51 results about "Steppe" patented technology

The invention discloses a MODIS data self-detection method of grassland fire hazard land, which comprises the following steps: MODIS data receiving step from satellite, fire hazard land index GEMI-B construction step, fire point detection step, point sequence step, comparison step. If the comparison result doesn't approximate the statistic feature value, the data removes from the seed point sequence; if approximates, the data spreads outsides at the center of land pixel and adds the pixel into the seed sequence, which is removed from the seed point sequence. If the seed point quantity is not zero, the operation returns to the comparison step; if zero, the operation precedes the land image output step.

The invention relates to a method for defining the degradation degree of a high-cold steppe. The method comprises the following steps of: (1) selecting a defining range; (2) determining various indexes of the degradation level of the high-cold steppe; (3) randomly selecting dozens of communities from the high-cold steppe and determining plant community dominant species in the high-cold steppe; (4) determining the coverage of graminaceous plants in each plant community dominant specie and initially classifying according to the indexes in the step (2); (5) determining the aboveground biomass relative scale of the plant community dominant species in each community and the aboveground biomass relative scale of edible grass and classifying once again according to the indexes in the step (2); (6) measuring the organic matter content distribution range of a surface soil sample of each community; and (7) comparing and verifying the organic matter content distribution range obtained in the step (6) with the organic matter content distribution range in the step (2) and finishing defining when the accuracy is over 90 percent. The method disclosed by the invention is simple, quick and accurate and ensures that the rehabilitation and protection of a degraded high-cold steppe are specific and scientific.

The invention discloses a pasture growing method for use in a desert region, and belongs to the technical field of desertification control. The method comprises the steps of land preparation, sowing and fertilization, and is suitable for a saline-alkaline desert region of which the altitude is 1,800-2,200 meters. After pretreatment of a selected land, different types of sowing and fertilization are performed gradually, and wind prevention, sand fixation and desert greening can be performed periodically, so that the ecological system of the desert region is improved effectively, stable transition of the desert region to a steppe region is realized, development of the planting industry and animal husbandry is promoted, the land resource utilization ratio can be increased, and the economical benefit of peasants is increased.

The invention discloses a TTC- dehydrogenase activity testing method of drinking water, it relates to a environment monitoring method, especially a monitoring method to test biology activity for drinking water treatment. Nowadays, the method of testing biology activity of sewage biology treatment, because the solvent is vaporized, it is easily to break the stopper and overflow, so it leads to unstable result, so the biochemical analysis technology is limited to use in actual application. The method includes the following operation steppes: a. sample collecting and preparing, b. sample concentration, c. sample culturing, d. finishing enzyme reaction, e. color imetric analysis. The invention solves the biology activity testing problem under testing measure and low matrix concentration conditions, its result is stable, and has very high application value, it is propitious to be popularized and applied.

A plastic pipe inkjet printer belongs to the field of light industry printing. The plastic pipe inkjet printer is composed of a bottom plate, a controller, a motor bracket, a stepper motor, an ink barrel, a micro pump, an ink conveying pipe, vertical plates, a shaft, a bearing, a turntable, a CCD, a cartridge circuit board, a cartridge, adjusting plates, adjusting screws, a cartridge bracket, and a small gear. The plastic pipe inkjet printer is characterized in that the bottom plate is disposed at the bottom of the whole equipment; the vertical plates, the motor bracket, the controller and the ink barrel are mounted on the bottom plate; the stepper motor is mounted on the motor bracket; the small gear is mounted on the steppe motor and is in meshed transmission with the toothed arc of the turntable; the shaft is mounted on a bracket formed by the two vertical plates and is equipped with the bearing, and the outer surface of the bearing contacts the toothed arc of the turntable; the cartridge, the cartridge circuit board, the adjusting plates and the CCD are mounted on the cartridge bracket; the adjusting plates are mounted on the turntable through the adjusting screws; the micro pump is mounted on the ink barrel; and the ink conveying pipe is mounted between the micro pump and the cartridge. By adopting the inkjet printer, the inkjet printing position of a plastic pipe can be automatically tracked and adjusted.

The invention relates to a method for cultivating red sand seedling in container, comprising following steps: (1) choosing container; (2) preparing nutrient soil; (3) sowing in container; (4) covering for protection; (5) cultivation managing. The invention speeds up the artificial restoring process for desert and desert steppe, greatly shortens natural restore and restoring period, and possesses great ecological and social benefit.

