415 results about "Dry season" patented technology

The invention discloses a mine ecological remediation and slope vegetation fast restoring method suitable for the arid region. The method comprises a slope protection method and the steps that water collecting devices are arranged; soil improvement is carried out; vegetation configuration is carried out. Firstly, according to the through slope arrangement, mining slide slopes needing to be restored are subjected to step type slope cutting to be stabilized, an ecological catchwater is arranged on the inner side of each stage of a platform, and the steps are continuously provided with desilting basins and water collecting pits every other certain distance. Water collecting devices are mounted in the water collecting pits and connected with the desilting basins and the catchwaters, the other ends of the water collecting devices are provided with controllable drainage ports, the water collecting devices are connected with a slope irrigation system and used for collecting and fully and reasonably utilizing slope runoff, a dry season irrigation water source is provided, meanwhile, slope scouring is avoided, and water and soil losses are reduced. The platform and the slopes are all covered with earth, a planting pit is dug in each stage of the platform, the mode of ecological bags and ecological blankets is adopted in each stage of the slopes, a soil conditioner and foreign soil from other places are mixed, the planting pits, the ecological bags and the ecological blankets are filled with the mixture, and good water and fertilizer conditions are provided for plant growth. Proper trees brushes and grasses are selected to be distributed. The ground conditions of the side slopes are comprehensively improved, and side slope vegetations are restored to the natural ecological state.

The invention discloses a plantation method for a tea tree. The plantation method comprises the steps of soil preparation, soil pH value adjustment, plantation, tea garden management, weed and pest killing, dressing and pruning. The plantation method comprises the following specific steps: adjusting the soil pH value to 4.5-6.5 according to the soil property after soil preparation; after the tea tree is planted, filling gaps with seedlings and thinning the seedlings under the condition of missing of tea tree seedling plants, and performing shallow tillage and ridging before the dry season comes; when weeds grow at the ridge edges, shortening the weeds, dressing an organic fertilizer on a young tea garden according to the growth situation of the tea tree, and properly pruning the tea tree to contribute to the growth of lateral branches of the tea tree. The tea tree planted by using the plantation method is pollution-free, and no pesticides, no chemical fertilizers and no selenium-rich elements are used.

The invention discloses a method for cultivating tea comprising the steps of, tea plantation sun screening, planting deciduous arbor around the tea plantation and between the tea trees, covering the tea plantation through rice straw and planting bean green manure, applying special-purpose fertilizer for organic tea, inoculating beneficial soil organisms and soil creatures including right amount of earthworm, finally carrying out irrigation through mini- sprinkling irrigation system in high temperature dry seasons.

The invention discloses a reservoir, sluice and pump cluster combined saltwater tide control and scheduling method. The method comprises the following steps of: S1. establishing a Pearl River basin distributed hydrological model based on EasyDHM; S2. establishing a backbone reservoir cluster saltwater tide control and scheduling model; S3. calculating a flow process of a key node of the basin by utilizing the Pearl River basin distributed hydrological model based on EasyDHM, and inputting the flow process into the reservoir cluster saltwater tide control and scheduling model, thus obtaining a flow control process of a downstream key section through the model; and S4. determining a draining sluice, a freshwater releasing for water replenishing and saltwater tide control time and a draining saltwater tide control flow by utilizing a sluice and pump cluster freshwater releasing for water replenishing and saltwater tide control scheduling model. The reservoir, sluice and pump cluster combined saltwater tide control and scheduling method analyzes the runoff characteristics of the Pearl River basin in a dry season, forecasts the inflowing process of the key section of the basin during a drought period, and establishes an optimized scheduling model for the backbone reservoir cluster of the basin, thus achieving the coupling, nesting and rolling correction of real-time scheduling schemes on the basis of optimizing the scheduling schemes, overcoming the disadvantages brought by a deterministic scheduling model, and greatly improving the utilization rate of water resources during a scheduling period.

