CN103848541B - The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system - Google Patents
The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system Download PDFInfo
- Publication number
- CN103848541B CN103848541B CN201410036089.7A CN201410036089A CN103848541B CN 103848541 B CN103848541 B CN 103848541B CN 201410036089 A CN201410036089 A CN 201410036089A CN 103848541 B CN103848541 B CN 103848541B
- Authority
- CN
- China
- Prior art keywords
- filter strips
- filtering
- switchgrass
- vegetative filter
- energy type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of employing current collecting field, Vegetative Filter Strips and filtering pond composition water filtering system, wherein, Vegetative Filter Strips is between current collecting field and filtering pond, for filtering rainfall runoff erosion sediment and area source pollutants, the faggot foreign material that filtering pond enters for filtering Vegetative Filter Strips, the water outlet in filtering pond is connected to water-storing device; Vegetative Filter Strips is 5 ~ 7 meters along footpath flow path direction length, and width is not less than 3 meters, in easy flights in 1%, and Vegetative Filter Strips adopts the energy type herbage switchgrass of plantation coverage more than 80%, and the height of energy type herbage switchgrass is greater than 30cm; Detect through theoretical calculation and test and prove, Vegetative Filter Strips reaches 93.6% and 98.62% respectively to total phosphorus and the maximum interception result of silt, reaches 56% to the maximum interception result of COD, to silt and pollutent interception result obvious.As having further requirement to water quality, can increase water quality at filtering pond increase gac or medical stone layer.For high-efficiency agriculture provides source of clean water, form environment-friendly cycle economy.
Description
Technical field
The invention belongs to dry land agriculture to produce and improvement of the ecological environment water saving, retaining and water conservation technical field, be specifically related to the preparation method of a kind of novel hillside fields high-efficiency agriculture water filtering system.
Background technology
Implement in conceding the land to forestry and grass process in order to solve the many area ecological environment construction of China extensive, face population to increase, shortage of land resource, the outstanding problem such as grain security, water safety, many places if loess plateau is in development hillside fields high-efficiency agriculture, to carrying out efficiency utilization to water and soil resources.And in Loess Plateau development high-efficiency agriculture, the water source sediment concentration that the shortage of water needing solution arid to cause with soil erosion, erosion sediment cause is high, and rainwater utilization sedimentation basin cost is high, deposit efficiency is low, and desilting is complicated, easy destruction, the problems such as the husky efficiency utilization difficulty of water.Seek a kind of silt rich nutritive material that rainfall runoff can be utilized to carry and produce economic benefit and ecological benefits, again can filtering silt pollution thing and the filtering system of cheap economic environment protection ecological type source of clean water is exactly reality urgent need.
Summary of the invention
The object of the present invention is to provide one meet hillside fields, drought-hit area actual, local water and soil resources can be made full use of, develop a circular economy, practicality and high efficiency, ecological, environmental protective, constructability, and cheap novel hillside fields high-efficiency agriculture water filtering system preparation method.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of hillside fields high-efficiency agriculture use water filtering system preparation method, is characterized in that, the method adopts current collecting field, Vegetative Filter Strips and filtering pond composition to use water filtering system, wherein:
Current collecting field is for collecting rainfall runoff;
Vegetative Filter Strips between Ji Yuchang and filtering pond, for filtering erosion sediment and the area source pollutants of rainfall runoff, and the rich nutritive material absorbed in rainfall runoff and prevention soil and water loss;
Filtering pond is for filtering the faggot and foreign material that enter through Vegetative Filter Strips, and the length in filtering pond is more than 3 meters, and transversal face width is 30cm × 50cm deeply.The water outlet in filtering pond is connected to water-storing device;
In filtering pond, lay more than 20mm coarse-grained sandstone, 10-20mm coarse-grained sandstone, 5-10mm coarse-grained sandstone from the bottom to top successively and be less than the sand filter blanket of the thick fine-grained sandstone composition of 5mm; With water quality requirement, suitably simplify or add sand filter blanket;
Described Vegetative Filter Strips is 5 ~ 7 meters along the length of footpath flow path direction, and width is not less than 3 meters, and the gradient is less than 1%;
Plant in described Vegetative Filter Strips and be implanted with the energy type herbage switchgrass being highly greater than 30cm, and this energy type herbage switchgrass in the fraction of coverage of Vegetative Filter Strips more than 80%;