The invention relates to a method for measuring the sulfur content of steppe plant. The method comprises the specific processes of a, collecting a steppe plant sample; b, treating the sample: b1, cleaning, b2, drying, b3, grinding and b4, smashing; c, measuring the sulfur content of the plant: performing measurement by an acidic wet digestion-barium sulfate turbidimetry, putting the plant sample under the action of a catalyst and an oxidant to oxidize organic sulfur until all sulfurs in the plant are converted into sulfates, then adding a quantitative amount of acid and a turbidity agent to generate barium sulfate suspension, and performing turbidimetry measurement at the wavelength of 440nm; and d, analyzing according to a sulfur content measurement result of the plant. According to the method for measuring the sulfur content of the steppe plant, the sulfur content of the whole plants in dominant species / subdominant species can be measured.

The invention relates to the field of grassland construction, and provides a steppe area derelict land vegetation maintenance method and a steppe area ecological restoration method. The maintenance method includes the steps: performing background survey on a derelict land; surveying the vegetation type of an unbroken section and building an indigenous plant bank; determining vegetation restorationapplications; turning over the land; applying basic fertilizers before tillage or in the tillage process; laying irrigation pipelines at the bottom of the derelict land; building fences on the periphery of the derelict land; selecting vegetation seeds from the indigenous plant bank and sowing the vegetation seeds on the derelict land; covering the seeds with soil and compacting the soil; loosening the soil of a hardened ground after sowing; applying mixed fertilizers to the derelict land after seedling emergence; irrigating the derelict land by the irrigation pipelines. According to the maintenance method, a damaged steppe ecosystem can be restored, and ecosystem functions are restored. The steppe area ecological restoration method includes the steppe area derelict land vegetation maintenance method.

The invention discloses a microclimate monitoring system and a method for monitoring native grass based on the system, and relates to the field of automatic monitoring of the steppe ecology and the animal husbandry weather. The system comprises a data monitoring server, a pasture growth vigor monitoring subsystem, a meteorological element monitoring subsystem, a soil temperature and humidity monitoring subsystem, a wireless communication device and a data collecting device. The data monitoring server is in wireless connection with the data collecting device through the wireless communication device, and the data collecting device is in wired connection with the pasture growth vigor monitoring subsystem, the meteorological element monitoring subsystem and the soil temperature and humidity monitoring subsystem. The microclimate monitoring system and the method solve the problems that according to an existing manual steppe ecology meteorological observation method, the distance between an observation point and a station is large, observation is not convenient, work, time and labor are wasted, and meanwhile due to the great subjectivity of manual observation, the ecology observation data error is large, and the frequency of the observation data is low.

The invention discloses a planting method for ecological restoration type liquorice. The method comprises the processes of seed treatment, sowing, transplanting, fertilization and irrigation, insect pest prevention and digging. In the seed treatment process, seeds of Ningxia liquorice and Ural liquorice are collected; in the sowing process, the seeds are shallowly sown in July every year; in the transplanting process, rhizobium leguminosarum, fresh beneficial microbial population animal nature fertilizer in rumens of cattle and sheep and stains used as beneficial bacteria in the forage grass manufacturing ensilage process are transferred to the roots of liquorice seedlings; in the fertilization and irrigation process, organic farmyard manure is applied, and irrigation is performed five times every year; in the insect pest prevention process, a biological method is adopted for preventing insect pests; in the digging process, when basically-mature liquorice which grows for 3-5 years and reaches the medicinal commercial grade is dug, more than 80% of production stock plants are reserved, and at most 20% of medicinal commercial grade liquorice can be dug. By means of the method, management of the ecological environment and recovery of steppe ecology are achieved, sustainable development of liquorice land is ensured, maximization of economic and ecological benefits is achieved, and the planting method can be widely applied and popularized.

