and being free of pest and disease damage, are selected; 3. plantation, wherein the saplings are planted in planting pits, and then watered and covered with soil, and 100-120 saplings are planted per mu; 4. nutrient and water management, wherein young trees of 1-2 years are fertilized once a month from sprouting to seven months, base fertilizer is applied once from nine months to ten months, and full-grown trees of over three years are fertilized three times a year; 5. pruning, wherein the natural open centre shape is adopted for pruning in the pruning modes of extending pruning and shoot thinning; 6. field management, wherein pit enlarging, deep tillage, and turning over of green manure are conducted every autumn, and root distribution is improved in a deepened mode. The high-yield cultivation method is more suitable for plum growth, lays a solid foundation for later growth of plums, and increases yield. Plums are good in quality and wonderful in taste, and economic benefit is improved.

The invention discloses a method for determining the firmness degree of a pine tree by detection equipment. The measuring equipment consists of a radar, a soil compaction determinator and a control instrument, and the radar and the soil compaction determinator are connected to the control instrument. According to the method, the control instrument sends an instruction of discriminating the stability of the pine tree to a detection device, the radar in the measuring equipment detects the pine tree root distribution width, the vertical root depth, the pine tree height and the diameter of the pine tree trunk, the soil compaction determinator measures the soil compaction degree, the radar and the soil compaction determinator transmit the measured data to the control instrument, the control instrument is internally provided with operation control program for discriminating the pine tree safety performance, receives data, performs data analysis and processing, and outputs the determination result to a display screen of the controller. By determining the stability of the pine tree, tipping of the pine tree can be effectively prevented, also personal safety and property of people can be protected without loss, and accidents can be avoided.

The invention discloses a method for measuring the stability performance of a locust tree through a measuring device. The measuring device comprises radar, a soil compactness measuring instrument and a control instrument. The radar and the soil compactness measuring instrument are connected with the control instrument. According to the method, the control instrument sends an instruction for judging the stability performance of the locust tree to a detection device, the radar in the measuring device detects the breadth of root distribution of the locust tree, the vertical depth of the root, the height of the locust tree and the diameter of a trunk of the locust tree, the soil compactness measuring instrument measures the soil compactness, measured data is transmitted to the control instrument through the radar and the soil compactness measuring instrument, an operating control program for judging the safety performance of the locust tree is arranged in the control instrument, the data is received, analyzed and processed, and a measurement result is output and displayed on a display screen of the control instrument. The stability of the locust tree is measured, the locust tree is effectively prevented from tipping, personal safety and property of people can be protected, and accidents can be avoided.

The invention relates to the technical field of a forest water-saving irrigation method, and relates to a forest well type water-saving irrigation method which is performed according to the following steps: (1) measuring and checking the soil condition of the woodland requiring irrigation and determining the size of required porous silo pipes; (2) forming at least two holes matched with the porous silo pipes on the ground surface of root distribution region at the periphery of each forest; and (3) installing the porous silo pipes in the holes formed in the step (2). According to the invention, the conventional forest surface irrigation method is changed, water is directly irrigated to the underground forest root distribution regions by a conventional trickle irrigation system and the lateral leakage of the porous silo pipes, the ground surface is kept in a drier or dry state, and the capillary pipes of the soil in the irrigation humid region and the soil on the ground surface are in a breaking state, so that the surface evaporation after irrigation is greatly prevented and reduced, the water is effectively supplied for the forest root system, and the water utilization efficiency is improved to achieve a water-saving purpose.

The invention discloses a method for irrigating winter wheat according to root distribution. According to the method, a stereoscopic irrigating system is established in a wheat field and used for irrigating the winter wheat according to the growing time and the root depth of the winter wheat and the relative humidity of the soil at the root depth in a layering mode; layering irrigation includes surface-layer irrigation, intermediate-layer irrigation and deep-layer irrigation. Layering irrigation is conducted according to the growing time and the root depth of the winter wheat and the relative humidity of the soil at the root depth, the requirement of crops for water during the growing period can be met, non-available water and harmful water are not likely to be produced, and the utilization rate of the water is increased.