The invention discloses a method for controlling salt and saving water of nutritional soil for planting crops on a mudflat saline-alkali land. The method comprises the following steps of: determining a salt control target value according to a salt-tolerance threshold of planted crops; restraining salt content and making moisture by irrigating soil moisture water into the mudflat saline-alkali land; performing deep plowing and deep tillage after the soil is dry; paving crushed crop straws under the surface of the soil; seeding after leveling the land; and finally returning the crop straws into the land for covering a sown land surface. Due to the adoption of the technical scheme, water resource is saved; and the irrigation amount can be reduced in the growth and development stages of the crops. When the soil moisture water is irrigated before sowing, because a four-electrode salt content sensor is adopted for monitoring a desalting process of the soil in real time, an irrigation salt control target and irrigation stop time are defined, and water resource loss is reduced; simultaneously, the straws are buried deeply and covered on the land surface, continuous damage caused by a capillary action is caused; an uplink surface congregation effect of the salt content in subsoil and underground water is prevented; soil salt return is inhibited effectively without irrigating for washing the salt in a dry season so that the water resource is saved; in addition, water loss is reduced because of the coverage on the surface of the land, the moisture keeping effect of the soil is improved and the irrigation amount in the growth and development stage of the crops can be reduced.

The invention provides riverway water quality purification and ecosystem restoration adjustable wetland technology, which comprises that: a rubber dam with adjustable height is arranged in a riverway; potamogeton plants are planted at the upstream of the rubber dam of the riverway to form artificial wetland; the planting density of the potamogeton plants is between 20 and 30 clusters / m, and a cluster is between 3 and 4 plants; the retention and purification time of river water in the artificial wetland is adjusted by adjusting the height of the rubber dam, the height of the rubber dam is improved in normal and dry seasons to store water to make the water level at the upstream of the rubber dam of the riverway improved, and the adjusting height of the rubber dam is determined by the COD concentration of the river water at the inlet of the artificial wetland and the temperature of the river water. By planting the potamogeton plants in the riverway to form the wetland, instead of lifting the water onto land to construct an artificial wetland, the technology can more directly and effectively restore the damaged riverway ecosystem, improve the water quality of polluted river water, and can ensure normal flood discharge of the riverway in flood season.

The present invention discloses a method to plant Moringa oleifera used to dry-land fruit trees at the dry and hot valley of Jinsha River, pertaining to the field of forestry planting technologies. The method includes five steps, i.e. nutrition-bag seedling raising, selection of planting land, planting, caring and protection, and seed collection. A 60cm wide streaky level-ground is prepared 1-2 months prior to planting, the row spacing is 250cm, the plant spacing is 250-300cm, 60 multiply 60 multiply 70cm pits for Moringa oleifera planting are dug, 3-5kg farmyard manure or 1kg fertilizer mixture containing 16 percent of calcium superphosphate is filled in each pit as basal fertilizer; the seedlings are raised from April to May, and planted during the rainy season from June to July; the Moringa oleifera is trimmed and sheared carefully; irrigation is conducted 2-3 times during dry seasons, and fertilized once during the irrigation in January. The method is comprehensive, simple and easy to promote, and is capable to achieve 40-57kg Moringa oleifera seeds per mu 3-4 years after planting, the yield is increased by 24-78 percent and 27-81 percent compared with 1 and 2 respectively; thereby, the yield per unit area and the income are increased.

