214 results about "Festuca arundinacea" patented technology

The invention discloses a method for biologically remediating a water body and soil comprehensively utilizing resources. The method comprises the steps: (1), determining main pollutants in a selected land area or water body area; (2), selecting to plant and / or cultivate fast-growing herbaceous plants, fast-growing alga, trees, bushes, fungi or microorganisms with high remediation efficiency in the selected land area or water body area; (3), harvesting or collecting the fast-growing herbaceous plants and the fast-growing alga after growing to reach a suitable height or size; (4), concentratedly processing the harvested or collected fast-growing herbaceous plants and the fast-growing alga, and comprehensively utilizing to prevent the pollutants from dispersing; (5), remediating an eutrophic water body by adopting an artificial floating island; (6), remediating a heavy metal polluted water body by confining floating plants; (7), repairing cadmium and zinc polluted soil by mixed-cropping festuca arundinacea and bluegrass; (8), remediating polycyclic aromatic hydrocarbons (PAHs) polluted soil by mixed-cropping alfalfa and italian ryegrass; and (9), extracting and recovering silver from silver-containing wastewater remediation plants.

The mixed pasture seeding method includes the following steps: 1. mixing leguminous pasture seeds and gramineous pasture seeds in the weight ratio of 2 to (2.6-3.4) and including alphalfa, cocksfoot, Festuca arundinacea, and Lotas japonicus or Tifolium pratense; and 2. seeding the said posture seeds in the land of slight alkaline yellow soil at height above sea level of 600~800 meters at high temperature and high humidity conditions to establish artificial grassland. The method is simple and the established artificial grassland has the features of high pasture yield and quality and is heat resistant, drought resistant and aridity resistant.

The invention relates to a method for improving activity of antioxidant enzyme of festuca arundinacea by using fine domestic garbage compost under drought conditions. In the method, a plastic pot with diameter of 7cm and height of 10cm is used through a pot experiment; and the method comprises the steps of: putting 150g of soil into each pot; sowing 0.5g of lawn plants in each pot; uniformly spreading 3g of municipal domestic garbage fine compost with particle sizes of 1,200nm, 600nm and 300nm on the surface of the soil; uniformly covering 20g of soil on the surface of the soil; controlling the temperature to be between 20 and 26 DEG C, wherein the relative humidity is between 40 and 60 percent, and illumination is natural light transmitting indoors; fully watering the plants in the initial stage of sowing, and watering by weighing every day to every two days according to 55 to 65 percent of water-holding capacity in fields after two weeks so as to maintain the capacity within a stress range; and measuring all the indexes on the 44th day. A result shows that the fine compost protects the festuca arundinacea plant from being damaged by active oxygen radicals, and reduces adverse environmental stresses to the plant caused by drought stresses.

The invention discloses a method for controlling the growth of compost substrate festuca arundinacea by using modified nano carbon. The method comprises the steps of: sealing the lower end of each PVC pipe of which the diameter is 3cm and the height is 25cm with a layer of cotton cloth and a nylon net, mixing garbage compost and all modified nano carbons uniformly in proportion, and charging 150g of mixed material into each pipe; passivating for 7 days, sowing 0.2g of festuca arundinacea seeds in each pipe, controlling the temperature to be 19-27 DEG C and the relative humidity to be 60-72% during experiment, supplementing water to the compost every day so that the moisture of the compost reaches 70% of field capacity, balancing for 30 days in a laboratory, and measuring; wherein the adding amount of each modified nano carbon is 1-5%(w / w) of the weight of the garbage compost. Experimental results show that the growth of the compost substrate festuca arundinacea is promoted by adding the modified nano carbon.

The invention discloses a method for repairing garbage compost heavy metal by adopting NTA (Nitrilotriacetic acid) of a waste interlayer. The method comprises the following steps of: filling 500g air-dried garden soil, 60g horizontal interlayer and 280g compost in a PVC (Poly Vinyl Chloride) pipe with the diameter of 7.5 cm and the length of 25 cm in turn; sowing 0.6g festuca arundinacea seeds in the pipe, applying 10-20 mmol / kg aqueous solution of NTA sodium salt of compost on the compost surface after sowing for 30 days; clipping grass after 10 days; and measuring the content changes of heavy metal Cd, Cr, Cu, Pb and Zn. A test result of the method provided by the invention shows that: the migration of harmful substances and heavy metal in the garbage compost to the soil can be reduced by paving the horizontal interlayer above the soil and under the compost, so as to increase the time of a lawn plant for absorbing heavy metal in the compost and the enrichment of heavy metal in the lawn plant under the induction of chelating agent and reduce the migration of heavy metal to deep soil.