The invention discloses a method for regulating the flowering period of limonium bicolor. The method includes the steps that 1, limonium bicolor seeds are sown on 5-15 May, and limonium bicolor plants grow under natural conditions; 2, overwintering water is supplied on 5-15 October, and low-temperature inducing treatment is carried out; 3, the limonium bicolor plants are transferred into a room from the outside, and gradual temperature raising lasting 6 days is carried out; 4, the temperature is controlled to be 20-25 DEG C, photoperiod regulation lasting three weeks is carried out, the continuous illumination time of every day is controlled to gradually become 12 h from 10 h, and the limonium bicolor plants bolt; 5, the temperature is controlled to be 22-25 DEG C, four-gradient photoperiod regulation lasting five weeks is carried out, the continuous illumination time of every day is controlled to gradually become 15-16 h from 12-13 h, and the limonium bicolor plants flower. According to the method, limonium bicolor flowers in the current year instead of flowering in two years, the production efficiency of flower products is improved, and the flowering period is regulated to be around the Spring Festival. By means of the method, the steppe ecology and the biological diversity are protected, and the living environment of urban residents is beautified.

The present invention discloses a method for ecologically breeding Hu sheep in desert steppe areas. Technical scheme main points are as follows: severe desert areas, moderate desert areas and mild desert areas are divided for breeding, liquorice and sea-buckthorn are planted in the severe desert areas, liquorice is planted in the moderate desert areas, forages are planted in the mild desert areas,straw forage bundles mixed with sea buckthorn seeds are regularly fed in the severe desert areas, feeds containing straw powder are regularly fed in the moderate desert areas, the Hu sheep flocks aregrazed alternately in the severe desert areas, moderate desert areas and mild desert areas, grazing alternation time is 2 days, 6 days and 11 days respectively, forage feeding cycle in the severe desert areas is 38 days once, and forage feeding cycle in the moderate desert areas is 19 days once. Advantages are as follows: the method can improve feeding and breeding efficiency, product output andutilization rate of the feeds and other resources; the method can gradually improve ecological environment, expands breeding scale, increases economic income, maintains a good ecological and food chain balance, and promotes sustainable development of Hu sheep breeding industry in the desert steppe areas while breeding the Hu sheep.

The invention relates to a desertification steppe family ranch Nitraria inter-sand pile lowland after-culture method comprising the following steps: 1, selecting seeds, placing the seeds in a seedbedfor germination; 2, seedling, seedling on the germinated north china Ceratoides latens seed sand soil; 3, soil preparation: digging planting pits in to-be-cultured Nitraria inter-sand pile lowland, curing a cast pipe nearby each line of planting pits, setting cast holes connected with each planting pit in the line on the cast pipe, setting a water injection pipe with one end connected with the cast pipe, wherein the other end of the water injection pipe extends outside the sand ground surface and is connected with a water storage box on the ground on top of the Nitraria sand pile; 4, transplanting; 5, field management. The method cultures the seedlings before transplanting, thus ensuring the seedling survival rate after the cultivation; the cast pipe connected with the planting pits is arranged so as to realize underground cast, thus preventing water resource wastes in a surface spraying mode.

The invention provides a special base fertilizer-natural ore fertilizer for the saline alkali lands, and the special base fertilizer-natural ore fertilizer is a special fertilizer for improving the saline alkali lands. In recent years, the salinization degree of the soil keeps rising, and the area of saline alkali lands has being expanded and increased at an annual speed of 1.5 percent. The situation brings difficulties to the production and living of people as well as the regional economic development. The special base fertilizer-natural ore fertilizer for the saline alkali lands changes the soil character and activates the land capability factors. Aiming at the five major factors for the development of the saline alkali lands, potash feldspar ore, the phosphate ore, the silicate ore and the organic rock are adopted to produce the special base fertilizer-natural ore fertilizer for the saline alkali lands. The unique crystal structure in the ore changes the situation of saline alkali soil, and the ion exchange lowers the PH value of the soil. The molecule pore preserves water and prevents drought, thereby increasing the soil nutrient. 5 particles of the powder in A bag are fertilized 30 centimeters deep in soil by the 9SF-2.45 type rat channel steppe scarification fertilizer distributor, with 8 tons of fertilizer for each hectare; and the scrap in the B bag is ploughed under 10 to 15 centimeters deep underground by a tractor-propelled five-furrow plough, with 8 to 30 tons of fertilizer for each hectare.