The invention provides a cut-flower chrysanthemum morifolium seedling breeding and cultivating method. The cut-flower chrysanthemum morifolium seedling breeding and cultivating method includes steps of root cutting, breeding, planting and growth management, and is characterized in that during root cutting, adopting a scion stem long in 10cm, disposing the entire scion stem in the following rooting liquids including distilled water+0.4-0.6mg / L of IBA (indole butyric acid)+0.4-0.6mg / L of NAA (naphthalene acetic acid)+3-4ml / L of azoxystrobin+2-3ml / L of gold ridomil, and cutting after soaking for 10-15 minutes. The scion stem which is long is easy to root, root distribution is uniform and strong, bacteria carried with the stem are effectively killed, cuttage diseases are reduced, death rate at the seedling stage is decreased, cut-flower quality is kept constant, the time from cuttage seedling planting to cut-flower harvesting lasts 70 days, and five batches of the cut-flower chrysanthemum morifolium can be continuously produced in a year. Besides, rot of the seedlings is reduced, death rate is decreased to 2-3%, and plants are strong and healthy, so that yield of the cut-flower is increased to 75-90%.

The invention relates to a water saving anti-blocking precise irrigation device and the connecting piece of the irrigation device, belonging to the technical field of agriculture, comprising a plurality of delivery pipe branches, an above-ground connecting pipe fitting, a connecting piece of the pipe fitting and a capillary, an above-ground to underground capillary, an under ground connecting pipe fitting and a porous seeping head. The invention is characterized in that, the adjacent two pipe branches are connected with each other through the above-ground connecting pipe fitting to form the enclosed delivery pipe branch path; one end of the connecting piece of the pipe fitting and the capillary is seal-jointed with the above-ground connecting pipe fitting, and the other end is connected with the above-ground to underground capillary; the under ground connecting pipe fitting has spherical structure; the terminal of the under ground connecting pipe is connected with the above-ground to underground capillary; the various pipe branches of the under ground connecting pipe fitting are connected with the porous seeping head. The irrigation device and the connecting piece have the advantages that, the spacing and the position of the seeping head can be adjusted randomly according to crop distance and root distribution; precise irrigation is performed to the root section of plants; the anti-blocking structural design and the arrangement of a filtering device can effectively prevent the blocking of penetrant holes, and long term irrigation is realized.

The invention relates to a multi-branch water-supply water-saving irrigation method which separates the plants having same root distribution, ecologic water-need character and drought-enduring degree in a branch irrigation area into one group and uses a same branch to supply water to each group. In this way, different irrigation periods and irrigation quantities are set up differently according to the ecologic water-need character of different plants in one branch irrigation area. In the condition of building multi-tree mixing plants in lines in a protection forest which has bigger difference in water need among various trees, the method provided by the invention is utilized to supply water according to different water-need characters of plants in a branch irrigation area, in order to rich the plant species of protection forest, increase the biological diversity, promote water-saving efficiency, manage conveniently, decrease maintenance cost, widen the use range of plants, and save water.

An electrophotographic toner is prepared by using a binder resin having an acid value of 5 to 15 mgKOH / g, a salicylic metal complex, a colorant, and a releasing agent. In the preparation determination for the third root distribution of a light emission voltage by helium atmospheric pressure microwave induction plasmas for carbon atoms derived from the binder resin and metal atoms derived from the salicylic metal complex is made based on a value measured by a micro-particle measuring apparatus including a normal pressure or atmospheric pressure space, a capillary tube inserted at one end in the space, a microwave source, a cavity, a quartz tubular reactor, a discharge means, an analyses means, and a signal detection portion. The absolute deviation showing the scattering of approximate straight lines approximated by a least squares method is controlled to be 0.08 or less.