The invention relates to a domestication method for enhancing the salt resistance of festuca arundinacea. The domestication method comprises the following domestication processes that: a domestic garbage compost substrate is flatly spread on a sample plot, then the compost becomes compact and flat by press, and the average thickness of the compost substrate is 20cm; the sowing mode is spring sowing, water in the compost substrate, which is used for domesticating the festuca arundinacea in each year, only depends on natural precipitation, and the seeds of the festuca arundinacea are harvested after 4 domestication years; a lawn nursery strip mode is as follows: the carrier of the lawn nursery strip of the festuca arundinacea is designed into double layers, i.e. a lower layer is newspaper and an upper layer is face tissues, and the seeds of the domesticated festuca arundinacea are bonded between an upper carrier and a lower carrier by an adhesive; the sowing quantity is 0.02g / cm2; after the seeds germinate, the seeds are transplanted onto a saline soil substrate with the salt content of 0.5 to 1 percent, the temperature is controlled at 20 to 26 DEG C, the relative humidity is 30 to 50 percent, and the normal growth of plants is guaranteed; and after the plants of the festuca arundinacea are cultured for 35d, lawn plants and the substrate are mown, and the salt resistance of the domesticated festuca arundinacea is measured after treatment.

The invention relates to a novel ecological side slope greening protective technology for solving the issue of ecological greening of a soil side slope and a rock side slope. The technology is characterized in that bamboo stakes and bamboo chips are used to protect the surface layer of the side slope; in addition, a modified soil is used to carry out culture greening; the modified soil consists of local soil and modifying agent; the modifying agent comprises sodium aluminate, polyacrylamide, polyacrylic resin and sodium silicate which are matched with soil according to the mass ratio of 1:2:1;3:93; the bamboo stakes are made of grown bamboos the ends of which enter the earth are cut sharp; the bamboo chips are made of bamboos with a diameter of 6-8 cm; the bamboos are cut open from the middle and made into bamboo chips with a length of 200-250cm; grass seeds are selected from ryegrass, festuca arundinacea and bushes are selected from indigofers amblyatha craib, fortune firethorn fruit and robinia pseudoacacia.

The invention belongs to the technical field of saline-alkali soil improvement and particularly relates to a saline-alkaline soil improving agent. The saline-alkali soil improving agent is characterized by comprising the following raw materials in parts by weight: 10-15 parts of flue gas desulfurization wastes, 20-30 parts of mixed grass meal, 3-8 parts of compound microorganisms, 5-15 parts of sawdust, 6-15 parts of sweet clover root powder and 10-15 parts of kieselguhr, wherein the mixed grass meal consists of sainfoin, symphytum officinale, coronilla varia and festuca arundinacea, and the compound microorganisms consist of nitrogen-fixing bacteria, Bacillus subtilis, bacillus licheniformis and bacillus mucilaginosus. The improving agent disclosed by the invention not only can greatly and effectively improve the current situations of saline-alkali soil, but also can utilize wastes and recycle resources and ecological vegetation, and is environment-friendly, safe and free of secondary pollution problem.

The invention is concerned with the application method that uses the straw and the lawn plant to recover the housing refuse with heavy metal, it is: the 10 to 80 of housing refuse compost mix with 1 to 10 of straw to make the lawn plant culture substrate, seeds on the lawn plant culture substrate and give water every day, uses the ICP-AES method to test the heavy metal content after distilling by the lawn plant from cradle the upside of the lawn plant; the result shows with the paddy straw, the recover actuation of the Cr, Ni and Cd by the secular-grow ryegrass, and the recover actuation of the Cr and Ni by festuca arundinacea are big foreground.

