42results about How to "Resistant to barrenness" patented technology

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 discloses a biological treatment method for waste mud in petroleum and natural gas exploration drilling work, which is characterized by comprising the following steps of: a, forming a microbial treatment layer, namely inoculating special microbial strains to the waste mud in a weight ratio of 3-5: 100, mixing the strains and the waste mud uniformly, stirring the mixture and natural soil with water content of 10 to 10 percent and grain diameter of less than 0.5 centimeter uniformly according to the density condition of the waste mud in a following mode to form the microbial treatment layer, adding the natural soil in an amount which is 2.5 to 3 times that of the waste mud into the waste mud with density of 1 to 1.5kg / L, adding the natural soil in an amount which is 2 to 2.5 times that of the waste mud into the waste mud with density of 1.5 to 2.5kg / L, and controlling the water content of the microbial treatment layer to be between 25 and 30 percent; b, treating the soil; and c, treating plants. The method can solve the technical problem that effusion enters underground water to pollute a water source because the natural soil with high water content and large grain diameter is easily scoured by hard rain under the condition that pollutants in a pretreatment mixture are not yet effectively degraded in the prior art.

The invention discloses a method for reclaiming heavy metal-polluted soil. In the method, ambary is grown in the soil polluted by the heavy metal. According to the invention, a fiber crop ambary with the characteristics of heavy metal resistance, barrenness, large biomass, robust roots and the like is used in the method, and the purposes of reclamation, water and soil maintenance, heavy metal fixing and the like can be achieved by planting the ambary on the Multi-metal polluted soil. The method of the invention has economic value and landscape value, and is suitable for popularizing in the heavy metal-polluted farmland and waste land near the mine.

The invention provides a cultivation method of mixed-lawn, providing the cultivation method of novel mixed-lawn, which solves the problems of high maintenance cost and high consumption of the water, nutrient and energy for the cold season lawn, as well as the problems of short green stage, poor greening effect and difficult cultivation for the warm season lawn through the mixed-lawn method of the stalked meadow grass which is the cold season lawn grass and the zoysia which is the warm season lawn grass, and the process of preparing, snowing, maintaining the seedling, pruning, managing the finished lawn and the like.

The invention relates to a method for catalytic conversion preparation of a hexahydric alcohol from jerusalem artichoke as a raw material. The method is characterized in that a raw material of natural biomass jerusalem artichoke (mainly comprising fructose-based polysaccharide carbohydrates) undergoes a reaction at a temperature above 20 DEG C under hydrogen pressure of 1 to 13MPa in the presence of water as a solvent and a catalyst or a mixed catalyst for at least 5 minutes, wherein the catalyst comprises acidic carriers and one or more of transition metals of iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, iridium and platinum loaded on the acidic carriers; and the mixed catalyst comprises solid acids and a metal hydrogenation catalyst comprising carriers and one or more of transition metals of iron, cobalt, nickel, copper, ruthenium, rhodium, palladium, iridium and platinum loaded on the carriers. Through one-step catalytic conversion, high-efficiency, high-selectivity and high-yield preparation of a hexahydric alcohol such as mannitol and sorbitol from jerusalem artichoke as a raw material is realized.

The invention discloses a method for treating waste sludge in oil and natural gas exploration drilling operations, which relates to the technical field of pollution treatment of oil and natural gas exploration drilling. The method comprises the following steps: a. microbian treatment; b. soil treatment; c. and plant treatment. The method treats the waste sludge in a biological, soil and plant combined recondition mode, effectively reduces COD, Oil and other indices in the drilling operation waste by utilizing the actions of microbian strains and degrades most organic substances into simple inorganic substances, thereby removing pollutants from the sludge and achieving the goal of harmlessness.