The plantation of energy type herbage switchgrass follows these steps to implement:
1) along the smooth long 5-7 rice of footpath flow path direction, be widely not less than 3 meters, in easy flights in the Vegetative Filter Strips of 1%.The ground surface soil of Vegetative Filter Strips is dug pine, cuts weeds and foreign material, then apply fertilizer to the subsoil in Vegetative Filter Strips, base fertilizer selects phosphate fertilizer and potash fertilizer also by weight 1:1 preparation, and every mu of consumption 7.5kg ~ 15kg is conducive to the growth of energy type herbage switchgrass plant shoots;
2) select to deposit to be no more than 3 years, the energy type herbage switchgrass seed of seedling rate more than 75%, cross rake by after every square meter 0.8g ~ 1.0g uniform broadcasting, Vegetative Filter Strips soil should be yellow soil or clay, and planting depth is 1 ~ 2cm;
3) after planting note irrigating, irrigate the frequency and press per week 1 time, to ensure the relative humidity of 0-10cm soil layer, maintain soil field normal moisture capacity; Seedling stage attentional manipulation weeds, after 30-45 days, energy type herbage switchgrass grows tall to 30cm, and the fraction of coverage of Vegetative Filter Strips reaches more than 80%;
4) after energy type herbage switchgrass news in annual autumn, single cradles, and stays 30cm stubble, so as next spring restoration ecosystem.
Adopt the Slopeland Agriculture water filtering system that the inventive method is built, utilize energy type herbage switchgrass economic worth high, interception good purification, by plantation energy type herbage switchgrass, form Vegetative Filter Strips interception rainfall runoff silt, Vegetative Filter Strips is by absorbing runoff and sediment nutrient rich as nitrogen phosphorus and area source pollutants, accelerating growth, (in this test, energy type tame hay switchgrass output can reach 1.445kg/m not only to increase economic worth
2, income 10-20 unit/m
2), and by energy type herbage switchgrass Littoral Barrier and nutrient rich (N/P), supplement growth desired nutritional, for high-efficiency agriculture provides source of clean water, form environment-friendly cycle economy.By filtering pond, filter further from Vegetative Filter Strips by the material grass storm runoff band.As having further requirement to water quality, medical stone or gac etc. can be increased in filtering pond to increase water quality.Through Theoretical Calculation and experiment detect prove, energy type herbage switchgrass reaches 98.62% and 93.6% respectively to silt and the maximum interception result of total phosphorus, reaches 56% to the maximum interception result of COD, to silt and pollutent interception result obvious.The filtering pond of laying different-grain diameter sandstone is high to the big scale faggot intercepting efficiency under the rainfall runoff band of the zone of vegetation, and the clear water pollutant purification effect of filtration is different with filtering pond adding material.
The preparation method of hillside fields of the present invention high-efficiency agriculture water filtering system, construction is simple, convenient, and laid down cost is traditional settling pit laid down cost 1/3, deposit efficiency improves 30%-50%, and the efficiency of management improves 300%-500%, needs management hardly.The Vegetative Filter Strips that energy type herbage switchgrass is formed belongs to perennial plant, once plantation, can gather in the crops for many years, not only can filter and utilize the husky runoff of water, also can be used as the raw material of energy type herbage and extraction ethanol petrol, turn waste into wealth, benefit-cost-ratio is greater than more than 10, overcomes traditional settling pit deposit efficiency low, and complex structure silt sediment removes difficulty, to endure cold destructible, build rehabilitation cost high-leveled and difficult with the shortcoming promoted.Its plantation can operate after simple technique training, without engineering maintenance cost, is convenient to application.Now widely used valency height poor efficiency can be replaced to use inconvenient farmland rainwater harvesting sedimentation basin, to development hillside fields high-efficiency agriculture, there is important practical significance and practical value.
Accompanying drawing explanation
Fig. 1 is hillside fields of the present invention high-efficiency agriculture water filtering system two dimensional structure and longitudinal plane structure schematic diagram.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment
Core technology of the present invention utilizes energy type herbage switchgrass (Panicum virgatum L.) to coordinate with filtering pond as Vegetative Filter Strips, Vegetative Filter Strips is for filtering erosion sediment and the area source pollutants of rainfall runoff, increase water quality further in filtering pond, irrigate even domestic water for high-efficiency agriculture and clean water source is provided, to replace current poor efficiency, costly and the inconvenient miniature sedimentation basin of rainwater harvesting of management, be that development loess plateau and hillside fields, vast arid and semi-arid erosion area high-efficiency agriculture water extraction are for technical support.