The invention discloses a regulation and control method for improving diversity of nanocarbon to soil nematodes. The method comprises the steps of adopting plastic flowerpots of which the lengths are 25cm and the diameters are 2cm, cleaning and drying gauzes, fixing each gauze which is cut to a round shape with a proper size at the bottom of each flowerpot, and weighing matrix garden soil of 2kg in each container, wherein modified nanocarbon of which the weight is 1-5% that of the matrix garden soil is added into the garden soil respectively; respectively sowing festuca arundinacea seeds of 4.5g respectively; regularly quantitatively watering in the experiment period every day to meet the plant growth demands, culturing the plants in a laboratory, wherein during the cultivation period, the temperature is 25-34 DEG C, the relative humidity is 31-48%, the lighting condition is natural incident light, the experiment time is 120 days, the nematodes in the soil are separated to identify the type and number of the nematodes as the background data of the nematodes, and the type and number of the nematodes are processed after separation and identification after 4 months.

The invention relates to a microsclerotium bacterial strain and a method for biological weed control therewith, belonging to the application of microorganism for agricultural plant protection. The microsclerotium bacterial strain is (SC64) CGMCC with number thereof being NO.2934. The use dosage of weeding bacterial particles obtained by solid fermentation of the bacterial strain ranges from 30g.m-2-150 g.m-2, and the weeding bacterial particles can be applied to poaceae crops such as corn, rice, wheat, barley, sugar cane, kaoliang, millet and poaceae plants such as lawn bermuda grass, zoysia japonica, festuca arundinacea, poa annua, agrostis stolonifera, axonopus compressus, eremochloa ophiuroides, ditch millet to control growth of broad-leaf weed. In addition, in particular, the weeding bacterial particles can be applied to control destructive invasive foreign weeds such as eupatorium adenophorum, solidago canadensis, horseweed herb, conyza sumatrensis, flaveria bidentis, mikania micrantha, annual fleabane herb and fragrant eupatorium herb. 80% of the target weeds can be brought under control, thus having the characteristics of safety and environmental friendliness.

The invention relates to a method for improving growth performance of lawn plants by adopting rare earth lanthanum. The method comprises the following steps of: soaking seeds of lawn plants with lanthanum nitrate water solution at a concentration of 50mg.L<-1>-300mg.L<-1> for 18-24 hours; then sowing the seeds in a culture dish with filter paper spread, and putting the culture dish with the sowed seeds in the sun to germinate the seeds; beginning recording the germination number 2-3 days after sowing the seeds; and after grass seed growth ends, cutting off the plants at ground level with scissors, measuring the fresh weight of the single plant and the total fresh weight, drying the samples in a drying box at 80 DEG C for 8 hours, and measuring each index. Adopted to soak the seeds, the rare earth lanthanum has an influence on germination and initial growth of Lolium perenne L. and Festuca arundinacea.L, has an effect on promoting germination of the two grass seeds, and has an obvious effect on promoting growth of the underground root system parts. Therefore, the research results show that the rooting degrees and green degrees of the grass seeds on the lawns are regulated to achieve the best effects by soaking the seeds with the rare earth element.

The invention discloses a manual restoration method of vegetation in a water-level-fluctuating zone of a reservoir. The method comprises the following steps: firstly, leveling, cleaning and tamping the upstream batter surface of the water-level-fluctuating zone when the water level is lowest, secondly, planting riparian homonoia roots or Chinese ash at the top of the outer slope surface of the water-level-fluctuating zone, so as to form a protective forest belt, and thirdly, paving plate-cultured festuca arundinacea on the upstream batter surface of the water-level-fluctuating zone, and in a zone with the fluctuating depth smaller lower than 2 m, and planting miscanthus floridulus in a zone with the fluctuating depth greater lower than 2 m, so as to form a hedgerow belt. The method has the advantages that the construction is convenient, the investment is small, the application range is wide, the vegetation is not easily damaged by flood, a good effect is realized, and the method can be applied to water-level-fluctuating zones of reservoirs in mountains to realize effective water and soil conservation and pollution control.