The invention discloses an integrated rainwater system for a sponge city and a construction method of the rainwater system. The rainwater system comprises a middle green belt and water storage tanks, wherein the middle green belt comprises a vegetation planting area and a rainwater infiltration area; a concrete course is arranged at the lower end of the rainwater infiltration area; a rainwater pipe is arranged at the lower end of the concrete course, and the rainwater pipe is connected to the water storage tanks; water pumping pipes are connected from the interiors of the water storage tanks; bidirectional nozzles are arranged at the other ends of the water pumping pipes; and water pumps are connected to the water pumping pipes. In accordance with the shortcomings of the prior art and the characteristics of the sponge city, the rainwater system, which integrates water seepage, water storage, water purification and utilization, is designed, and the construction method of the rainwater system is correspondingly designed; by promoting the water seepage with the adoption of vegetation, the problem of road water-logging is solved through slow discharge and controlled release; and in addition, some impurities in the rainwater are separated on the basis of the purification capacity of the vegetation, and the rainwater is stored in the water storage tanks and is used for spraying roads and watering the vegetation in dry season, so that adverse effect caused by drought and flood seasons can be effectively relieved.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention relates to a chemical improvement conditioner suitable for a coastal beach and a strongly saline-alkaline land and an application method thereof. The chemical improvement conditioner comprises the following components in parts by weight: 50-70 parts of ardealite, 20-30 parts of humic acid, 5-10 parts of aluminum sulfate and 3-5 parts of potassium dihydrogen phosphate. The chemical improvement conditioner disclosed by the invention has the advantages of simple improver component and preparation process, clarity in principle, low cost and quick effect. The application method of the chemical improvement conditioner aiming at different planting modes and soil salinity conditions provides an optimized application mode of 'less use for dry farming, more use for water farming, less use for a dry season, more use for a rainy season, more use for double salt and less use for light salt' by comprehensively considering the plant modes, soil salt contents and the rainfall difference of different seasons, thereby improving the desalting and alkali-improving efficiency, farthest decreasing the residues of an improver in soil and realizing multiple purposes of salt leaching, soil improvement and fertility improvement of the coastal beach and the saline-alkaline land.

The invention relates to a calculation method for ascending and descending amount of a top face of a low embankment of a ballastless track under the expansion-shrinkage action of an expansive soil foundation, so as to reasonably determine the ascending and descending amount of the top face of the low embankment under the expansion-shrinkage action of the expansive soil foundation in the flooding period, rainy seasons, dry seasons and the like, and provide bases for design of the low embankment of the ballastless track in the expansive soil zone. The calculation method is simple, easy for obtaining parameters, clear in physical meaning and capable of adapting to actual engineering demands. The method includes the following steps: (1) modifying the cross section of the rear low embankment by considering influence of the depth-width ratio of the embankment; (2) adopting the Boussinesq theory to calculate additional stress on the foundation under the modified low embankment load, and determining a modified low embankment calculation model; (3) calculating the ascending and descending amount of the top face of the low embankment under the expansion-shrinkage action of the expansive soil foundation by taking into consideration the 'compression' effect and 'unloading arch' effect of a low embankment body under the expansion-shrinkage action of the foundation.

The invention discloses a pre-reservoir series system of purification for non-point source pollution in small watershed agriculture of hilly and mountainous areas. The system comprises a series of small-size pre-reservoir units in series, wherein each pre-reservoir unit mainly comprises four parts: (1) an ecological reservoir and a spillway sluice: by building a water retaining dam to construct the ecological reservoir used fro storing water for dry seasons, retaining for rain seasons and settling sediments and suspended solids in runoff; (2) a setting pond for removing particulate matters and sediments to protect the aquatic vegetation of the pre-reservoir area to a certain degree; (3) flood discharge ditches (ecological ditches and flood discharge pipes) for preventing flood from damaging the pre-reservoir from the front and from the side when heavy rain falls; and (4) a pre-reservoir area: the aquatic vegetation with strong adaptive capacity under stress conditions, good purification effect, and developed root system for recovering the water level. The invention provides a technical reference for non-point source pollution control in small watershed agriculture of extremely difficult hilly and mountainous area, and has the advantages of simple construction, strong pertinence, harmony between the flood discharge and purification, etc.

The present invention discloses a basin hydrological model stage-based rating method considering flow and evaporation. The method comprises the following steps of collecting and organizing historical conventional hydrological observation data and remotely sensed evaporation data of a basin; performing base flow segmentation on flow observation data, and dividing a whole analog period into a dry season and a non-dry season; building a basin hydrological model; determining a multi-target optimization function considering flow and evaporation, and performing parameter recognition; obtaining flow and evaporation analog sequences by using the hydrological model and preferred parameters; and selecting evaluation indicators, and evaluating the accuracy of the flow and evaporation analog results. The method can be widely used in basin hydrological analog and prediction as well as parameterization and other fields of regions without data, remarkable impact of evaporation on water volume balance of the dry season is taken into account based on parameter rating of the present invention, the preferred parameters can better reflect basin hydrological characteristics, and the basin hydrological analog accuracy is improved.