The invention discloses a mixed-sowing method of forage grass in a high altitude area of the Three Gorges reservoir area, comprising soil preparation before sowing, mixed sowing and fertilizer application, wherein the mixed sowing means mixed sowing of orchard grass seeds, trifolium repens seeds and alfalfa seeds, and specifically comprises the following steps of: performing row-spaced drilling on the orchard grass seeds and the alfalfa seeds, with row spacing of 0.3m; and uniformly sowing the trifolium repens seeds among the rows of the orchard grass seeds and the alfalfa seeds, wherein the dosage ratio of the orchard grass seeds to the trifolium repens seeds to the alfalfa seeds is 1: (1 to 1.6): (1 to 1.6), in parts by weight. The leguminous forage grass and gramineous forage grass selected for the mixed-sowing of forage grass disclosed by the invention are featured with heat resistance, drought resistance and leanness resistance, and are mixed-sowed with each other, thus adequately utilizing light energy and increasing photosynthates; additionally, the leguminous forage grass has a high protein content and the rhizobia of the leguminous forage grass has a function of nitrogen fixation, thus remarkably increasing the yield of the forage grass, and improving the quality of the forage grass and soil fertility, so that the advantages of the leguminous forage grass are very prominent. The method disclosed by the invention is simple and convenient, and simple in operation; and the artificial pasture established by the method has the characteristics of heat resistance, drought resistance and leanness resistance.

The invention relates to a method for ecological restoration of a mountain, which comprises the following steps: (1) forming holes on a rocky mountain; (2) filling cement mortar (1 : 3) in the holes; (3) inserting foundation steel bars into the cement in the holes and allowing the foundation steel bars to protruding out of the rocky mountain at a certain length, and pouring a cement frame or not with the foundation steel bars as center; (4) laying a vertically consecutive planting soil layer along the rock slope of the rocky mountain, wherein the planting soil layer comprises plant growth bags stacked along the rock slope and filling soil for filling gaps; (5) coating a steel mesh on the outer surface of the planting soil layer, wherein the steel mesh is fixedly connected with the foundation steel bars to fix the plant growth bags and is formed of a plurality of steel wires by crossing each other; and (6) watering and curing the plant growth bags. The method provided by the invention perfectly combines plants, soil and the mountain; and not only has rapid and good greening effect and effectively solves the problems of mountain landslide, collapse and the like, but also forms a stable long-life plant community, achieving an original ecological effect.

The invention relates to the technical field of soil remediation, and particularly relates to a method for remediating cadmium pollution of soil with red-spotted stonecrop. The method comprises the following steps: step A: applying a biomass charcoal improver to the polluted soil; step B: planting red-spotted stonecrop in the polluted soil; step C: after growing for 60-150 days, cutting overground plant parts of the red-spotted stonecrop and then applying a nutrient solution; and step D: after repeating the step C for 1-4 times, removing the whole red-spotted stonecrop. The method provided by the invention uses the red-spotted stonecrop and the biomass charcoal improver for joint remediation; the biomass charcoal improver provides a relatively good growth environment for the red-spotted stonecrop, plays a role of promoting growth of roots of the red-spotted stonecrop, and enhances vitality of the red-spotted stonecrop; the red-spotted stonecrop can enrich the heavy metal cadmium efficiently; the content of cadmium in the polluted soil can be reduced greatly under double action of the red-spotted stonecrop and the biomass charcoal improver; the method can achieve the purpose of complete remediation after three to six years and has good social and economic benefits and popularization and application values.

The invention discloses a phytoremediation method for eliminating manganese toxicity in soil. According to the method, wild Celosia argentea Linn. is planted into acidic soil with manganese toxicity, active manganese in the soil is absorbed by the aid of the superstrong enrichment capacity of the Celosia argentea Linn. on the manganese, and excessive manganese in the soil is removed by harvesting the overground part of the Celosia argentea Linn.. The phytoremediation method for eliminating the manganese toxicity in the soil has the advantages of low cost, simplicity in operation, low energy consumption, easiness in maintenance, high removal rate, environment beautification effect and the like, and can be applied to restoration of soil with manganese toxicity in the South of China. The active manganese of the restored soil is remarkably reduced and the manganese toxicity is obviously relieved or eliminated.