The invention relates to a method for treating heavy metal copper of soil by means of plant-animal-microorganism combined remediation. The method includes putting earthworms into soil contaminated byheavy metal copper, spraying a small quantity of water periodically to keep moisture of the oil, mixing compound microbial agents into topsoil, carrying out rotary tillage and mixing, broadcasting festuca arundinacea seeds and annual bluegrass seeds uniformly, and watering to keep the soil moist. According to the method, plant can absorb copper of soil, and earthworms and compound microbial agentsstrengthen the effect of combined remediation to heavy metal copper of soil. The method has the advantages of good effect and low cost, is easy to manage and operate, is free of secondary pollution,and has wide application prospect.

The invention relates to a method for enhancing the drought resistance of festuca arundinacea by adopting domesticated plant seeds. The process of domesticating the festuca arundinacea by a domestic garbage compost substrate comprises the following steps that: the domestic garbage compost substrate is flatly spread on a sample plot, then the compost becomes compact and flat by press, and the average thickness of the compost substrate is 20cm; the sowing mode is spring sowing, water in the compost substrate, which is used for domesticating the festuca arundinacea in each year, only depends on natural precipitation, and the seeds of the festuca arundinacea are harvested after 4 domestication years; then, the seeds of the domesticated festuca arundinacea are sown in a soil substrate according to 130 / m2 in spring, the temperature is controlled at 20 to 26 DEG C, the relative humidity is 30 to 50 percent, the seeds are fully watered at the initial stage of sowing, and the conditions that the seeds can successfully germinate and seedlings grow at the initial stage are ensured; water is quantitatively supplied according to the stress degree of the water content after two weeks, 55 to 65 percent of the field moisture capacity is reached, and the experimental period is 38d; and the festuca arundinacea and the substrate are mown after being cultured for 38d, the festuca arundinacea is cleanly rinsed by using distilled water, and the index of the drought resistance of the domesticated festuca arundinacea is measured.

The invention discloses a method for concentrating soil heavy metals of a sewage irrigation area by coalition of a composite restoring agent and festuca arundinacea, wherein the composite restoring agent consists of a chelating agent nitrilotriacetic acid (NTA) and a surfactant sodium dodecyl sulfate, wherein the mol ratio of the chelating agent nitrilotriacetic acid to the surfactant sodium dodecyl sulfate is (5-15) mmol.kg<-1>:1mmol.kg<-1>. Experimental results show that a most remarkable effect of increasing the content of Cd in the festuca arundinacea is achieved due to the addition of the surfactant and the chelating agent, the concentration of the heavy metals can be promoted through co-addition of the surfactant and the chelating agent, and especially the effect is more remarkable when 5 mmol.kg<-1> of the NTA and 1 mmol.kg<-1> of the chelating agent or 10 mmol.kg<-1> of the NTA and 1 mmol.kg<-1> of the chelating agent are used for restoring sewage irrigation soil.

The invention discloses a low-temperature resisting method for festuca arundinacea by using air-dried sludge inoculants, which is implemented by comprising components including pseudomonas stutzeri, trichoderma reesei and yellow streptomyces 100-times diluent or pseudomonas stutzeri, trichoderma reesei and yellow streptomyces 200-times diluent. Development results of the invention show that the application of the complex microbial inoculants of pseudomonas stutzeri, trichoderma reesei and streptomyces griseoflavus can significantly improve the height, the aboveground biomass and the chlorophyll content of festuca arundinacea plants, and improve the cold resistance thereof. The regreening time of festuca arundinacea to which the complex microbial inoculants are applied is about five days earlier than that in a blank, and the comprehensive index of lawn appearance of regreened festuca arundinacea is also significantly higher than that in the blank, which fully shows the application potential of the complex microbial inoculants in practice.

The invention discloses a method for utilizing cadmium-resisting fungus aspergillus aculeatus for promoting festuca arundinacea to remedy cadmium contaminated soil, and relates to the technical field of plant-microorganism combined ecological remediation. The method mainly comprises the steps that firstly, cadmium-resisting fungus aspergillus aculeatus separated, purified and identified out of rhizosphere soil of dominant species in heavy metal contaminated soil is bred and inoculated into crushed crop straw to be prepared into a microbial remediation matrix, and the microbial remediation matrix is applied into cadmium contaminated soil; secondly, a festuca arundinacea lawn is planted in a sowing manner; thirdly, watering of a citric acid aqueous solution of a proper concentration and a proper quantity is carried out in batches; and fourthly, the rhizosphere microenvironment of festuca arundinacea is adjusted and controlled through citric acid to promote the interaction of cadmium-resisting fungus aspergillus aculeatus and a root system of festuca arundinacea so as to improve cadmium remediation efficiency. The problem of adaptability of screened-out microorganisms to the soil environment is solved; transferring of cadmium towards ground parts of plants is promoted, and the cadmium remediation efficiency is improved; and good environmental benefits, economic benefits and social benefits are achieved.