The invention discloses a method for culturing and transplanting a seedling of cassava, which belongs to the technical field of plant cultivation. In the method, the seedling is cultured at the end of a dry season and at the beginning of a rainy season, wherein the furrow height of the cultured seedling is 15 to 20cm and the width of a furrow surface is 8 to 10cm; a seedling culturing material adopts a stem section cuttage propagation method; a stem stick under a branch of the cassava is cut off to form a seed stem, wherein the length of the seed stem is 15 to 20cm and the thickness of the seed stem is 1 to 3cm; a root dipping agent is prepared by mixing 0.5 to 1 kilogram of calcined lime, 0.5 to 1 kilogram of rooting powder and 10 to 20 kilograms of water before cuttage; after dipped into the root dipping agent, the seed stem is inserted into the furrow surface, wherein the distance between every two seed stems is 20 to 25cm; and thoroughly decomposed clear dung water is used for irrigation for one time after 3 to 5 days of the cuttage, the seedling with the height of 8 to 15cm is transplanted. The method has the advantages that average survival rate is up to 92 percent, planting survival rate is 18 percent higher than that of plants by the conventional cultivation method, 300 strips of sprouts are saved in each square hectometer, 20 days of labor force is saved in each square hectometer, operation is simple and convenient and the method is easy to grasp.

The invention relates to the field of hydropower generation and dispatching, and discloses a long-term joint peak regulation dispatching method for trans-provincial interconnected hydropower stations. The technical scheme is as follows: a multi-objective optimization model of hydropower stations is set up with the goal of maximizing the amount of power generation and minimizing the peak-valley ratio of a typical day in the dry season, by the use of trans-provincial and trans-regional interbasin hydrological characteristics and the regulation performance difference among power supplies, the power stations are grouped according to an output interval of each power station and the calculation sequence of the power stations is coordinated by stages; and the optimal water level process of sending and receiving end hydropower stations is optimized by using a step by step optimization and dynamic planning successive approximation coupling algorithm and a sending end faced load is reconstructed according to transmission restriction constraints of a trans-provincial DC tie line, the output process of the typical day is determined by a successive load shedding strategy, and a long-term power distribution scheme of the hydropower stations and the electric power process of the typical day in each month are obtained through iterative optimization. The method of the invention can make full use of compensating regulation characteristics of the sending and receiving end hydropower stations, effectively responds to the long-term power demand of a power grid and the short-term peak regulation demand, and meets the actual needs of the trans-provincial and trans-regional dispatching of a giant hydropower station.

The invention discloses an ecological restoration method for tailing depot reclamation after tailing depot closure. According to the ecological restoration method, a water storage system, a water drainage system and an irrigation system are designed; construction restoration measures adopted by each system accord with environmentally friendly ecological restoration; an interrelated overall system can be formed through the water storage system, the water drainage system and the irrigation system; much water can be impounded in dry seasons so as to be used for irrigation, and floodwaters can be rapidly drained in flooding in rainy seasons, and therefore, the safety of a tailing depot can be ensured, and gravity irrigation can be realized; and regulation can be performed according to the needs of crops, water level in the tailing depot, and weather conditions. The ecological restoration method of the invention can be applied to reclamation ecological restoration and effective utilization of tailing depots after tailing depot closure in various kinds of mines.

The invention provides a comprehensive method for utilizing fruit trees, pastures and livestock on the deteriorated mountain lands at the dry and hot valley of Jinsha River, pertaining to the field of forestry, pasture and livestock. The method includes 8 steps, i.e. species selection, seedling raising, preparation of interplanting land, interplanting, care and protection, collection of fruits and legumens, cradling column flowers to feed goats and as well as stable-breeding and semi-stable-breeding of goats. The species select tamarind, column flower / grass and goat; by seedling raising, rational thick-planting, bottom dressing, top dressing, dry-season irrigation, feeding goats with column flower and grass, stable-breeding and semi-stable-breeding of goats, the total nitrogen of 0-20cm soil stratum of the planting area with 2 years of interplanting is increased by 0.025 percent, the organic substance is increased by 0.29 percent, the beneficial self-cycle of water and nutrition is achieved, and the cost is reduced; after 2 years of interplanting, the column flower and grass are used to feed goats, the income of the first year increases by RMB 7050-11150 / hectare and the income of the second year increases by RMB 17850-26050 / hectare; in addition, the harmonious development of the forestry, pasture and livestock and the improvement of deteriorated mountain lands at the dry and hot valley of Jinsha River are ensured.