Energy type herbage switchgrass (Panicum virgatum L.) belongs to Gramineae (Gramineae) broomcorn millet subfamily (Panicoideae.A.Br) Panicum, is a kind of perennial C
4season type dogstail plant.Owing to having more powerful rhizome system, resistance is stronger, higher to the utilising efficiency of moisture, nutrient.
The stem stalk vertical growth of energy type herbage switchgrass, grow thickly, over-ground part height can reach 0.5 ~ 3.0m more, and biomass dry weight output is more than 1kg/m
2, the output value of energy type herbage switchgrass reaches as high as 10-20 unit/m
2, there are some researches show, the ethanol conversion ability of energy type herbage switchgrass exceedes corn, and every mu of energy type herbage switchgrass production capacity is equivalent to 3-4 ton standard coal, and average annual net energy output reaches 60MJ/m
2.Its root system degree of depth can reach 3m, has the ecological value of good solid soil, solid carbon.Therefore, energy type herbage switchgrass, as the raw material of reproducible clean fuel, can reduce soil erosion and desertification, is subject to extensively paying attention to both at home and abroad.
Compared with common Vegetative Filter Strips by the Vegetative Filter Strips of plantation energy type herbage switchgrass, the energy type herbage switchgrass of plantation has many advantages, the vitality of energy type herbage switchgrass is extremely indomitable, growth rapidly, can be grown on arid, the soil of impeded drainage, cold performance is also better, grass yield is large, is common careless 15 ~ 20 times.Energy type herbage switchgrass can as a kind of herbage, development aquaculture industry.Also can be used for refining alcohol fuel, become substitute energy, USDOE and the Ministry of Agriculture it can be used as cellulosic ethanol transformation mode plant.
The present embodiment provides a kind of preparation method of Slopeland Agriculture water filtering system, adopts current collecting field 1, Vegetative Filter Strips 2 and filtering pond composition filtering system, wherein:
Current collecting field 1 is for collecting rainfall runoff;
Vegetative Filter Strips 2 is between current collecting field 1 and filtering pond 2, and Vegetative Filter Strips 2 is 5 ~ 7 meters along footpath flow path direction length, and width is not less than 3 meters, and the gradient is no more than 1%.For filtering the erosion sediment and area source pollutants that absorb rainfall runoff;
The faggot foreign material that filtering pond 3 enters due to rainfall runoff for filtering Vegetative Filter Strips 2, the water outlet in filtering pond 3 is connected to water-storing device as irrigating even life water source;
The length in filtering pond 3 is generally more than 3 meters, transversal face width is generally 30cm × 50cm deeply, lays the sand filter blanket (each thickness of sand filter blanket is respectively 10cm) of the thick fine-grained sandstone composition of more than 20mm coarse-grained sandstone, 10-20mm coarse-grained sandstone, 5-10mm coarse-grained sandstone and below 5mm in filtering pond 3 from the bottom to top successively; If water quality requirement is high, then need to add special sand filter blanket material for water treatment, as medical stone or gac etc.