The invention discloses a method for improving the reproducibility of soil matrix lawn grass through modified nanocarbon, wherein a plastic flower pot with the height of 25cm and the diameter of 12cm is adopted, a gauze is cleaned, dried and sheared into a proper-size round shape to fix the bottom of the flower pot, 2kg garden soil matrix is weighed in each container, the modified nanocarbon whose weight is 1-5% that of the garden soil matrix is added into the garden soil, 4.5g festuca arundinacea seeds are sown, water is fed timely and quantitatively every day during the experiment to meet the plant growth needs, the plant is cultured in a lab at the temperature of 25-34 DEG C and the relative humidity of 31%-48%, the light condition is natural incident light, the experiment is conducted for 120 days, the part of the festuca arundinacea on the ground is clipped on the sixtieth day of the experiment, 1cm crop is kept, the biomass of the first crop is measured, and the biomass of the second crop is measured at the end of the experiment. The experiment results show that 5% HNO3 modified nanocarbon can improve the reproducibility of the soil matrix festuca arundinacea.

The invention discloses a method for improving drought resistance of turf on garbage compost substrate, which includes: selecting a lawn plant Festuca arundinacea and domestic garbage compost, applying 0.2-0.4Xkg-1 of rare-earth lanthanum nitrate or cerium nitrate per 60g of the compost, and mixing for use; respectively scattering 0.5g of Festuca arundinacea seeds into cups; controlling largest water-holding capacity of the compost in a field to be 66% and severe stress to be 35-50%, normally supplying water early in the experiment to guarantee smooth seed germination and seedling growth, quantitatively feeding water after 2 weeks according to the degree of severe stress, and controlling the degree of drought by weighing process; and finally measuring all indexes. Experimental results show that applying rear earth increases the ratio of chlorophyll a, chlorophyll b, content of total chlorophyll and chlorophyll a / b of Festuca arundinacea under drought stress, so that optical absorption of Festuca arundinacea is enhanced, accumulation of photosynthate is promoted, and stress resistance of the lawn plant Festuca arundinacea is improved.

The invention belongs to the technical field of ensilage processing, and relates to an ensilage combination including barley straws and festuca arundinacea and application thereof. The ensilage combination including the barley straws and the festuca arundinacea consists of the following components by fresh weight: 50 to 70 parts by weight of the barley straws, 30 to 50 parts by weight of the festuca arundinacea, cellulase preparation and lactic acid bacteria compound additive, wherein the lactic acid bacteria compound additive consists of lactobacillus plantarum, bacillus subtilis and glucose by dry weight. The ensilage combination can be applied to silage production. A particular fermentation enhancer combination is chosen from a plurality of fermentation enhancers according to the characteristics of the barley straws and the festuca arundinacea, and therefore, the fermentation quality of mixed silage is obviously improved. The ensilage combination including barley straws and festuca arundinacea has the advantages of low cost, high safety and reliability and simplicity in application.

The invention relates to the technical field of side slope treatment and discloses a spray-seeding substrate for ecological reafforestation of high and steep side slopes, a preparation method for the spray-seeding substrate and an application of the spray-seeding substrate. The spray-seeding substrate contains the following raw materials in parts by weight: 330-420 parts of planting soil, 20-30 parts of peat soil, 1.5-5 parts of organic fertilizer, 1-3 parts of grass fibers, 1-3 parts of wood sawdust, 0.03-0.05 part of water retention agent, 0.02-0.04 part of binder, 0.1-0.5 part of inorganic fertilizer, 0.5-2 parts of pH regulator, 30-44 parts of seed mixture and 150-200 parts of water, wherein the seed mixture is prepared from the following plant seeds in parts by weight: 10-12 parts of rhizome-type festuca arundinacea, 2-4 parts of Trifolium repens, 3-5 parts of Medicago sativa, 2-3 parts of bermuda grass, 2.5-4 parts of Indigofera pseudotinctoria, 4-6 parts of magnolia multiflora, 3-5 parts of cassia corymbosa, 2-3 parts of amorpha fruticosa and 1-2 parts of cosmos bipinnatus. Through carrying out spray-seeding by using the substrate disclosed by the invention, an imported-soil base course with the strength of 0.25MPa or more can be formed, the rainfall erosion resistance after 45-day plain forming is not lower than 120mm / h, and a shrub-dominated and grass-shrub-combined ecological plant community with the rainfall erosion resistance not lower than 200mm / h is formed in half a year to a year.