The invention relates to the technical field of river bank vegetation recovery, in particular to a method for planting plant at a terrestrial-aquatic transverse zone of a river bank. The method for planting the plant at the terrestrial-aquatic transverse zone of the river bank includes that selecting shrub, arbor and herbaceous plant from March to April at each year; flatting a planting land in a gravel bank land of the terrestrial-aquatic transverse zone of the river bank, wherein the distance between the gravel bank land and the normal water level of the river bank at the dry season is 20 to 200 meters, and the planting region comprises a banded herbaceous plant planting sub-region, a shrub planting sub-region and an arbor planting sub-region parallel to the flow direction of the river water and arrayed in sequence from the river center to the banks; setting planting cavities which are arrayed in Chinese character Pin-shaped in the planting region; obliquely planting the shrub, arbor and herbaceous plant in the planting cavities, wherein the oblique direction is the same with the water flow direction; refilling the excavated sand soil, using a large gravel to cover the surface layer, using gravels to retain at the four sides, using an iron wire net to cover the gravel surfaces and fixing on the river shoal, and watering the plant; watering till the shrub and arbor shoot buds, and reducing the watering times after shooting buds.

The invention discloses a mountain area river ecological runoff calculating and application method, and solves the problems that mountain area small and medium river annual rainfall distribution is not even, water inflow in a dry season is insufficient, and limited ecological runoff cannot satisfy wide and shallow riverbed full coverage and current continuity; the method comprises the following steps: using a Tennant method to calculate the minimum ecological runoff volume that satisfies the riverbed ecology system basic demands, wherein the minimum ecology flow cannot cover the whole riverbed and form certain depth in a non-flood season; using the minimum ecology flow as the design flow, and using a manning formula to calculate to-be-drilled width and depth of the main channel riverbed; drilling down the riverbed in the main channel of the riverbed according to the calculated width and depth. Engineering measures can narrow and deepen the riverbed, so limited ecological runoff can flow along the riverbed center in the non-flood season, thus preventing riverbed cutoff, ensuring river water body continuity, ensuring riverbed ecology flow, and satisfying mountain area river aquatic biology survival and multiplying basic demands.

The invention provides a seasonal design flow computing method for river-type water functional areas. The seasonal design flow computing method comprises the steps of establishing a distributed hydrological model and simulating and verifying the watershed hydrological processes of the river-type water functional area to be studied, establishing the corresponding relation of each river-type water functional area to be studied to each sub-watershed inside the distributed hydrological model, outputting the long series monthly runoff volume simulation results of each sub-watershed of a section under each river-type water functional area to be studied according to the corresponding relation, selecting the long series runoff volume simulation results of corresponding months of each river-type water functional area to be studied according to the design flow accounting rule of the river-type water functional areas to be studied according to the corresponding relation, ranking and selecting the flow having a certain assurance rate as the design flow of the river-type water functional areas to be studied. The seasonal design flow computing method for the river-type water functional areas is capable of checking the design flow of the water functional areas in each period by selecting different time periods (such as dry season, normal river flow period and flood season), and then capable of supporting delicacy management of the water functional areas.

The invention discloses a vegetation bag ecological slope protection construction method and a vegetation bag rainwater treatment system. The vegetation bag ecological slope protection construction method comprises the following steps: (a) performing construction preparation; (b) measuring and lining; (c) excavating a foundation pit; (d) pouring concrete to obtain a slope foundation; (e) performing primary rainwater treatment system construction; (f) performing whole slope construction; (g) manufacturing beam grillages; (h) performing secondary rainwater treatment system construction; (i) stacking vegetation bags; (j) planting plants. According to a vegetation bag ecological slope protection system, plant growth substrates are fixed to the interiors of vegetation bags, so that a side slope is more stable and has erosion resistance by utilizing the anchoring effect of the roots of plants; the slope protection foundation which is erosion-resistant, firm and breathable, and suitable for the growth of the plants is formed by combining the characteristics of the beam grillages and the vegetation bags. Meanwhile, the rainwater treatment system is added, so that rainwater is stored in a rainy season and can be used for irrigating the plants in a dry season; on one hand, the slope protection pressure is relieved, and the water and soil loss is further prevented; on the other hand, the rainwater treatment system is favorable to the growth of the plants.

