35results about How to "Reduce eutrophication pollution" patented technology

The invention discloses compound feed for snakehead fishes, aiming at providing compound feed for snakehead fishes having the advantages of low feed coefficient, balanced and comprehensive nutrition, strong palatability and high subaqueous stability. The invention is prepared from the following ingredients by weight percent: 20-29% of steam fish meal, 17-19% of direct firing fish meal, 21-26% of flour, 10.5-21% of soybean meal, 6-8% of peanut bran, 1-2% of imported liver powder, 0-1% of wheat gluten meal, 0.75-1% of soybean oil, 0.75-1% of phospholipid oil, 1.5-3% of fish oil, 0.8-1.2% of monocalcium phosphate, 0.8-1.2% of powdered zeolite and the balance of additives; and the additives contain complex vitamin, compound minerals, Vc organic phosphate, choline chloride, salt, mildew preventive and oxidation preventive. The compound feed for snakehead fishes can be widely applied to the field of snakehead fish aquaculture.

The invention discloses a eucalyptus ecological fertilizer containing Mn and Fe elements and a fertilizing method. The eucalyptus ecological fertilizer containing the Mn and Fe elements is prepared by mixing inorganic nutrients, organic fertilizers and a bonder, and includes following effective ingredients in mass percents of: 7-20 percent of the inorganic nutrients, 4-15 percent of P2O5, 4-20 percent of K2O4, 0.05-0.2 percent of B, 0.05-0.1 percent of Zn, 0.01-0.05 percent of Cu, 0.01-0.2 percent of Mn, 0.01-0.2 percent of Fe, 5-25 percent of organic matters and 0.15-5 percent of the bonder. According to the eucalyptus ecological fertilizer disclosed by the invention, major elements, secondary elements and trace elements are matched according to a reasonable proportion, and a property amount of the organic fertilizers are added, so that not only can the nutrient requirements of the eucalyptus growth be met, the use ratio of the fertilizer is improved, and the wastage rate of the fertilizer is decreased, but also the stress resistance and the lodging resistance of eucalyptus are enhanced, the capacity of resisting natural calamities (such as typhoon and frost), the loss is reduced and the economic benefit is improved.

The invention discloses a water purifying device of regenerated water supplied lakes and a construction method thereof. The water purifying device comprises a water purifying box and a mud adsorption device. A retaining wall is arranged on the water purifying box. The top end of the retaining wall is provided with a water baffle plate. A purifying cavity, a water storage cavity, and a mud filtering cavity are arranged in the water purifying box. The bottom end of the retaining wall is provided with a water gate. The mud adsorption device comprises a dredging pipeline, a baffling device, and a water suction pump. The baffling device is fixedly connected to the end part of the dredging pipeline. The construction method comprises the following steps: (1) carrying out setting-out survey; (2) digging a ground pit; (3) installing a frame support; (4) installing pipe channels; (5) pouring concrete; (6) installing a water purifying box; (7) installing a mud adsorption device; and (8) performing trial run of water purification. The construction steps are simple, the dam is protected, the construction efficiency of water purifying device is improved, and the water purifying device is suitable for lakes with different sizes.

The invention discloses a saline-alkali soil drainage, storage, purifying, and recycling system based on a sponge city, comprising a purifying water storage channel, a saline-alkali water purifying pond, and a biological filtering pond; the purifying water storage channel comprises a channel body, wherein the top part of the channel body is provided with a slope, and slope plants are planted on the slope; the channel body is internally and orderly provided with a zeolite filler layer, a geotechnical cloth, a planting soil layer and a salt excretion plant; the bottom part of the zeolite filler layer is paved with a water collecting pipe; the saline-alkali water purifying plants are planted in the saline-alkali water purifying pond, and a plant floating block is arranged in the saline-alkali water purifying pond, and the bottom part of the plant floating block is provided with a mesh bag; the top part of the biological filtering pond is provided with a mixer with a cover, and a biological filler is arranged in the filler biological filtering pond. According to the invention, the concept of sponge city is infused to a water circle of the land around the city, the rainwater storage, purification and use of saline-alkali land is contained in the water cycle of the whole sponge city, thus the system is good for constructing a more comprehensive urban sponge body, and providing a new concept for governing the geological pollution of people.