Plant in Vegetative Filter Strips 2 and be implanted with the energy type herbage switchgrass being highly greater than 30cm, and this energy type herbage switchgrass in the fraction of coverage of Vegetative Filter Strips more than 80%;
The plantation of energy type herbage switchgrass follows these steps to implement:
1) the long 5-7 rice in smooth gentle slope between rainwater and filtering pond 3 is collected at current collecting field 1, it is wide that to be not less than the soil of 3 meters in easy flights in 1% towards water-storing device direction as Vegetative Filter Strips 2(Vegetative Filter Strips 2) as Fig. 1, Vegetative Filter Strips 2 is yellow soil or clay, the ground surface soil of Vegetative Filter Strips 2 is dug pine, cut weeds and foreign material, then apply fertilizer to the subsoil, base fertilizer selects phosphate fertilizer and potash fertilizer (calcium superphosphate and potassium sulfate) and by weight 1:1 preparation, every mu of consumption 7.5kg ~ 15kg, is conducive to the growth of energy type herbage switchgrass plant shoots;
2) select to deposit to be no more than 3 years, the energy type herbage switchgrass seed of seedling rate more than 75%, cross rake by after every square meter 0.8-1.0g uniform broadcasting, yellow soil or clay planting depth 1-2cm;
3) after planting note irrigating, irrigate the frequency and press every star all 1 time, to ensure the relative humidity of 0-10cm soil layer, maintain soil field normal moisture capacity; Seedling stage attentional manipulation weeds, after 30-45 days, energy type herbage switchgrass grows tall to 30cm, can reach more than 80% in the fraction of coverage of Vegetative Filter Strips 2;
4) energy type herbage switchgrass is on the one hand as Vegetative Filter Strips 2, as energy type herbage and can make ethanol raw material on the other hand, and after annual autumn news, single cradles, and stays 30cm stubble, so as next spring restoration ecosystem.
Facts have proved through the Theoretical Calculation of applicant and Planting In Loess Plateau, energy type herbage switchgrass has very high interdiction capability as Vegetative Filter Strips to rainfall runoff silt and pollutent.And energy type herbage switchgrass economic ecology utility value is high, interception good purification, by plantation energy type herbage switchgrass, form Vegetative Filter Strips interception rainfall runoff silt, Vegetative Filter Strips is by absorbing runoff and sediment nutrient rich and area source pollutants, accelerating growth, not only can increase economic worth, and by Littoral Barrier and nutrient rich, supplement growth desired nutritional, for high-efficiency agriculture provides source of clean water, form environment-friendly cycle economy.By filtering pond, filter further from Vegetative Filter Strips by the material grass storm runoff band.As having further requirement to water quality, gac or medical stone etc. can be increased in filtering pond to increase water quality until reach and drink.
Experiment according to applicant shows, this system building cost is 1/3 of traditional settling pit laid down cost, and deposit efficiency improves 30%-50%, and the efficiency of management improves 300%-500%, needs management hardly.
Through simulated rain trails checking, the interception result of this system to silt and pollutent is high, and concrete interception result is in table 1.
Table 1: filtering system is to Rainfall Runoff interception result table
Through Theoretical Calculation and experiment detect prove, it reaches 98.62% and 93.6% respectively to silt and the maximum interception result of total phosphorus, reaches 56% to the maximum interception result of COD, to silt and pollutent interception result obvious.And common miniature settling pit can only play the effect of sedimentation silt, its intercepting efficiency can only reach 30%-50%, and cost is high, and maintenance cost is high; Native system can not only increase greenery area, reduce production cost, and can effectively tackle the pollutent utilized in rainfall runoff, more than 90%, 85% and 50% can be reached respectively to the intercepting efficiency of silt, total phosphorus, COD, energy type herbage switchgrass can also be gathered in the crops and increase economic worth, compared to common settling pit, its Littoral Barrier and pollutent Be very effective, effectively can clean rainfall runoff, increases economic benefit.
Current in Vegetative Filter Strips 2, after the interception of energy type herbage switchgrass, sediment charge seldom, reaches the drip irrigation of national regulation substantially to sediment concentration requirement.If run into heavy rain, from some faggots Vegetative Filter Strips 2 band, the interception of some coarse-grained sandstones of filling can filter in filtering pond 3.If have particular requirement to water quality, then need to design by particular requirement the sand filter blanket in filtering pond 3.