The invention provides a method for remedying cadmium-contaminated soil through inter-planting of cadmium accumulator plants and fruit trees. The method comprises the steps that cadmium accumulator Sedum Spectabile Boreau and low-cadmium-accumulation commercial crop citruses are selected and inter-planted in the cadmium-contaminated soil, and a large quantity of cadmium in the soil is absorbed bya root system of the Sedum Spectabile Boreau and is transferred over the ground; when the Sedum Spectabile Boreau reaches 40-50cm, the overground parts of the Sedum Spectabile Boreau are removed fromthe cadmium-contaminated soil, so that the cadmium in the cadmium-contaminated soil is removed; the cadmium content of the harvested parts of the screened-out low-cadmium-accumulation commercial cropcitruses is lower than the relevant standard, so that the purpose of remedying the cadmium-contaminated soil during production is realized; after harvesting, the Sedum Spectabile Boreau can continue to grow to absorb cadmium in the soil, and the overgroud parts can be cut again to remedy the cadmium-contaminated soil when the Sedum Spectabile Boreau grows to 40-50 cm; and the citruses perennial crops and can continue to grow to be harvested after being harvested. The method is reasonable in design, easy to operate, low in cost and capable of being used for remedying the cadmium-contaminated soil, and has good environmental, economic and social benefits.

The invention relates to a method for repairing nitrobenzene compound contaminated soil by utilizing flax, which comprises the following steps: firstly, mixing and homogenizing soil contaminated by red water and a mixture of sierozem and municipal sewage sludge pro rata to obtain mixed soil; secondly, adding wheat bran in the mixed soil; admixing ferrous sulfate, so that the pH value of the mixed soil is neutral; and then cultivating the flax in the open on the mixed soil; and thirdly, managing the flax in a conventional planting manner and cradling the flax when the growth period of the flax is over. The method is economical and green, is free from secondary pollution, is easy to accept by the masses, can be suitable for the large-area nitrobenzene compound contaminated soil and also can achieve the purpose of producing while repairing.

The invention discloses a breeding method of Shangmai 5226, a dry-farming variety in mountainous areas. Shangmai 8928 is selected as the female parent, and 8788 is planted as the male parent for hybridization. The combination number is 97(5), and the offspring are treated by the pedigree method; 97(5)-22 -6-1 and 97(5)-22-6-2 are basically the same in traits and characteristics, weak winter resistance, plant height 85cm, white grains, good quality, disease resistance, drought and cold resistance, and good yellow fall. 97(5)-22-6-1 participated in the regional test, and multiplied and tested.

The invention discloses a peach planting method and relates to the technical field of fruit tree planting. The peach planting method is used for solving the problems, i.e., high disease rate, low fruit sugar content, large fruit quality difference and low yield per mu of the existing peach planting methods. The method comprises the steps: (1) soil amendment: performing green manuring, soil deep-plowing and high-compartment wide-furrow digging; (2) nursery-grown plant field planting: selecting healthy young seedlings, performing antibacterial treatment, and then, performing dibbling; (3) fertilization management: performing basal fertilizer application once, topdressing thrice and irrigation; (4) pruning reshaping: adopting Y-shaped planting for peaches; and (5) disease and insect pest control: performing garden cleaning in winter, pruning to clear out diseased branches and leaves, and performing warm keeping and control. Compared with the prior art, the method has the advantages that by adopting dwarf close planting and Y-shaped pruning reshaping, the quantity of planting of peaches per mu and the lighting property and uniformity of upper and lower branches are improved, and thus,the sugar content of peach fruits of all positions is improved; and meanwhile, the lighting of each position of the peaches is consistent, thus, the saccharide accumulation and nutrition level of thefruits are equivalent, the workload of fruit grading can be reduced, and the labor cost is reduced.

The invention discloses a method for remediating cadmium contaminated farmland soil by means of sedum spetabiles. The method for remediating the cadmium contaminated farmland soil by means of the sedum spetabiles comprises the steps that (1) the sedum spetabiles is planted in the cadmium contaminated farmland soil; and (2) the overground plant parts of the sedum spetabiles are cut and removed, and then remediation of the cadmium contaminated farmland soil is completed. According to the method for remediating the cadmium contaminated farmland soil by means of the sedum spetabiles, the sedum spetabiles is planted in the cadmium contaminated farmland soil and rapidly survives and grows in the soil, the root system of the sedum spetabiles absorbs cadmium in the soil and transfers the cadmium to the overground plant parts of the sedum spetabiles by means of the capacity to gather the heavy metal cadmium in the soil of the sedum spetabiles, and thus the purposes of reducing the content of the heavy metal cadmium in the soil and remediating the cadmium contaminated farmland soil are achieved.