The invention discloses a pesticidal controlled-release fertilizer special for eucalyptus, which is composed of the following components in parts by weight: 250-450 parts of urea, 50-150 parts of diammonium phosphate, 100-300 parts of calcium superphosphate, 100-300 parts of potassium chloride, 1-5 parts of zinc sulfate, 1-5 parts of copper sulfate, 1-5 parts of borax, 10-20 parts of sodium humate, 10-20 parts of diatomaceous earth zeolite mixture, 10-20 parts of urea-formaldehyde resin, and 10-20 parts of carbosulfan and tebufenozide pesticidal mixture. According to the invention, the carbofuran and tebufenozide mixture is added into the fertilizer special for eucalyptus for the first time; the proportions of ingredients of the mixture are initially discussed. The invention further discloses a preparation method of the pesticidal controlled-release fertilizer special for eucalyptus simultaneously. The pesticidal controlled-release fertilizer special for eucalyptus disclosed by the invention is capable of effectively preventing insect attack, increasing the yield of eucalyptus, controlling slow release of nitrogenous fertilizer and controlled release of potassium, phosphorus and medium trace elements, increasing the fertilizer utilization rate, reducing the fertilization time and reducing the labour intensity of farmers.

The invention provides a field fast production method of lawn grass strengthening biological fertilizers and relates to the field fast production method of the lawn grass strengthening biological fertilizers. The field fast production method aims at solving the problems that the preparation method of the existing lawn grass strengthening biological fertilizers is complicated, the time consumption is long, the cost is high, the yield is low, and the wide application and popularization is difficult. The method comprises the following steps that matrixes and flowerpots are sterilized; white clover glass seeds are sprouted; Glomus mosseae and Glomus intraradices are inoculated into the matrixes, and the white clover glass seeds are spread; after white clover leaves are grown, the watering is carried out, the culture is carried out for 20 to 30 days, water is not added until the leaves are withered, soil and roots are recovered, and composite microbial inoculums are obtained; formalin is adopted to sterilize field soil, the composite microbial inoculums and the white clover glass seeds are mixed, and the sowing is carried out; and after the white clover glass grows for 20 to 30 days, the water is not added until the glass is withered, the soil and the roots are recovered, the natural air drying is carried out, the soil and the roots are stored in ventilating drying places, and the lawn grass strengthening biological fertilizers are obtained. The field fast production method has the advantages that the method is simple, the speed is high, the cost is low, and the operation is easy. The field fast production method is used in the field of biological fertilizers.

The invention discloses an air pump floating lamp for a pearl culture water region. The air pump floating lamp comprises a transparent lamp cover, a light source and a power supply device, wherein the power supply device comprises a solar cell panel and a storage battery; a hollow floating barrel which is partially sunk into water is arranged below the transparent lamp cover; the hollow floating barrel is internally provided with an air pump; one end of the air pump is connected with an air conveying pipe; the air conveying pipe is connected with bubble stones in the water; the air pump, the storage battery and the solar cell panel are connected in series; the transparent lamp cover is provided with an air inlet; a pearl culture box is hung on the air conveying pipe. The air pump floating lamp for the pearl culture water region has the following advantages that solar energy is converted into electric energy by the solar cell panel and the electric energy is stored in the integrally-arranged storage battery; the storage battery supplies power to the air pump so that air is continuously conveyed to the underwater bubble stones through the air conveying pipe by the air pump and the air compressed by the air pump is converted into smaller bubbles; dissolved oxygen in the water is improved to the greatest extent and is used for reducing eutrophication pollution so that the air pump floating lamp is green, environment-friendly and pollution-free.

The invention provides a fermentation agent for treating blue algae polluted water. The fermentation agent comprises algae-lysing advantage strain freeze-dried powder screened from the blue algae polluted water, quicklime powder, brown sugar, sodium bicarbonate, edible salt, yeast powder, rice straw powder, plant ash and vanadium pentoxide, wherein the quicklime powder, the brown sugar, the sodiumbicarbonate, the edible salt, the yeast powder, the rice straw powder, the plant ash and the vanadium pentoxide serve as ingredients of a culture medium. The invention further provides a composite microbial agent for treating the blue algae polluted water. The composite microbial agent is prepared through subjecting the fermentation agent, the rice straw powder, reed powder and rice hull powder to anaerobic shaded fermentation. The invention further provides preparation methods for the fermentation agent and the composite microbial agent, use of the fermentation agent and the composite microbial agent in treatment of the blue algae polluted water and a method for treating the blue algae polluted water. Algae-lysing advantage strains in the composite microbial agent can be used for promoting apoptosis of blue algae cells, and a large amount of lactic acid bacteria in the composite microbial agent can be used for absorbing substances such as saccharides and cellulose released from deadblue algae cells. The composite microbial agent can be directly put into the blue algae polluted water, the use is simple, convenient and efficient, and the rice straw powder, the reed powder and therice hull powder, which are used for preparing the composite microbial agent, are wide in source of raw materials and low in cost.