Claims (4)
1. a preparation method for Slopeland Agriculture use water filtering system, is characterized in that, the method adopts current collecting field (1), Vegetative Filter Strips (2) and filtering pond (3) composition to use water filtering system, wherein:
Current collecting field (1) is for collecting rainfall runoff;
Vegetative Filter Strips (2) is positioned between current collecting field (1) and filtering pond (3), for filtering erosion sediment and the area source pollutants of rainfall runoff, and the rich nutritive material absorbed in rainfall runoff and prevention soil and water loss;
Filtering pond (3) is for filtering the faggot and foreign material that enter through Vegetative Filter Strips (2), and the water outlet of filtering pond (3) is connected to water-storing device;
In filtering pond (3), lay more than 20mm coarse-grained sandstone, 10-20mm coarse-grained sandstone, 5-10mm coarse-grained sandstone from the bottom to top successively and be less than the sand filter blanket of the thick fine-grained sandstone composition of 5mm; With water quality requirement, suitably simplify or add sand filter blanket;
Described Vegetative Filter Strips (2) is 5 ~ 7 meters along the length of footpath flow path direction, and width is not less than 3 meters, and the gradient is less than 1%;
Plant in described Vegetative Filter Strips (2) and be implanted with the energy type herbage switchgrass being highly greater than 30cm, and this energy type herbage switchgrass in the fraction of coverage of Vegetative Filter Strips (2) more than 80%;
The plantation of energy type herbage switchgrass follows these steps to implement:
1) smooth Vegetative Filter Strips (2), the ground surface soil of Vegetative Filter Strips (2) is dug pine, cut weeds and foreign material, then apply fertilizer to the subsoil in Vegetative Filter Strips (2), base fertilizer selects phosphate fertilizer and potash fertilizer also by weight 1:1 preparation, every mu of consumption 7.5kg ~ 15kg, is conducive to the growth of energy type herbage switchgrass plant shoots;
2) select to deposit to be no more than 3 years, the energy type herbage switchgrass seed of seedling rate more than 75%, cross rake by after every square meter 0.8g ~ 1.0g uniform broadcasting, Vegetative Filter Strips (2) is yellow soil or clay, and planting depth is 1 ~ 2cm;
3) after planting note irrigating, irrigate the frequency and press per week 1 time, to ensure the relative humidity of 0-10cm soil layer, maintain soil field normal moisture capacity; Attentional manipulation weeds during seedling stage, after 30-45 days, energy type herbage switchgrass grows tall to 30cm, reaches more than 80% in the fraction of coverage of Vegetative Filter Strips (2);
4) after energy type herbage switchgrass flood in annual autumn, single cradles, and stays 30cm stubble, so as next spring restoration ecosystem.
2. the method for claim 1, is characterized in that, described current collecting field (1) comprise do not carry out special processing road, hillside fields or field.
3. the method for claim 1, is characterized in that, the length in described filtering pond (3) is more than 3 meters, and transversal face width is 30cm × 50cm deeply.
4. the method for claim 1, is characterized in that, described sand filter blanket is active carbon layer or medical stone layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036089.7A CN103848541B (en) | 2014-01-26 | 2014-01-26 | The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410036089.7A CN103848541B (en) | 2014-01-26 | 2014-01-26 | The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103848541A CN103848541A (en) | 2014-06-11 |
| CN103848541B true CN103848541B (en) | 2015-10-07 |
Family
ID=50856717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410036089.7A Expired - Fee Related CN103848541B (en) | 2014-01-26 | 2014-01-26 | The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103848541B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607796A (en) * | 2018-11-27 | 2019-04-12 | 中国科学院华南植物园 | A kind of method of non-point pollution ecology prevention and control |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107330182B (en) * | 2017-06-28 | 2020-08-14 | 西北农林科技大学 | Method for calculating slope stability safety coefficient by reducing strength based on humidification condition |
| CN108218120B (en) * | 2018-01-12 | 2020-05-22 | 河海大学 | River lake shore area runoff pollutant composite interception system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10152671A1 (en) * | 2001-10-05 | 2003-04-24 | Ingbuero Dr Fechter Gmbh | Granulate used in percolator for purifying rainwater contains zeolite as well as iron hydroxide or is particulate carrier covered with iron hydroxide paste |
| CN101264982A (en) * | 2008-04-24 | 2008-09-17 | 上海交通大学 | Ecological restoring and maintaining method for landscape water body |
| CN101269900A (en) * | 2008-04-28 | 2008-09-24 | 深圳市润和天泽环境科技发展有限公司 | Ecological system for water purification and recover |