The invention discloses a method for using chlorpyrifos and a CNT (carbon nanometer tube) interlayer to regulate lawn grass heavy metal accumulation. The method for using the chlorpyrifos and the CNT interlayer to regulate the lawn grass heavy metal accumulation uses an oxidative modification CNT as the interlayer, aims at using the interlayer to reduce underground leakage influences of heavy metal after the chlorpyrifos and compost compound heavy metal are coupled, and provides important technical support to the oxidative modification CNT in remediation of heavy metal coupling pollution. An experiment result proves that under action of the chlorpyrifos, adding of the oxidative modification CNT mixed with all layers increases heavy metal accumulation amount of aboveground parts of festuca arundinacea, and compared with contrast groups, heavy metal total amount of percolation liquid in the CNT interlayer is reduced. The adding of the oxidative modification CNT reduces the risk that the heavy metal migrates towards underground water to a certain extent, and then technical support is provided to practical application of the method for using the chlorpyrifos and the CNT interlayer to regulate the lawn grass heavy metal accumulation.

The invention discloses a method for improving chromium resistance and cadmium resistance of Festuca arundinace with compost fermentation liquid, which comprises the following steps: adding 200g of oven-dried soil into disposable plastic cups of a diameter 7cm and seeding 0.8g of Festuca arundinace seeds, respectively adding microbial inoculums to lawn plants after seeding for 10 days, respectively adding cadmium chloride solution and potassium dichromate solution to soil, repeating the experiment for three times (60 samples in all), continuing culturing at room temperature while feeding water at a fixed amount every day during the experiment to ensure uniform environment among treatment chambers, and measuring indicators after growing for 30 days. The experimental results shows that after the Bacillus thuringiensis preparation is added, the underground dry weight and the root-top ratio of Festuca arundinace are increased by 137.5% and 102.9% respectively compared with the underground dry weight and the root-top ratio of the control, and the lawn plant growth is promoted, and the chromium resistance and cadmium resistance of Festuca arundinace are remarkably improved.

The invention discloses a method for remedying heavy metals in domestic waste leakage solution, which comprises the following steps: sowing lawn plants on a plastic net based on 20-40g / square meter and culturing the lawn plants by irrigating Hoagland nutrient solution; after the lawn plants are cultured for 30 days, pouring the nutrient solution out completely, transplanting the lawn plants to the domestic waste leakage solution containing EDTA and continuing soilless culture on the lawn plants until germination; after the lawn plants are processed in the domestic waste leakage solution for 7-30 days, harvesting Lolium perenne L or Festuca arundinacea L and determining the contents of the heavy metals in the domestic waste leakage solution, on the overground parts and in the root systems of the lawn plants, thereby achieving the remediation effects of the lawn plants on the heavy metals in the domestic waste leakage solution. The technical method of the invention can effectively reduce the contents of such heavy metals as Pb, Cu, Zn, Cd, Cr and Ni in the leakage solution and features simple technical operation process, obvious economic and environmental benefits and broad application prospect.

The invention discloses a method of intensifying festuca arundinacea to repair heavy metals in soil in a sewage irrigation area by an NTA (Nitrilotriacetic Acid) and microbial agent. The agent consists of a chelating agent NTA and a microbial liquid, wherein the molar ratio of the chelating agent to the microbial liquid is 5-15mmol.kg<-1>NTA:15mmol.kg<-1>microbial liquid. The microbial liquid comprises pseudomonas stutzeri, trichoderma reesei and streptomyces griseoflavus which are mixed in a volume ratio of 1:1:1 to prepare a compound microbial liquid. The clump counts of pseudomonas stutzeri and streptomyces griseoflavus are respectively (2.15+ / -0.03)*10<9> / ml and (2.07+ / -0.07)*10<9> / ml, and the clump count of trichoderma reesei per ml spreads to the whole panel. The experimental results show that the effect of intensifying festuca arundinacea to repair heavy metals in soil in the sewage irrigation area is the best by combining 10mmol.kg<-1>NTA and 15mL of microbial liquid.