The invention discloses a method and activating agent for restoring cadmium and / or lead contaminated soil through Hylotelephium erythrostictum and application of the activating agent. According to themethod, the Hylotelephium erythrostictum is planted on the cadmium and / or lead contaminated soil, and water-soluble carboxyethyl chitosan is applied into the contaminated soil to activate heavy metalcadmium and / or lead; and the Hylotelephium erythrostictum survives and grows, the overground part, absorbing the heavy metal cadmium and / or lead, of the Hylotelephium erythrostictum is reaped regularly, the heavy metal cadmium and lead in the soil can be effectively removed, and thus the restoring efficiency of the Hylotelephium erythrostictum to the cadmium and / or lead contaminated soil is greatly improved, wherein the activating agent is the water-soluble carboxyethyl chitosan. The method and the activating agent have the advantages that the restoring efficiency of the Hylotelephium erythrostictum is improved, the cost is low, operation is easy and convenient, biodegradability is achieved, and secondary pollution is avoided.

The invention discloses a biological treatment method for waste mud in petroleum and natural gas exploration drilling work, which is characterized by comprising the following steps of: a, forming a microbial treatment layer, namely inoculating special microbial strains to the waste mud in a weight ratio of 3-5: 100, mixing the strains and the waste mud uniformly, stirring the mixture and natural soil with water content of 10 to 10 percent and grain diameter of less than 0.5 centimeter uniformly according to the density condition of the waste mud in a following mode to form the microbial treatment layer, adding the natural soil in an amount which is 2.5 to 3 times that of the waste mud into the waste mud with density of 1 to 1.5kg / L, adding the natural soil in an amount which is 2 to 2.5 times that of the waste mud into the waste mud with density of 1.5 to 2.5kg / L, and controlling the water content of the microbial treatment layer to be between 25 and 30 percent; b, treating the soil; and c, treating plants. The method can solve the technical problem that effusion enters underground water to pollute a water source because the natural soil with high water content and large grain diameter is easily scoured by hard rain under the condition that pollutants in a pretreatment mixture are not yet effectively degraded in the prior art.

The invention discloses a method for treating waste sludge in oil and natural gas exploration drilling operations, which relates to the technical field of pollution treatment of oil and natural gas exploration drilling. The method comprises the following steps: a. microbian treatment; b. soil treatment; c. and plant treatment. The method treats the waste sludge in a biological, soil and plant combined recondition mode, effectively reduces COD, Oil and other indices in the drilling operation waste by utilizing the actions of microbian strains and degrades most organic substances into simple inorganic substances, thereby removing pollutants from the sludge and achieving the goal of harmlessness.

A method for enclose-planting sea-buckthorn trees and planting pasture on desert grassland is realized by cultivation of enclose-planting sea-buckthorn seedlings, preparation of enclose-planting land and planting of gesture on an enclose-planting land and is characterized in that seedlings are cultivated in a hard-branch cuttage method; cuttings are soaked in indolebutyric acid solution and then soaked in clean water, thus survival rate of seedlings is improved; after age, height, ground diameter and main roots reach at the specified standards, seedlings with more fibrous roots serve as enclose-planting sea-buckthorn seedlings; the desert grassland is continuously arranged to be square lands which are connected according to the diagonal lines, thus each enclose-planting land has four triangular lands; the enclose-planting land is dug along the edge lines and the diagonal lines to form trenches of enclose-planting sea-buckthorn trees and then the sea-buckthorn seedlings are enclose-planted; after survival, the enclose-planted sea-buckthorn seedlings form interconnected triangular forest belts for prevention and stabilization of sand; hollow triangular lands are protected and serve as effective pasture planting lands. The invention creates a sustainable environmental target for recovering of vegetation, prevention and stabilization of sands, treatment of desertification, breeding pasture for desert grassland and animal husbandry production.