The invention relates to the technical field of planting, and particularly relates to a method for fertilizing pepper. According to the method, the fertilizing position for 1-2 aged pepper is 30-40cm from the pre-column direction; the fertilizing position for 3-5 aged pepper is 50-70cm from the pre-column direction and 10-20cm from the post-column direction, and the fertilizing application ratio is 7:3; the fertilizing position for 6-15 aged pepper is 60-80cm from the pre-column direction and 20-30cm from the post-column direction, and the fertilizing application ratio is 7:3; and the fertilizing position for over 15 aged pepper is 40-50cm from the pre-column direction and 20-30cm from the post-column direction, and the fertilizing application ratio is 4:6. According to the method, a water and fertilizer integrated technology is combined, the fertilizing position and ratio are reasonably set, the fertilizing region and the pepper root distribution region are overlapped, the space coupling of water fertilizer and the root system is realized, the water fertilizer utilization efficiency is improved, pepper growth is promoted, and pepper yield is improved.

The present invention relates to city greening, and is the hole drilling ventilation method for restoring a improving physiological function of avenue tree root system. Holes are drilled in the area with dense root distribution under tree crown, and 4-8 holes in 30-150 cm depth and 130-200 cm interval are drilled. The holes may be vertical or 45 deg inclined towards the area with dense root distribution, and are filled with stuffing with physical and chemical characteristics suitable for the soil. The said method can improve the ventilation and increase water content in soil and this is favorable to health growth of tree root system.

The invention discloses an irrigation control method and system based on crop root zone soil moisture and root distribution. The method comprises the steps that parameters are set, soil water content in each soil layer of a root zone is monitored, root zone weighted average soil water content is computed according to relative root length density distribution, a crop water stress index (CWSI) is computed, when the CWSI computed value is larger than a preset CWSI critical value, irrigation is started; theoretical irrigation amount can also be computed according to planned moisture layer soil water content, and when practical irrigation amount reaches the theoretical irrigation amount, irrigation is stopped. According to the irrigation control method and system, the water stress degree of crops can be accurately and conveniently estimated, the fact that the root zone soil moisture distribution conditions and the crop moisture conditions are considered during irrigation is controlled according to the water stress degree, and an effective tool is provided for realizing of the purposes of water saving and production increasing.

The invention provides a planting method for increasing yield of Illicium verum based on soil nutrient balance. Regionalization is performed according to tree species planting areas and soil types, asoil sample is collected to investigate the content of soil available nutrients, soil bulk density and root distribution, and the supply amount of the soil available nutrients including nitrogen, phosphorus and potassium is determined through the following formula. According to the fertilizer, biomass of organs such as roots, trunks, branches, leaves, flowers and fruits of Illicium verum trees andcontent of nitrogen, phosphorus and potassium in each organ are analyzed precisely by sampling according to nutrition absorption and utilization characteristics of the Illicium verum trees and a forest all-tree nutrition method for soil, so that absorption and accumulation absolute values and relative proportion of macroelements such as nitrogen, phosphorus and potassium in the threes are calculated scientifically, accordingly, the scientific proportion of macroelements (N, P and K) of nutrient fertilizer for fertilization of the Illicium verum is calculated, and the yield is increased by 25%or higher on average.

The invention discloses a sweet photo seedling planting machine based on a secondary precise shaping special-shaped ridge and belongs to the technical field of sweet photo seedling planting. The sweetphoto seedling planting machine comprises dozer blades, photo seedling conveying mechanisms and soil-covering plates which are all arranged in pairs on both sides of a ridge on a rack are arranged along the traction direction, a ridging device is arranged in front of the dozer blades, a seedling pressing mechanism is arranged between falling ends of the potato seedling conveying mechanisms and the soil-covering plates, an irrigation belt laying mechanism and a mulching-film covering mechanism formed by mulching-film rolls, film pressing rollers and mulching-film soil pushing plates are arranged in the rear of the soil-covering plates, and a seedling cutting mechanism is arranged in the rear of the mulching-film soil pushing plates; meanwhile, planting operation is carried out on both sides of the ridge, ridging, trenching, seedling falling, shaping, soil covering, drip irrigation belt laying, mulching-film covering and seedling cutting are completed on one machine, the planting operation is simplified, time and manpower are saved, and the seedling pressing mechanism can carry on secondary shaping to the ridge and can accurately locate the shape, root distribution and stem and leaf distribution of seedlings; the seedling cutting mechanism is provided with pressing wheels to avoid bringing out the entire seedlings, and the waste of manpower and material resources is reduced.