The invention discloses a method for repairing contaminated soil in a coal-to-gas plant by adopting a microbe-plant combined way. The method comprises the following steps: adding an electronic receptor preparation in the contaminated soil so as to promote anaerobic degradation of polycyclic aromatic hydrocarbons and analysis of heavy metals; mixing and composting the contaminated soil with pig manure and a conditioning agent for several days; eluting partial heavy metals from the soil by using clear water; planting sedum alfredii hance and festuca arundinacea in the soil in a mixed way so as to extract the heavy metals from the soil and promote microbial degradation of the polycyclic aromatic hydrocarbons in the soil, wherein in the growth stage of plants, additives are sprayed periodically to enhance the repairing effect. Through the adoption of the method, the environment friendliness is very high, the repairing cost is low, and the ecological environment of the contaminated soil can be effectively restored, so that the method has a broad market prospect.

The invention discloses a method for regulating turfgrass heavy metal accumulation by using an OTC (oxytetracycline) and carbon nano-tube interlayer. An oxide-modified carbon nano-tube is used as an interlayer. The objectives are to reduce effect of leaking heavy metal to underground after the OTC is coupled with compost compound heavy metal, and to provide important technical support for a modified carbon nano-tube repairing heavy metal coupled pollution. Experiment results show that under the action of the OTC, adding of the carbon nano-tubes mixed in layers increases heavy metal accumulation amount of the overground part of festuca arundinacea, and heavy metal total amount in percolate in the modified carbon nano-tube interlayer is lower than that of control groups. The addition of the modified carbon nano-tube reduces risks that heavy metal is transferred to underground water to a certain degree, and provides technical support for practical application of the method.

The invention discloses a method for removing heavy metal copper in soil by using plants. The method comprises the following steps: (1) determining a region polluted by the heavy metal copper and the copper content in the soil through monitoring, and sowing and planting Festuca arundinacea or Trifolium repens or interplanting Festuca arundinacea and Trifolium repens in the soil of the polluted region where the concentration of the heavy metal copper is less than or equal to 1,000mg / kg according to climate and soil suitability; (2) carrying out row sowing or broadcast sowing in the soil of horizontal regions, and carrying out horizontal transverse row sowing on slopes; and (3) carrying out continuous planting for gradually reducing the content of the heavy metal copper in the soil till the content of the heavy metal copper in the soil reaches the soil quality standard through monitoring. The reaped plants are ground, dried in the sun and centralized burned, and the heavy metal copper can be extracted from ashes of the burned plants so as to convert pollutants to resources.

The invention provides a cultivation method for lawns of a sloping field type coastal heavy saline-alkali land. The cultivation method comprises the following steps of laying a salt discharge system, laying an irrigation system, carrying out raw soil preparation, planting festuca arundinacea, planting zoysia matrella, planting perennial ryegrass and carrying out planting post-management. The step of laying the salt discharge system comprises the following steps: digging salt discharge ditches properly along the altitude direction of a sloping field from the top of the sloping field to the base part of the sloping field, wherein the salt discharge ditches are 1m to 1.2m in depth; and laying salt discharge underground pipes in the ditches according to a principle that one pipe is arranged in one ditch. The step of laying the irrigation system comprises the following steps: laying the irrigation system at a position which is 75cm to 80cm in depth below the ground surface, wherein the laying space of irrigation water pipes is 5m; setting up one water spraying pipe every other 5m on each water pipe, wherein each water spraying pipe can extend to be a part which is 15cm to 20cm above the ground surface and a spraying nozzle capable of realizing 360-degree water spraying is mounted at a pipe opening of each water spraying pipe. The cultivation method for the lawns of the saline-alkali land, provided by the invention, has the advantages of rapid lawn formation speed, high lawn survival rate and uneasiness of degradation.