The invention discloses a grafting method of paliurus ramosissimus. The grafting method comprises a grafting method, wherein the grafting method comprises the following steps: a. selecting rosa chinensis with growth age of 1-2 years and developed root system as a stock; b. selecting paliurus ramosissimus branch as scion, wherein the scion comprises at least two buds; c. cutting a first shield-shaped notch with 1-2cm on the sunny slope of the stock, wherein the inclination angel of the first shield-shaped notch is 30-40 degrees, cutting a second shield-shaped notch on the scion branch, wherein the second shield-shaped notch is arranged at the lower end of the bud, and the first shield-shaped notch is corresponding to the second shield-shaped notch; d. connecting the second shield-shaped notch of the scion and the first shield-shaped notch of the stock, covering a plastic band on the connecting part; e. after grafting for 10-20 days, scissoring the telome of the stock and unfastening the plastic band after the tender shoot grows on the scion. The paliurus ramosissimus cultivated by the grafting method of the paliurus ramosissimus disclosed by the invention is evergreen and indeciduate.

The invention discloses a sugarcane field planting and breeding combined method. The sugarcane field planting and breeding combined method comprises the following steps of sowing sticktight between sugarcane rows in a sugarcane field, enriching heavy metals and organic pollutants by utilizing roots of the sticktight to remove the heavy metals and the organic pollutants, and meanwhile, inhibiting growth of other weeds by interplanting the sticktight; building an ostrich breeding base beside the sugarcane field for breeding ostriches, and breeding the ostriches with sugarcane waste generated bysugarcane planting and the sticktight, wherein the waste generated by sugarcane planting comprises sugarcane stems, sugarcane leaves, sugarcane tail tips and the like; and in addition, building a fishpond beside the ostrich breeding base for breeding fishes, directly diluting excrement of the ostriches in the ostrich breeding base with water, then enabling a mixture to flow into the fishpond for fish feeding, and using water in the fishpond for drip irrigation of the sugarcane field. By means of the method, the sugarcane and the sticktight are planted, the ostriches and the fishes are bred, the sugarcane field is repaired and improved, waste generated by sugarcane planting and ostrich and fish breeding is fully utilized, low input and high yield of the sugarcane field can be achieved, andthe ecological concept of cyclic utilization is met.

The invention discloses a grafting method of paliurus ramosissimus. The grafting method comprises a grafting method, wherein the grafting method comprises the following steps: a. selecting rosa chinensis with growth age of 1-2 years and developed root system as a stock; b. selecting paliurus ramosissimus branch as scion, wherein the scion comprises at least two buds; c. cutting a first shield-shaped notch with 1-2cm on the sunny slope of the stock, wherein the inclination angel of the first shield-shaped notch is 30-40 degrees, cutting a second shield-shaped notch on the scion branch, wherein the second shield-shaped notch is arranged at the lower end of the bud, and the first shield-shaped notch is corresponding to the second shield-shaped notch; d. connecting the second shield-shaped notch of the scion and the first shield-shaped notch of the stock, covering a plastic band on the connecting part; e. after grafting for 10-20 days, scissoring the telome of the stock and unfastening the plastic band after the tender shoot grows on the scion. The paliurus ramosissimus cultivated by the grafting method of the paliurus ramosissimus disclosed by the invention is evergreen and indeciduate.

The invention relates to a method for repairing soil polluted by an aniline compound by utilizing flax, which comprises the following steps: (1) blending ferrous sulfate into original soil polluted by the aniline compound per kilogram to enable the pH of the original polluted soil to be neutral; (2) evenly mixing the soil polluted by the aniline compound with the mixture of sierozem and urban dewatered sludge in proportion to obtain mixed soil; (3) adding wheat bran to the mixed soil, and then, cultivating flax on the mixed soil in an open-air method; and (4) carrying out management on the flax in a conventional planting mode, and after the growth period of the flax comes to an end, carrying out mowing on the flax. The method for repairing the soil polluted by the aniline compound by utilizing the flax has low cost, small environment perturbation and no secondary pollution, is capable of increasing soil organic matter and soil fertility, is capable of enabling the polluted soil to be properly repaired after at least one growth period of the plant comes to the end, and is capable of achieving the goal of producing while repairing.