The invention discloses a double-tube drop-irrigation cotton partition plate pot which comprises a plastic pot (1), an embedded drop-irrigation dropper (5), an embedded drop-irrigation capillary tube (4), a trapezoidal notch (7), a plastic partition plate (6), a capillary tube hole (3), soil (8), sandstone (9) and a sand filtering net (10), wherein the plastic partition plate (6) is a vertical thin plate penetrating through the upper side and the lower side of the plastic pot (1), and exerts an effect of separating water and a fertilizer on the two sides of the plastic partition plate (6); the trapezoidal notch (7) is dug at a vertical and equally-divided position of the plastic partition plate (6); the sand filtering net (10), the 3-5cm sandstone (9) and the 30cm soil (8) are sequentially placed at the bottom of the plastic pot (1); cotton seedlings grow in the soil; and the water and the fertilizer are dropped into the soil to allow the cotton seedlings to grow and develop. With the adoption of the double-tube drop-irrigation cotton partition plate pot, drop-irrigation tubes can be directly used for conducting pot plant irrigation tests; root division alternation irrigation can be conducted by the double drop-irrigation tubes; and a root distribution characteristic of the root division alternation irrigation is uncovered.

The invention relates to a device for paddy field saline-alkali soil vertical sampling. The device is composed of a cylinder barrel, a barrel cover, a metal pendant, soil taking holes, rubber plugs and a short rod soil auger, and is characterized by simple structure, and low material cost. During use, the sampling barrel is inlaid in a paddy field, and in the barrel, sampling by the short soil auger is simple and convenient. The sampling barrel can be placed in the field for continuous use for a long time, and the sampling error can be reduced. The invention can also be applied in paddy field growing season and wetland soil sampling. Specifically, the invention can be used for analysis of paddy field or wetland vertical gradient of saline ion migration, nutrient distribution rule, root distribution and microorganism distribution and the like of soil sample collection. The device provided in the invention has the advantages of simple structure, low cost, convenient installation, small sampling error, easy mastery by operators, and wide application range, etc., and has a promotion value.

The invention discloses a simplified water-saving cultivation method based on a northern China winter wheat-summer corn rotation planting system. The method mainly aims at the northern China underground water funnel region, according to the characteristics of non-uniform seasonal distribution of annual rainfall and different root distribution and water absorption depths of two crops, one-time irrigation water storage and one-time fertilization before wheat sowing, one-time irrigation moisture supplementation after summer corn sowing and one-time fertilization are provided, the annual irrigation amount is about 100 cubic meters, the annual yield per mu reaches 1000 kg (per ton of grain field), compared with an existing mode that wheat is watered twice in spring, the annual grain yield is equivalent, the irrigation amount is reduced by about 100 cubic meters, the nitrogen application amount is reduced by 20-25%, mining of groundwater every year is greatly reduced, and the shortage of water resources can be relieved; and meanwhile, along with reduction of irrigation and fertilization, labor force, electric power and other related investments are greatly reduced, and cost saving, consumption reducing and efficiency increasing are remarkable.