An intertidal zone type multi-nutrient-layer aquaculture net field in an offshore deepwater area comprises an upper-layer sea surface aquaculture net field, a plurality of vertical floating supporting devices are fixedly connected to the upper-layer sea surface aquaculture net field, and the vertical floating supporting devices are connected through net ropes to form a middle-layer aquaculture net field. Hanging string type culture base ropes are fixedly connected between the middle-layer culture net field and the upper-layer sea surface culture net field, and the hanging string type culture base ropes are vertically arranged to form a middle-layer culture growth base. The aquaculture net field can automatically and vertically float on the sea surface during high tide, so that cultured organisms such as seaweed can receive sunlight for photosynthesis and absorb nutrients in seawater for breeding and growth; the aquaculture net field can automatically slide off in low tide, can be dried out of water and aired, can remove bacteria and impurities, and can promote material exchange, the aquaculture net field can realize multi-nutrition-layer complementation and relay ecological breeding, the production and income can be increased, the water quality can be purified, the environment can be governed, and a natural ecological system can be built.

The invention discloses a dedicated formula fertilizer for planting soya beans, which is composed of KNO3; KCl or K2SO4; Ca(H2PO4)2.H2O or KH2PO4; CO(NH2)2 or (NH4)2SO4 or 5Ca(NO3)2.NH4NO3.10H2O; MgSO4.7H2O or MgSO4.H2O; and FeSO4.7H2O. A test result proves that the yield per Mu of the dedicated formula fertilizer in the invention is higher than that in a common fertilization method (with a compound fertilizer, urea, diammonium phosphate, calcium superphosphate, monopotassium phosphate, ammonium sulfate, potassium chloride and potassium sulfate) applied in peasant households at present. The dedicated formula fertilizer has simple use method and enables plants to grow robustly. The dedicated formula fertilizer has resistance to diseases and pests, reduces application time of pesticides, reduces cost on pesticides and manpower, can increase the yield per Mu by about 10%, can increase the oil content and improve quality of the soya beans, and can recover an original taste of the soya beans. The fertilizer has very high application value and wide market prospect.

The invention relates to the field of mariculture, and discloses a mariculture pond with an efficient pollution discharge function, comprising a culture pond body and a sewage purification device arranged around the culture pond; the sewage purification device comprises a sludge treatment bin, a sewage purification bin and a water storage bin; a sludge accumulation bin is arranged at the bottom of the breeding pool body, a sludge treatment bin is arranged on one side of the breeding pool body, and the sludge treatment bin is communicated with the sludge accumulation bin through a first pipeline; the upper end of the sewage purification bin is communicated with the sludge accumulation bin through a second pipeline, and the lower end of the sewage purification bin is communicated with the water storage bin through a third pipeline. The process is simple and practical, that is, metabolic sediments deposited at the bottom of the pond are pumped out and filtered, meanwhile, purification treatment of removing nitrogen and phosphorus is carried out on water, then proper oxygenation is carried out, and finally, the water is conveyed into the pond again, so that a whole set of efficient pollution discharge method integrating impurity removal, purification, oxygenation and circulation is completed.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a special organic-inorganic compound fertilizer for green bamboo shoot forests and a preparation method thereof. According to the special organic-inorganic compound fertilizer for green bamboo shoot forests, plant-based organic fertilizer and inorganic fertilizer are mixed according to the total nutrient ratio of 1: 2 to obtain the compound fertilizer with the total nutrient content being 15.1% and the organic matter content being larger than or equal to 30%; the raw materials of the plant-based organic fertilizer comprise vinasse, bamboo shoot shells, rice husks, soybean meal and monosodium glutamate sediment; the inorganic fertilizer comprises the following raw materials: urea, diammonium phosphate and potassium sulfate; the total nutrient content of the plant-based organic fertilizer is greater than or equal to 6.2%, and the organic matter content is greater than or equal to 50%; and the total nutrient content of the inorganic fertilizer is 50.5%. The special organic-inorganic compound fertilizer for green bamboo shoot forests provided by the invention can effectively solve the problem that the yield and quality of green bamboo shoots are reduced due to too high or too low organic fertilizer proportion in the existing compound fertilizer for green bamboo shoot forests.