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 discloses a river bank ecological restoration device suitable for characteristics of a mountain river in the technical field of river bank ecological restoration. The river bank ecological restoration device suitable for the characteristics of the mountain river comprises vertical columns arranged on a slope surface of a river bank, wherein the vertical columns are arranged in multiple layers from top to bottom along the slope surface, a stone blocking rope net is connected between every two adjacent vertical columns in the same layer, gravel protection feet are piled on the lower sides of the vertical columns on the lowermost layer, gravel foundation layers are piled between the vertically adjacent stone blocking rope nets, soil layers are laid on the tops of the gravel foundation layers and the gravel protection feet, waterfront plant layers are planted on the soil layers, hygrophyte layers are planted on the gravel protection feet and a river channel surface, herbaceous plants and arbors are planted on the upper part of the river bank. According to the river bank ecological restoration device suitable for the characteristics of the mountain river, the mode that the vertical columns and the stone blocking rope nets are combined is adopted, and the gravel foundation layers are intercepted and placed; compared with the mode that a gabion is adopted in the prior art, the use environment is more flexible, operation is easier, and the river bank ecological restoration device is especially suitable for the conditions that the mountain river bank is large in curvature and too many in bends.

The invention discloses a chelating agent washed-off soil improvement method which includes the steps: planting aquatic plants into chelating agent washed-off soil; applying fertilizers for cultivation to improve chelating agent washed-off soil. The aquatic plants are alligator alternanthera herbs and / or myriophyllum spicatum. The alligator alternanthera herbs and / or myriophyllum spicatum are used for improving the chelating agent washed-off soil for the first time, degradation activity of enzyme and microorganisms in the restorable soil can be improved, chelating agents remaining in the soil can be biologically degraded, toxicity of the soil is remarkably reduced, the problem of difficulty in growth and survival of plants in the chelating agent washed-off soil is solved, and the method has the advantages of low cost, high practicability, good improvement effect and the like.

The invention provides a cultivation method of mixed-lawn, providing the cultivation method of novel mixed-lawn, which solves the problems of high maintenance cost and high consumption of the water, nutrient and energy for the cold season lawn, as well as the problems of short green stage, poor greening effect and difficult cultivation for the warm season lawn through the mixed-lawn method of thestalked meadow grass which is the cold season lawn grass and the zoysia which is the warm season lawn grass, and the process of preparing, snowing, maintaining the seedling, pruning, managing the finished lawn and the like.

The invention discloses a method for promoting economic crop ricinus communis to repair copper and cadmium combined polluted soil. The method comprises the following steps: applying a nitrogen fertilizer and a potassium fertilizer which are used as base fertilizers into the naturally air-dried copper and cadmium combined polluted soil, and simultaneously applying a phosphate fertilizer into the naturally air-dried copper and cadmium combined polluted soil; the method comprises the following steps: soaking castor seeds in an ethanol solution and sterilized distilled water in sequence, and then sowing the castor seeds in mixed soil for culture; applying an ethylenediamine disuccinic acid solution into the soil 20-30 days after the castor seeds grow two leaves, and continuing planting until harvesting. Through the combined action of the phosphate fertilizer and the EDDS, the absorption of the castor to copper and cadmium is promoted, on one hand, the phosphate fertilizer can relieve heavy metal stress, promote plant growth and promote transfer of heavy metal to the overground part, and on the other hand, the EDDS activates copper and cadmium in soil, the absorption of a root system to copper and cadmium is increased, and the metal concentration of the overground part is increased. The phosphate fertilizer and EDDS are jointly applied, so that the biomass and copper-cadmium concentration of the overground part of the plant are increased, and the phytoremediation efficiency is enhanced. The operation is simple and easy, and the repairing time is shortened.

The invention relates to a method for repairing nitrobenzene compound contaminated soil by utilizing flax, which comprises the following steps: firstly, mixing and homogenizing soil contaminated by red water and a mixture of sierozem and municipal sewage sludge pro rata to obtain mixed soil; secondly, adding wheat bran in the mixed soil; admixing ferrous sulfate, so that the pH value of the mixed soil is neutral; and then cultivating the flax in the open on the mixed soil; and thirdly, managing the flax in a conventional planting manner and cradling the flax when the growth period of the flax is over. The method is economical and green, is free from secondary pollution, is easy to accept by the masses, can be suitable for the large-area nitrobenzene compound contaminated soil and also can achieve the purpose of producing while repairing.