The invention relates to a household herdsman livestock-grassland configuration technology. The technology takes grazing capacity, digestible protein grazing capacity and metabolic energy grazing capacity of a seasonal pasture as a target function, the economic benefit and the ecological benefit are taken as the biggest target, according to the Liebig (Liebig) minimum factor law, in different seasons, the minimum grazing capacity of grassland is taken as a limit factor, and the maximum grazing capacity of the grassland is taken as theory grazing capacity of an adjustment scheme; according to the quantity of livestock grazed actually and the grassland utilization modes in different seasons, the quantity of livestock of a herdsman is suitably increased and reduced, a plurality of sets of parameters are set from natural grazing to the balance between forage and livestock in the mode of combining drylot feeding with grazing, each set of parameters are combined with the target function to form a scheme, a scheme set is composed of a plurality of schemes, the optimum solution set is obtained through calculation, and the scheme which is most beneficial for regional development is selected. The technology plays a positive role in adjusting steppe ecology and provides necessary support for the development of animal husbandry.

The invention belongs to the technical field of livestock and particularly relates to a sliding feeder for supplementary feeding of livestock farmed on cold upland steppes. The sliding feeder comprises an elongated box; the upper end of a first rotary rod is rotationally connected with a first conveying barrel; the lower end of the first rotary rod is passed through a discharge hopper and extendedout and is coaxially fixedly connected with a first bevel gear; the first rotary rod is sleeved with a first spiral vane; a roller screen is horizontally arranged below a belt conveyer; a herringbonesolar panel is horizontally arranged above the elongated box and is fixedly connected with the elongated box through two connection rods; the sidewall, far away from a first conveying barrel, of theelongated box is fixedly connected with a battery; the herringbone solar panel is electrically connected with all of a dual-shaft motor, a drying mechanism and the battery. The sliding feeder has reasonable structure, is suitable for providing sliding feeding for livestock freely ranged on cold upland steppes, can maintain fed forage dry, and can provide warmth for livestock in cold weather.

The invention relates to a ground satellite receiving system and electric power. According to new techniques such as the structure and transmission mode of the system, collineation of electricity and signals can be realized by concisely laying information lines and electric power lines; information carried by the more than 2GHz electromagnetic waves can be transmitted remotely; the new techniques can be directly applied to a wire technique and a wireless technique; the techniques such as the satellite system applying the electromagnetic waves with abundant channel number as all-round bandwidth information and the all-round asymmetric broadband system are used for human development; coaxial cables are eliminated; the techniques far surpass optical fibers; the satellite electromagnetic waves of different satellites and different frequencies are supplied to multitrillion signals and users according to arbitrary selection through ground satellite receiving antennas (1), inner chamber metal hoppers (2), inner surface metal tubes (3), frequency converters (7) and satellite receivers (5) which are integrated; moreover, the electromagnetic waves are supplied to electric appliances and industrial electric power; the cost is reduced in a multitrillion level; the information and data are increased in a hundred million level; and the world information can be shared by China, world cities, mountainous areas, steppe areas and sea surfaces in balance.

The invention relates to a multi-vane horizontal-type movable wind power generator, which has characteristics of small size, easiness in dismantling, convenience in transportation, good mobility and light weight, has important significance on the field of the low-carbon energy technical development, and overcomes the defects of the traditional wind power generator such as large size, small power, low utilization rate of wind, difficulty in synchronization, poor mobility, high cost and low benefit. The utilization rate of the wind power can reach more than 95 percent. An engine integrating the manipulability such as manual control of starting, stopping, acceleration and deceleration is adopted, the attacking and destruction of ultra-strong windstorm disasters (except for tornado) can be completely avoided through the manual control, and the wind direction can be automatically adjusted in 360 degrees. The engine is high in technical content, simple in production and manufacturing technology, low in cost and particularly capable of meeting different power consumption demand away from the national electric network environment such as the remote mountainous areas, steppe nomad and field operation as well as different civil and private power generation requirements.

The invention relates to the technical field of fire prevention and control, and discloses a forest steppe fire risk prediction decision-making method and device and computer equipment, and the method comprises the steps: carrying out the fusion of ground feature reflection spectrum data of a forest steppe region, ground climate data, geological exploration data and other multi-source heterogeneous data; inversing the temperature vegetation drought index and the vegetation analysis current condition by using an inversion technology, and estimating a future time sequence of a temperature vegetation drought index forecast value based on a temperature vegetation drought index forecast model obtained by modeling; secondly, predicting the future risk degree of the forest steppe region by using the future time sequence of the temperature vegetation drought index forecast value, the water source distance and the vegetation flammability characteristics, analyzing the current vulnerability of the forest steppe region by using the forest ecological asset value and the population density, and finally, determining the temperature of the forest steppe region on the basis of the future risk degree and the current vulnerability. And determining forest and steppe fire risk forecasting decisions in each future time so as to provide accurate deployment decision suggestions for forest and steppe fire prevention.