The invention relates to a river basin rare earth mine tail water treatment system and a river basin rare earth mine tail water treatment process. Aiming at the characteristics that rare earth mine tail water is a natural environment water yield and fluctuation of pollutant concentration is relatively large, the system has three operating modes: a normal operating mode, a wet season operating modeand a dry season operating mode. An emergency treatment unit is additionally arranged at the tail end. Ammonia nitrogen and total nitrogen exceed standards when a nitrification-denitrification coupled biological membrane filter system A, a carbon source pond, an adjusting pond B and a nitrification-denitrification coupled biological membrane filter system B go wrong and influent concentration andinfluent flow exceed a designed load or extreme environments such as ultra-low temperature (the water temperature is lower than 5 DEG C) and the like. Due to the addition of chemical reagents such assodium hypochlorite into the emergency reaction pond, a breakpoint chlorination reaction is carried out to remove ammonia nitrogen and total nitrogen, so that effluent reaches the standard stably.

The invention relates to a method for embedding edible mushroom into the cavity of fruit tree, which can use the mushroom slag to adsorb and keep water, as the organic fertilizer to improve the soil quality, to reduce the leakage of water after traditional water irrigation. And it can release the water of mushroom slag slowly, in dry season, to circulate waste material.

The invention provides a planting technology for organic lemons, and belongs to the technical field of fruit tree plantation, and especially relates to a planting technology for lemons. The invention provides a planting technology for organic lemons, and the planting technology is high in survival rate and good in disease-resistant capability. The planting technology for organic lemons comprises: (1) building an orchard, using a rice field to build a lemon orchard, building high furrows downslope to draw off water and dry the field, after soil is bleached in the coming year, according to field planting row spacing fixed points, planting pier bottom whose diameter is about 1 m; (2) planting in a region where rainwater distribution is uniform; (3) planting lemons, planting density generally being 3.5 m x 4 m, preferably planting 42 plants in each mu, planting period generally being in spring and autumn, and autumn transplanting should be performed in September to October; (4) intertilling and weeding, in summer and autumn dry seasons, intertilling before drought, to keep soil loose and reduce water evaporation; (5) performing management after planting, about 20 days after field planting of seedlings, the seedlings surviving, after few shoots grow, applying manure cleaning water.

The invention relates to a method for measuring the accumulation of the external insulation pollution of electric transmission and transformation equipment, which comprises the following steps: in the early period of a rainy season, hanging a string of insulators at each selected measuring location; and when a dry season begins according to prediction, collecting and measuring the pollutant content of the first insulator; after a sampling interval of one dry day, collecting and measuring the pollutant content of the second insulator. Thus, the process can calculate pollution accumulation rate and pollution accumulation change state and provide calculation data for acquiring the maximum pollution accumulation state in a certain region during a period of n years.

The invention relates to ecological water supplement technology for lakes based on multi-scale wavelet transform, which is characterized by not only well extracting the information of the water level on different scales by applying the excellent performance of multi-resolution analysis of wavelet transform but also reconstructing the wavelet coefficients of main scales and combining other hydrological and ecological data to obtain the division standards of hydrological stages, determining the suitable hydrological stage containing the wet and dry seasons and putting forward a scheme of ecological water supplement for lakes, which simultaneously takes both the minimum ecological water level and the in-year water level fluctuation characteristic into account. Compared with the prior art, the invention is characterized by more deeply discussing the multi-scale characteristic of hydrology, being closer to the natural hydrological conditions of lakes than the single minimum ecological water level of traditional water supplement and providing bases for analyzing the state of the hydrological environment of degraded wetlands, formulating water supplement schemes suitable for specific regions and improving efficiency of water supplement for lakes.