The invention provides a water-culture potting bucket for analyzing the influence of temperature increase on the distribution state of wheat roots. A multi-layer and porous interlayer stainless steelplate for positioning the growth of the wheat roots is arranged at the bottom of each layer of a wheat potting bucket with the opened upper part, a slicer is arranged in an inner layer of the interlayer stainless steel plate, and a culture water body on each layer can be blocked after the wheat roots are cut off; a controllable faucet is further communicated to the bottom of each layer of the potting bucket and can be used for collecting root exudates; and a visual tank body is used for cultivating a gel matrix and is provided with (longitudinal and transverse) gel culture observation rules for measuring the space distribution of the wheat roots in situ. Disc-shaped waterway reflux heating pipe units are arranged on the peripheral side walls of each layer of the potting bucket. By arranging the wheat potting bucket, the water-culture temperature of a growth environment of to-be-tested plants can be accurately controlled, the root exudates on the different layers can be collected, and in-situ observation of the root distribution can be realized; and the accuracy of test data is increased, and the intensive space and the convenient and rapid operation can be realized.

The invention discloses a human-induced restoration method for degraded Nitraria sphaerocarpa sand heaps of desert-oasis ecotones. The method comprises following steps: stumping treatment, soil crustdestroy treatment and supplementing application of chemical fertilizer. According to the method, degraded Nitraria sphaerocarpa is subjected to the stumping treatment firstly, older branches and weakbranches are removed to stimulate germination of latent buds at the root of the Nitraria sphaerocarpa, the soil crust destroy treatment is executed below Nitraria sphaerocarpa bushwood, water is promoted to permeate into layers of root distribution, and then supplementing application of the chemical fertilizer is performed. After human-induced restoration method for the degraded Nitraria sphaerocarpa, activation of the Nitraria sphaerocarpa sand heaps are effectively suppressed, the Nitraria sphaerocarpa sand heaps are fixed again, and the method plays an important role of preventing desertization of oasis peripherals and protecting oasis.

The invention belongs to a vegetable production facility in the field of agricultural planting, and particularly relates to an underground plant for planting mushrooms. The underground plant comprises a vertical shaft, wherein the vertical shaft is arranged in the ground; the wall of the vertical shaft is provided with a reticular wall-protecting pipe; a mushroom fungus rod protective basket is suspended in the vertical shaft, and the mushroom fungus rod protective basket is integrally in a frame structure and comprises a vertical protective basket main frame; the vertical protective basket main frame comprises an upper main disc ring and a lower main disc ring; a plurality of support bars distributed around the upper main disc ring and the lower main disc ring are welded between the upper main disc ring and the lower main disc ring; a plurality of partition boards are distributed on support bars between the upper main disc ring and the lower main disc ring; and the periphery of each partition board is provided with an orientation disc through a connecting rib. According to the invention, when the mushrooms are planted, columnar mushroom fungus rods are placed on the partition boards one by one, and then the mushroom fungus rod protective basket is suspended in the vertical shaft. The underground vertical shaft provides good oxygen condition, temperature condition, humidity condition, and the like for mushroom strains on the mushroom fungus rods, so as to ensure that the mushrooms are in a good growing environment and healthily grow in the vertical shaft. The underground plant for planting mushrooms is not limited by any condition and achieves the effect of one-time investment and permanent production.

The present invention relates to a construction method of a sunflower dynamic root system distribution model considering multiple salt and nitrogen levels. The construction method comprises the following steps: observing root system down-growing depth of sunflowers in a growing period under a variety of different salt and nitrogen application levels, and establishing a function of a relationship between the maximum root system depth along time changes under the variety of the salt and nitrogen levels; obtaining measured values of root length density of water-absorbing fine roots of the sunflowers under the variety of the salt and nitrogen levels and establishing a function relationship between root length density distribution of the water-absorbing fine roots of the sunflowers in differentgrowth stages under the variety of the salt and nitrogen levels; and fitting parameters q, p and z<*> in the function of the previous step, then establishing a quantitative relationship between the shape parameters q, p and z<*> and the different salt and nitrogen levels, obtaining the function relationship of the shape parameters q, p and z<*> along with the time changes under the different saltand nitrogen levels, and finally obtaining a dynamic root system distribution function. The dynamic root system distribution function can accurately simulate dynamic root system distribution of actual sunflower growth.