The invention relates to a steppe soil loosening, spraying, sowing and fertilizing device, in particular to an all-in-one steppe soil improvement machine. The all-in-one steppe soil improvement machine comprises a machine frame and driving equipment, wherein the driving equipment is arranged at the front end of the machine frame and is connected through a traction plate; a traveling wheel is fixedly connected to each of two sides of the bottom of the machine frame through a traveling wheel fixing frame; a plurality of puncturing mechanisms are arranged at the positions, on the front and rear sides of the traveling wheels, at the bottom of the machine frame abreast at intervals along the width direction of the machine frame; a spraying mechanism is arranged on the machine frame; a sowing and fertilizing mechanism is arranged at the rear end of the machine frame; the sowing and fertilizing mechanism and the spraying mechanism are connected with a control device arranged in the driving equipment respectively. The all-in-one steppe soil improvement machine is reasonable in structural design and integrates functions of soil loosening, spraying, sowing and fertilizing, corresponding needed construction processes can be selected according to the specific issues of steppe soil, the damage to the soil surface layer is small, the influence on loosening of surrounding soil caused by blockage of local barriers is effectively prevented, the survival rate of natural plants is improved, and the problems in the prior art are solved.

The invention relates to the technical field of steppe fire monitoring, and provides a steppe fire monitoring and early warning method and device based on multi-source heterogeneous data, a computer readable storage medium and computer equipment. The method comprises the steps of acquiring an unmanned aerial vehicle multispectral image, a first satellite remote sensing image and grassland environment influence factor data; performing correction processing on the first satellite remote sensing image according to the unmanned aerial vehicle multispectral image to obtain a second satellite remote sensing image; according to the second satellite remote sensing image, constructing a combustible moisture content inversion model; according to the combustible moisture content inversion model and the grassland environment influence factor data, a grassland fire danger index model is constructed, and a grassland fire danger index grid map layer is obtained; obtaining a grassland fire danger grade zoning map according to the grassland fire danger index grid map layer; and determining a target monitoring area according to the grassland fire danger grade zoning map. By adopting the method, the fire point identification efficiency can be improved, the phenomenon of underreporting is avoided, and the accuracy of determining whether a fire occurs in the grassland is improved.

The invention discloses a pasture growing method for use in a desert region, and belongs to the technical field of desertification control. The method comprises the steps of land preparation, sowing and fertilization, and is suitable for a saline-alkaline desert region of which the altitude is 1,800-2,200 meters. After pretreatment of a selected land, different types of sowing and fertilization are performed gradually, and wind prevention, sand fixation and desert greening can be performed periodically, so that the ecological system of the desert region is improved effectively, stable transition of the desert region to a steppe region is realized, development of the planting industry and animal husbandry is promoted, the land resource utilization ratio can be increased, and the economical benefit of peasants is increased.

The invention discloses a desert steppe control test warming device which comprises an outer body frame, a culture frame for culturing soil is fixedly mounted at the bottom in the outer body frame, sliding grooves are formed in the two sides of the inner wall of the culture frame, a sampling shell is arranged on the culture frame, and a sampling mechanism for automatically sampling soil is arranged in the sampling shell. The sampling mechanism comprises a rotating rod located at the top of the inner wall of the sampling shell and rotationally connected with a fixed shaft, an eccentric gear I is fixedly connected to the end of the rotating rod, a cylindrical cam is fixedly connected to the end, away from the rotating rod, of an output shaft of the eccentric gear I, and a fixing plate is fixedly installed on the side, close to the cylindrical cam, of the inner wall of the sampling shell; one side of the fixing plate is provided with a limiting groove and is in limited sliding connection with a sliding column through the limiting groove, and the end, away from the fixing plate, of the sliding column is located in a cam groove of the cylindrical cam. The device has the advantages that automatic sampling and collecting are achieved, meanwhile, the collecting efficiency is improved according to temperature changes, and the problems in the background technology are solved.