| US7510649B1 (en) * | 2004-01-09 | 2009-03-31 | Ronald Lavigne | Top loading vertical flow submerged bed wastewater treatment system |
| CN101892702A (en) * | 2010-08-05 | 2010-11-24 | 上海交通大学 | Onsite processing device for discarding initial rainwater in heavy rain without occupying area and processing method thereof |
| CN102712513A (en) * | 2009-12-31 | 2012-10-03 | 法国滤园有限公司 | Organic filter planted with european and/or tropical desertic canes for the treatment of polluted water, soil or air |
| CN203095806U (en) * | 2013-01-29 | 2013-07-31 | 北京铭泽源环境工程有限公司 | Multifunctional rainwater collecting, treating and recycling device |
-
2014
- 2014-01-26 CN CN201410036089.7A patent/CN103848541B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10152671A1 (en) * | 2001-10-05 | 2003-04-24 | Ingbuero Dr Fechter Gmbh | Granulate used in percolator for purifying rainwater contains zeolite as well as iron hydroxide or is particulate carrier covered with iron hydroxide paste |
| US7510649B1 (en) * | 2004-01-09 | 2009-03-31 | Ronald Lavigne | Top loading vertical flow submerged bed wastewater treatment system |
| CN101264982A (en) * | 2008-04-24 | 2008-09-17 | 上海交通大学 | Ecological restoring and maintaining method for landscape water body |
| CN101269900A (en) * | 2008-04-28 | 2008-09-24 | 深圳市润和天泽环境科技发展有限公司 | Ecological system for water purification and recover |
| CN102712513A (en) * | 2009-12-31 | 2012-10-03 | 法国滤园有限公司 | Organic filter planted with european and/or tropical desertic canes for the treatment of polluted water, soil or air |
| CN101892702A (en) * | 2010-08-05 | 2010-11-24 | 上海交通大学 | Onsite processing device for discarding initial rainwater in heavy rain without occupying area and processing method thereof |
| CN203095806U (en) * | 2013-01-29 | 2013-07-31 | 北京铭泽源环境工程有限公司 | Multifunctional rainwater collecting, treating and recycling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607796A (en) * | 2018-11-27 | 2019-04-12 | 中国科学院华南植物园 | A kind of method of non-point pollution ecology prevention and control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103848541A (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104817182B (en) | The method building preventing and controlling agricultural area source pollution cold district riparian buffer strips | |
| CN103086513B (en) | Ecological ditch for increasing utilization rates of N and P in farmland by controlling agricultural non-point source pollution | |
| CN103588303B (en) | Ecological check dam prevention and control system for three gorges reservoir region hilly land ravine agricultural non-point source pollution | |
| CN105776736A (en) | Method for treating agricultural non-point source pollution in hilly areas | |
| CN105696606A (en) | Semi-arid area ecological slope protection structure and construction method thereof | |
| CN103314763A (en) | Micro-reformation and vegetation restoration method for degraded plateau and lake wetlands | |
| CN110073876B (en) | Ecological transformation method for vertical hard bank slope | |
| CN102301943A (en) | Method for producing portable plant cane blanket | |
| CN103814647A (en) | Saline land improvement method appropriate for arid and semi-arid region | |
| CN103628449A (en) | Biochar grassed slope structure for coastal reclamation district channel | |
| CN102603071A (en) | Construction method for nitrogen and phosphorus loss system of greenhouse soil of intercept river network area | |
| CN103422466A (en) | Black and odorous river regulating and recovering method | |
| CN103233449A (en) | Efficient ecological interception ditch suitable for dry land farmlands | |
| CN103848541B (en) | The preparation method of a kind of hillside fields high-efficiency agriculture water filtering system | |
| CN104032717A (en) | Yellow River irrigation area farmland ecological ditch constructing method | |
| CN104094692B (en) | A kind of biological carbon reducing sloping upland pollution of area source improves the method for ecological ridge | |
| CN102001752B (en) | Method for building ecological interception ditch plant community by taking Phalaris canariensis as dominant species | |
| CN2928836Y (en) | Plant bed type waste water resource treating system | |
| CN203256709U (en) | Efficient ecological intercepting ditch suitable for dry land farmland | |
| CN210130229U (en) | Water-collecting tile dry land superposed rainfall greening device and system thereof | |
| CN106946358A (en) | A kind of plant buffer strip of combination landscape design | |
| CN106665101A (en) | Rainwater garden system used for community rainwater diversion, peak clipping and ecological purification | |
| CN103112954B (en) | Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof | |
| CN206070498U (en) | A kind of farmland submerged plant ecological canal for processing early-stage rainwater | |
| CN205856120U (en) | The facility of widespread pollution from the overuse of fertilizers and pesticides in rural area is cut down based on fast-growing economic tree |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |