69results about How to "Reduce the difficulty of planting" patented technology

The invention provides a method for restoring heavy metal contaminated soil through an activating agent and microorganism reinforced plants. The method includes the following steps that firstly, the activating agent is added to the heavy metal contaminated soil, and the soil is tilled evenly and activated for 10 d to 20 d; secondly, complex microorganisms are inoculated in the activated soil, castor oil plants are planted for 1 to 2 periods, and one year is a period; thirdly, the castor oil plants planted in the second step are completely removed from the soil, the activating agent is added, and the soil is activated for 10 d to 20 d; fourthly, nightshade is planted in the soil activated in the third step for 2 to 3 periods, and one year is a period; fifthly, heavy metal in the castor oil plants obtained in the second step and the nightshade obtained in the third step is recycled; and sixthly, the first step to the fifth step are cycled till the content of the heavy metal in the soil reaches the standard. By the adoption of the method for restoring the heavy metal contaminated soil, the soil can be activated and improved, cost is low, contamination is small, and the heavy metal in the soil is efficiently removed.

The invention discloses a method for remediating heavy metal contaminated soil by utilizing charcoal and a chelating agent to strengthen plant. The method comprises the following steps of: (1) mixing heavy metal tailings substrate with a charcoal base fertilizer to prepare a culture medium; (2) planting plant in the culture medium; and (3) applying the chelating agent into the culture medium 60-75 days after planting the plants. The method is environmentally friendly, is low in cost, is free of secondary pollution, is strong in operability, and can promote fertility and quality improvement of tailings soil while reducing heavy metal contamination.

The invention provides a compound method for restoring soil polluted by heavy metal. The compound method comprises the following steps that bracketplant is planted in the soil polluted by the heavy metal, and the bracketplant is overall removed after 85-95 days; a mixture of biological carbon base fertilizer and heavy metal activated bacterium liquid is applied into the soil; sugarcane is planted in the soil polluted by the heavy metal, the bracketplant is continuously planted next spring, the bracketplant is overall removed after 85-95 days and the sugarcane is overall removed in August or September; a mixture of the biological carbon base fertilizer and the heavy metal activated bacterium liquid is applied into the soil and mixed evenly, and seasoning is conducted for 75-80 days; and the steps from the first step to the fifth step are executed circularly and repeatedly until the content of the heavy metal in the soil is up to the safety standard. According to the compound method, the heavy metal absorption efficiency of plants is improved and the soil remediation effect is good; in addition, the compound method has the characteristics of being friendly to the environment, free of secondary pollution, high in practicability and the like.

The invention discloses a method for repairing heavy metal pollution tailings with charcoal-based slow release fertilizer and imperata cylindrica. The method includes the following steps that according to the mass ratio, 1-5 parts of charcoal, 100 parts of polyurethane emulsion with the concentration being 40%-50%, 5-10 parts of starch and 150-300 parts of distilled water are mixed to prepare a coating solution; 40-60 parts of composite organic fertilizer particles are suspended into 10-20 parts of the prepared coating solution, and slow release coating treatment is conducted to obtain the charcoal-based slow release fertilizer; the prepared charcoal-based slow release fertilizer is mixed with the heavy metal pollution tailings; and the imperata cylindrica is planted into the tailings containing the charcoal-based slow release fertilizer. By the adoption of the method, the treating effect of the heavy metal pollution tailings is good, the method is environmentally friendly, cost is low, and pollution is small; and heavy metal pollution is reduced, and meanwhile cycling utilization of recourses and lasting effect playing of fertilizer nutrients can be achieved.

The invention provides a restoration method for industrial waste land soil heavy metal contamination. Charcoal base fertilizer and a microorganism complex microbial inoculant are applied to heavy metal contaminated soil, and the charcoal base fertilizer, the microorganism complex microbial inoculant and the soil are evenly mixed and then aged; after ageing is over, a willow is planted, and the willow is overall removed after a certain period; after the willow is overall removed, charcoal base fertilizer and a microorganism complex microbial inoculant are applied to the soil where the willow is planted again, and the charcoal base fertilizer, the microorganism complex microbial inoculant and the soil are evenly mixed and aged; after ageing restoration is over, ricinus communis is planted, and the ricinus communis is overall removed after ricinus communis fruits are harvested; and the steps are executed cyclically and repeatedly until the content of heavy metal in the soil reaches the safety standard. The restoration method is good in soil governing effect, fast in effect taking, short in time, capable of beautifying the environment while the heavy metal contaminated soil is governed and high in practicability.

The invention provides a full-hydraulic and self-propelled automatic seeding device of a sugarcane planter. The automatic seeding device comprises a seeding box, a vibrating eccentric wheel, a tensioning wheel, a transmitting chain, a reseeding device and a synchronous hydraulic system, wherein the synchronous hydraulic system comprises a hydraulic variable pump, a hydraulic differential lock, a driving system I, a driving system II, a seeding device hydraulic motor I and a seeding device hydraulic motor II; the hydraulic variable pump is connected with the hydraulic differential lock; the hydraulic differential lock is connected with the driving system I and the driving system II respectively; the driving system I is connected with the seeding device hydraulic motor I; the driving system II is connected with the seeding device hydraulic motor II. The full-hydraulic and self-propelled automatic seeding device lowers the planting difficulty, enhances the working efficiency, and works according to the healthy seeding specification (40-50cm/per plant).

The invention relates to the technical field of vacuum electronic devices, and discloses a double-grid control type cold cathode electron gun and a preparation method thereof. In accordance with the present invention, A simple, a new type of electron gun with long service life and excellent performance is provided, the cold cathode is used as the emission source of the vacuum electronic device, Asurface of the cold cathode is arrayed by a cathode grid, which can effectively weaken the electrostatic shielding effect of electron emitted by large area cold cathode material, the emission currentof large area cold cathode material is increased, At the same time, the surface of the cathode substrate is designed as a whole plane so as to not only avoid machining burr and other problems, improveedge effect and spark phenomenon, but also make the electric field distribution on the surface of cathode substrate flat, which is conducive to improving the uniformity of emission current density and achieving the purpose of large current emission, so the electron gun can be used in vacuum electron radiation components or devices that generate large current and high density electron beam.

The invention provides a method for restoring soil polluted by heavy metal through a combination of magnetotactic bacteria and plants. The magnetotactic bacteria and the soil polluted by the heavy metal are mixed and irrigated, and magnetic fields are arranged on the soil polluted by the heavy metal to collect heavy metal polluted soil containing the magnetotactic bacteria, drip washing of the soil polluted by the heave metal is conducted and backfill is conducted; bamboo willows and crimson leafbeet are planted on the soil polluted by the heavy metal at the same time, and the crimson leafbeet is removed after 50-60 days; then crimson leafbeet is planted again, and the crimson leafbeet is removed after 50-60 days; the steps of planting and removal of the crimson leafbeet are repeated; and the bamboo willows and the crimson leafbeet are removed at the same time 1.5-2.5 years later, and the steps are executed circularly and repeatedly until the content of the heavy metal in the soil is up to the safety standard. Compared with the prior art, the magnetotactic bacteria are easy to collect, the growth cycle of the bamboo willows is short and the absorption efficiency of the heavy metal is high. The crimson leafbeet is easy to grow and has a hyperaccumulation ability of cadmium. The method is capable of restoring the soil which is polluted by various heavy metals at the same time, and free of secondary pollution to the soil.

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 relates to the technical field of soil pollution treatment and especially a heavy metal polluted soil restoration planting method. In the method, the planting mode for plants for restoration of the heavy metal polluted soil is completely changed, wherein the plants for restoration are not pre-cultured in a greenhouse and can be directly planted into the heavy metal polluted soil; themethod is free of requirement on concentration of heavy metal ions in the soil and greatly reduces planting difficulty. Heavy metal ions in the lower layer are effectively isolated by covering an asbestos fiber fabric to form an isolation layer; microorganisms are added to soil to reduce the content of metal ions in soil; the soil is watered and then is covered with a film to complex and settle the metal ions; finally, an absorption layer of attapulgite powder can absorb the metal ions for preventing secondary pollution.

The invention relates to the technical field of soil pollution treatment and especially provides a microbial restoration method for heavy metal polluted soil. In the method, the planting mode for plants for restoration of the heavy metal polluted soil is completely changed, wherein the plants for restoration are not pre-cultured in a greenhouse and can be directly planted into the heavy metal polluted soil; the method is free of requirement on concentration of heavy metal ions in the soil and greatly reduces planting difficulty. Heavy metal ions in the lower layer are effectively isolated by covering an asbestos fiber fabric to form an isolation layer; microorganisms are added to soil to reduce the content of metal ions in soil; the soil is watered and then is covered with a film to complex and settle the metal ions; finally, an absorption layer of attapulgite powder can absorb the metal ions for preventing secondary pollution.

The invention relates to the technical field of contaminated soil control, in particular to a mixing remediation method for heavy metal contaminated soil. According to the mixing remediation method, an existing planting mode for heavy metal contaminated plant remediation is completely changed, remediation plants do not need to be cultivated in advance through a greenhouse and can be directly planted into the heavy metal contaminated soil, no requirement for the concentration of heavy metal ions in the soil exists, and thus the panting difficulty is greatly reduced; and an asbestos fiber clothis covered to form an isolation layer to effectively isolate the lower-layer heavy metal ions, the content of the heavy metal ions in the soil is decreased by adding a heavy metal treating agent intothe soil, through watering and film covering, the metal ions are subjected to complexing settlement, and the metal ions are absorbed through an absorption layer of concave-and-convex rod powder to prevent secondary contamination.

The invention discloses a mulching-film soilless cultivation method of wuta-tsai. The method is characterized in that a mulching film technology and a soilless cultivation technology are applied to the planting of wuta-tsai. The method comprises the steps of preparing soilless organic substrate, placing the prepared soilless organic substrate in a cultivation pot, covering the cultivation pot with an ultramicro mulching film, transferring wuta-tsai seedlings into the substrate, and carrying out conventional watering and insect and disease prevention. According to the mulching-film soilless cultivation method of the wuta-tsai, the planting process is simplified, the planting difficulty and production cost are reduced, water and fertilizer are saved, the yield and quality of wuta-tsai can be guaranteed, and the applicability is wide.

The invention discloses a corn and soybean strip-shaped compound planting full-plant-protection spraying system. The system comprises a power machine and a spraying mechanism arranged at the front endof the power machine, and the spraying mechanism comprises a parallelogram lifting adjusting mechanism, a cantilever swing adjusting mechanism, a three-dimensional turnover mechanism, a middle pesticide spraying support, a check curtain mechanism and a spray head system. The spraying mechanism can be lifted or lowered by controlling the parallelogram lifting adjusting mechanism, and meanwhile thespraying mechanism is suitable for pesticide application operation on short straws and suitable for pesticide application operation on the high straws and the short straws at the same time; when spraying operation is carried out in the earlier stage of corn and soybean interplanting, a cantilever is unfolded, lower spray head sets on the two sides are used for spraying, and when spraying operation is carried out in the later stage of corn and soybean interplanting, the cantilever is folded, the three-dimensional turnover mechanism and three-dimensional turnover spray head sets on the two sides are used for spraying corns, and a spray head set in the middle is used for spraying soybeans; and during transportation or walking, the cantilever and a upper cross rod are folded to be perpendicular to a lifting frame simultaneously.

The purpose of the invention is to provide a seedling tray which is capable of accelerating growth rates of products and improving survival rates. In order to achieve the effects, the seedling tray provided by the invention comprises a rectangular tray body; a plurality of transverse guide ditches and a plurality of longitudinal guide ditches, which are mutually interlaced, are provided at the bottom of the tray body; and a water outlet is provided at each intersection of the transverse guide ditches and the longitudinal guide ditches. By adopting the technical scheme, the seedling tray provided by the invention is capable of ensuring that seedlings in the seedling tray receive sufficient water; and moreover, the condition of too much or too little watering during the process of initial breeding can be avoided so as to reduce planting difficulty of farmers and improve survival rates of seedlings.

The invention relates to the technical field of agricultural planting, and particularly relates to a method for planting aloe in a desert area. The method comprises the following steps: selecting an aloe plant which robustly grows without disease, cutting an aloe leaf into blocks, uniformly and completely applying a yellow vaseline layer to the outer layers of the aloe blocks to carry out intermittent nonionic radiation treatment, burying in a root growth promoting matrix to promote root growth; performing intermittent nonionic radiation treatment once again; and finally planting in desert planting holes, laying modified peach gum particles at the bottom of each planting hole during planting, laying honeycomb powder on the modified peach gum particles, and thoroughly watering every 60-65 days. By adopting the method, aloe is planted in desert to effectively improve the desert environment, the aloe planting survival rate is 98 percent or above, and the content of aloin in aloe can be effectively improved when the aloe is planted in desert.