The invention discloses a manufacturing method of a Stipa plant seed roll and a seed roll spreading and sowing method. A Stipa collecting net is a seed sticking net formed by weaving multiple coarse wool yarn, short fluff is arranged on the wool yarn for weaving the seed sticking net, a manufactured Stipa collecting net is dragged on the grass, and Stipa seeds are attached to the Stipa collectingnet by long awn of Stipa plant seeds and hard barbs at bottoms of the seeds; the Stipa collecting net with the Stipa seeds is rolled into a cylindrical seed roll with height of 1 m. The seed roll is spread on the surface of finished soil, soil coverage is performed with depth of 1 cm, and irrigating is performed after soil coverage; sowing is selected in the rainy season in areas without irrigation conditions, waiting for precipitation is performed after sowing, and the soil surface is covered with non-woven fabric. Harvesting and sowing of the Stipa plant seeds in a large area are made possible, the problems that the Stipa plant seeds are intolerant to drought at seedling stage, the seedling protection rate is low and the like in production practice are solved, and technical guarantee forrestoration of degraded Stipa steppe is provided.

The present invention relates to a steppe soil moisture retention enhancing material preparation method, and belongs to the field of moisture retention materials. In the prior art, the current steppe soil layer is thin, the large gap structure under the soil causes the rapid water penetration after raining, and the water can not be locked, such that grass growth is not exuberant. A purpose of the present invention is mainly to solve the technical problem in the prior art. According to the present invention, the steppe soil moisture retention enhancing material preparation method is provided, the waste manure is used to prepare the biochar, the cost is low, the surface performance of the prepared biochar can provide the water retention effect so as to increase the water content of the soil, and the treated biochar is rich in nitrogen, phosphorus, potassium and other elements so as to promote the plant growth.

The invention discloses a method for planting cylindrical Elymus under a rain-fed condition in a typical steppe region. The method comprise: firstly planting seedlings of cylindrical Elymus indoors inadvance; then selecting a land in the year of planting and preparing the land, and applying a soil conditioner in soil; after rain, planting the seedlings which are performed by seedling hardening intime, and arranging wind prevention and sand-fixing device on edges of the piece of land; finally, performing field management of cutting and topdressing on the planted the cylindrical Elymus. The method adopts a method of tissue culture to cultivate the Elymus nutans in advance, and can significantly improve the survival rate and the wintering rate of the cylindrical Elymus.

The invention discloses a root cutting device for a grazing degraded Chinese wildrye steppe in a typical steppe region. The inside of the device can be only provided with an ordinary rotary cutter capable of performing root cutting operation in an advancing direction and can also be provided with an inserted cutter reciprocating in a vertical direction, the inserted cutter can perform root cuttingoperation without moving in the advancing direction, and the normal advancing of the device cannot be delayed; specifically, an advancing wheel of the device is provided with a crawler belt, the crawler belt paved on the ground between a front wheel and a rear wheel is static relative to the ground, the inserted cutter is mounted on the crawler belt, and therefore, the inserted cutter can be static relative to the ground when the device advances as a whole, and the static time is relatively short, but is long enough for performing the root cutting operation once; and the advancing speed of the inserted cutter is higher than the overall advancing speed of the device, so that the advancing of the inserted cutter can be paused for many times and can perform the root cutting operation.

The invention discloses a positioning and buckle system on a net frame for restoring the topsoil of a mountain desert steppe degraded grassland. The net frame includes a fixing pile and a filter screen assembly that can be separated from each other. The bracket is used to quickly and easily fix the fixed pile on the ground, and does not hinder the storage and transportation of the fixed pile; the filter screen assembly includes a screen main body and two connecting columns respectively arranged at both ends of the screen main body, the two The main body of the filter screen can be wound around each connecting column, so that the distance between the two connecting columns can be adjusted. On the fixing pile, there are mounting holes for accommodating the connecting columns along the vertical direction. The buckle system includes a hole plug, and the hole plug is used to be fastened at the opening of the installation hole in which the connection post is built, so that the connection post and the installation hole are fixedly connected.

The invention relates to the method for land treating, which in detail is method for the steppe land treating, comprising the following steps: (1) removing the weeds in the steppe, (2) cultivating the land, (3) fertilizing, (4) sowing; compared with the existing technique, the method of this invention can not only increase the utilizing value of steppe, but also improve the ecological condition of the earth, stopping the phenomenon of steppe becoming desert and increases the grain yield at the same time.