The invention relates to the technical field of water-saving irrigation of forests, in particular to a pit-type water-saving irrigation method of forests. The pit-type water-saving irrigation method of forests includes the steps of firstly, measuring and checking soil condition of a forest land to be irrigated, and determining size and depth of each pit; secondly, digging at least two pits on the land surface in a root distribution area around each tree; and thirdly, arranging a drop irrigation system on the forest land to be irrigated. Land flooding irrigation, furrow irrigation, spray irrigation and drop irrigation methods in the conventional forestry are changed, underground forest root distribution area is directly irrigated with the water under the action of infiltration of the water pits, no surface runoffs occur, the land surface is still kept dry, irrigated soil humid region and surface soil capillaries are broken, and accordingly post-irrigation surface evaporation is stopped and reduced greatly, the water can be supplied to forest roots effectively, and great increase in water utilization rate and water conservation is achieved.

The invention relates to a method for promoting the spring growth of grapes by using a skirt membrane. The method comprises the following steps: after the grape tree is dormant, before the bleeding period, or when the daily average temperature is larger than or equal to 10 DEG C, namely, the effective activity temperature of the grapes is at the lower limit, the trunk of the grape is three-dimensionally covered by a plastic film and the skirt membrane is arranged, and a triangle is formed between the skirt membrane and the root distribution area of the grapes, and the concentrated distributionarea of the grape root systems in each planting row covers the triangular space range. The skirt membrane of the grape base tree body and the root distribution area form a triangle, the temperature can be quickly increased, so that the problem that the growth rate of the underground part of the plant and the growth rate of the overground part of the plant is solved. The method has the advantagesthat the operation is simple, the growth of the grape in spring can be remarkably promoted, and the timely transportation of the moisture and the nutrients by the root system can be promoted, reducingproduction caused by trunk drainage is reduced, the germination uniformity and the fruit setting rate are increased, and economic benefits are improved.

Provided is a high-yield water-saving cultivation method for drip irrigation under a plastic film of peanuts. The high-yield water-saving cultivation method is characterized by comprising following steps: pre-sowing preparation, variety selection, sowing, pipe-laying and mulching operation, dry-seeding and wet-leaching, water control in a seedling stage, supplement of water fertilizers middle and later periods of fertility, field management and the like. The high-yield water-saving cultivation method for drip irrigation under the plastic film of peanuts has following beneficial effects: by adoption of water-saving irrigation technology featuring combination of mulched cultivation and drip irrigation, local irrigation is performed according to root distribution of crops; a soil aggregate structure is effectively maintained in order to prevent deep percolation of moisture and ground soil erosion; technical features such as heat preservation, preservation of soil moisture, decrease in soil surface evaporation and increase in utilization rate of moisture are obtained so that periodic droughts are effectively prevented from continuously happening in recent years during the peanut growth season and therefore growth of peanuts is not affected; and high-yield potential of peanuts is given into full play so that yield of peanuts is increased.

The invention relates to the technical field of tree irrigation, and discloses an irrigation device. The irrigation device comprises an arc-shaped flow-out tree ring; the flow-out tree ring comprisestwo sections of flow-out small pipes; one end of each of the two sections of flow-out small pipes is connected with a field lateral pipe through first connecting pieces at the same time; the flow-outtree ring is uniformly provided with a plurality of water outlets; and the other ends of the two sections of flow-out small pipes are separated from each other. According to the irrigation device provided by the invention, the flow-out tree ring is arranged as a tail-end flow-out pipe, and the size of the flow-out tree ring and the quantity of the water outlets can be adjusted according to characteristics of species, tree age, root distribution and the like of crops. Water can be directly conveyed to water demand positions of root systems of the crops but not conveyed to root parts of the crops as in a conventional irrigation method, so that open flows on the ground surface can be prevented, and water evaporation can be reduced. The irrigation device is simple in structure, the manufacturing and installation are simple and are easy to operate, the utilization rate of irrigation water can be effectively improved, and the water irrigation time in each time and the labor investment can besaved.