The invention discloses a lawn protecting method adaptive to climatic change in high frigid grassland regions, and relates to a technology of ecological restoration and high frigid grassland climatic change adaptation. The method comprises the following steps of: dividing a grazing grassland into three parts according to the grassland utilization mode, namely a warm season grazing region, a drop spraying irrigation region and a low shed drop irrigation region; performing fencing and rotational grazing on the three parts respectively; irrigating the grassland by using rive and lake water and warm season rainfall and combining a water-saving irrigation technology; performing reseeding, harvesting and storage or shed opening and rotational grazing on the grass of the drop spraying irrigationregion and the low shed drop irrigation region according to the climatic conditions; and determining the irrigation quantity according to the local climatic change condition, namely the difference between the rainfall precipitation and the grass demand quantity, and determining the climatic change adapting capability of the method. The method can solve the problems that edible grass for livestockin dry seasons is reduced, the meadow area in the dry seasons is small, and the grassland is destroyed by livestock and the like; and the productivity of the grassland in summer and the livestock bearing quantity are improved, recovery and protection of the ecological environment are realized, and the method is an effective measure for making the high frigid grassland regions adaptive to the climatic change.

The invention discloses a device and a method for regulating and controlling ecological water requirement in dry seasons of a riverway bankside zone under a dam. The device comprises an architecture device, a height adjustment device, a charge / discharge device, a pendulous device and a central control device. The invention also provides a method for regulating and controlling the ecological water requirement in dry seasons of the riverway bankside zone under the dam by using the device. The device is capable of running independently or running according to dispatching in combination with an upstream reservoir; the device does not increase, and even reduces the discharged volume under the dam in the dry seasons while meeting the basic requirements such as normal floodwater draw-off, shipping and upstream reservoir water supply, and therefore, effective regulation and control on the ecological water requirement of the bankside zone near the device can be realized; the water level of the riverway bankside zone under the dam can be remarkably banked up, and also the water level pulse amplitude of different areas can be flexibly controlled; and therefore, the assurance rate of the ecological water requirement in the dry seasons of the riverway bankside zone under the dam is achieved, and the uneven seasonal distribution problem of the water volume and the contradiction between the water conservancy project construction and the downstream ecological water requirement are solved.

The invention relates to a self-chambering self-discharging container ship. The container transport cannot be developed in the widely distributed smaller inland rivers in China and other countries of the world because the container terminal needs more investment, the riverboat is small, the traffic volume is small and the investment cannot be withdrawn. Meanwhile, much more obstructing buildings such as bridges are spanned across the smaller inland rivers and the water level fluctuation in the flood period and the dry season is bigger, the ship is difficult to adapt to the inland river and the ship design and the transportation are difficult to perform, so a large amount of water transport resources are in idle while the transportation by land is increasingly worsen. The inland river container transport which is energy saving, environment-friendly and low-cost is needed to be developed as soon as possible. The self-chambering self-discharging container ship can solve the problems and is a powerful tool for developing the container transport resources in smaller inland rivers.

The invention provides a street tree planting hole structure and a construction method thereof. The street tree planting hole structure is characterized in that a planting soil ball wrapped with a permeable geotextile bag is arranged in a planting hole, space between the outer surface of the planting soil ball and the inner surface of the planting hole is filled with an upper peripheral water storage layer and a lower peripheral water storage layer, the upper peripheral water storage layer comprises a top water storage layer, the lower peripheral water storage layer comprises a bottom water storage layer, a water purification layer is located on the upper end surface of the top water storage layer, a permeable layer is located on the upper end surface of the water purification layer, a permeable brick layer is located on the upper end surface of the permeable layer, and side stone is arranged on the peripheries of the permeable brick layer and the permeable layer. According to the planting hole structure and the construction method, water infiltration and storage can be facilitated, and a root microreservoir is formed; not only is overland runoff in the rain season adjusted, but also a water supplementing function in the dry season is exerted, the water storage structure can also guarantee ventilation of roots of street trees, the planting hole is endowed with functions of storing rainwater in rainy days and releasing stored water to support street tree growth in sunny days, the maintenance cost is reduced, and urban rainwater is recycled.