CN113511741A - System for controlling land source pollution and recycling water and fertilizer resources in hilly stage - Google Patents
System for controlling land source pollution and recycling water and fertilizer resources in hilly stage Download PDFInfo
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- CN113511741A CN113511741A CN202110721930.6A CN202110721930A CN113511741A CN 113511741 A CN113511741 A CN 113511741A CN 202110721930 A CN202110721930 A CN 202110721930A CN 113511741 A CN113511741 A CN 113511741A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/02—Special arrangements for delivering the liquid directly into the soil
- A01C23/023—Special arrangements for delivering the liquid directly into the soil for liquid or gas fertilisers
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention discloses a system for controlling source pollution and recycling water and fertilizer resources on hilly terraced land, which specifically comprises a reverse-slope terraced plant fence, a buried water collecting pipeline, a step lifting well, a slope top water collecting tank, a slope top water and fertilizer integrated fertilizer distribution tank and a circulating self-flow drip irrigation system. The method is mainly designed aiming at the special topographic characteristics of the navel orange garden in the hilly area, corresponding pipelines are arranged, rainfall runoff is collected, the collected runoff is lifted to the top water collecting tank through a water pump, and irrigation and recycling are carried out according to the required characteristics of water and fertilizer in different stages of the growth cycle of the navel oranges. The method improves the non-point source pollution of the navel orange garden, reduces the planting cost of the navel oranges, and relieves the influence of environmental factors such as drought stress on the growth of the navel oranges in a mode of recycling water and fertilizer resources of the navel orange garden. Meanwhile, the navel orange planting system is provided with four fertility intercepting systems, so that pollutants carried by general rainfall runoff and runoff in an extra-large rainstorm period can be intercepted, and the economic benefit of navel orange planting is improved.
Description
Technical Field
The invention belongs to the technical field of rainwater accumulation and pollution control, and particularly relates to a system for controlling the land source pollution and recycling water and fertilizer resources in hilly stages.
Background
Agricultural non-point source pollution becomes a prominent environmental problem in agricultural development, wherein the non-point source pollution problem caused by unreasonable farming and fertilizing ways is particularly prominent. The slope of the red soil hilly area in south is larger, the navel orange garden is built by digging mountains, the fertilizing amount is higher, and the risk of water and soil loss and agricultural non-point source pollution is larger. In order to improve the yield of navel oranges, the fertilizer is applied to a navel orange garden more than that required by the growth of the navel oranges, the utilization rate of the fertilizer in the season is lower than 20 percent, most of nutrient substances in the applied fertilizer are accumulated in soil and run off along with surface runoff and soil runoff, downstream water is polluted, and water eutrophication is caused.
Nutrient elements such as nitrogen, phosphorus and the like in the soil run off along with surface runoff, so that not only is the nutrient wasted, but also the nutrient enters downstream water body to cause water body pollution. Therefore, nutrients lost along with surface runoff are reasonably recycled and applied to the navel orange garden again, so that the application of exogenous fertilizers can be reduced, and the navel orange planting and fertilizing cost is effectively reduced. On the other hand, rainfall in south has seasonality, and the water demand of the navel oranges in different growth periods is obviously different. Therefore, runoff containing nutrient elements such as nitrogen and phosphorus is reasonably collected, and the runoff is returned to the field again by using an irrigation system, so that the effects of recovering water resources and fertility can be achieved.
Currently, although some runoff accumulation systems exist, hedges and impoundment wells are used in combination to intercept accumulated rainwater and to be used in dry farming modes. However, these systems are generally suitable for runoff interception with low strength, and cannot achieve a good interception function for storm runoff. On the other hand, the selected hedges usually only consider the water and soil interception effect, and lack economic value for planting managers. Therefore, the hedgerow with good water and soil conservation capacity and high economic value is selected, the runoff intercepting system with wide rainfall application range is constructed, and the runoff intercepting system has important practical significance for reducing water and soil loss and surface source pollution in hilly areas. Meanwhile, the environment-friendly agricultural and forestry waste environment restoration material has a good use effect in the aspect of fertility recovery, but is rarely used in a hilly area orchard system. Therefore, the application of the agricultural and forestry wastes to the environment restoration material in the hilly area orchard system has important significance for non-point source pollution control.
Disclosure of Invention
The invention aims to solve the problems that: firstly, Melastoma dodecandrum is adopted as a hedge, Melastoma dodecandrum is a herbaceous plant of Melastomataceae, the root system is fine and developed, a steep and lean slope is often grown, the reduction efficiency of the soil erosion amount is up to 97%, and the system has high medicinal value and economic value; secondly, the four-fertility intercepting system can intercept pollutants carried by general rainfall runoff and runoff in an extra-large rainstorm period; finally, the invention can play a role in recycling water and fertilizer resources and return the water and fertilizer resources to the field.
The technical scheme provided by the invention for solving the problems is as follows: a system for controlling the source pollution and cyclic utilization of water and fertilizer resources in the land of hilly area includes
Reverse slope step hedgerow: firstly, constructing an adverse slope step land on a hilly slope land, and simultaneously transversely planting a hedgerow at the junction of the upper part of a step wall and an adverse slope step surface to intercept rainfall slope runoff, wherein the hedgerow is constructed by selecting Melastoma dodecandrum suitable for southern acid red soil; melastoma dodecandrum lour is a herbaceous plant of melastoma family, has a dense and developed root system, is often born on a steep and lean slope, and has a reduction efficiency of 97% on soil erosion amount. On the other hand, the melastoma dodecandrum lour root has the effects of promoting blood circulation, stopping bleeding, promoting diuresis and detoxifying, and has higher medicinal value and economic value. The invention particularly selects Melastoma dodecandrum which is suitable for the southern acid red soil to construct the hedgerow;
buried water collecting pipeline: transversely excavating a ditch at the joint of the reverse slope terrace surface and the lower part of the terrace wall, embedding a prefabricated water collecting pipeline with a U-shaped cross section in the ditch, wherein bamboo joints are arranged at the bottom of the water collecting pipeline, a biomass charcoal bag packaged by a 10-mesh gauze is put between every two bamboo joints and used for adsorbing nitrogen and phosphorus in runoff, biomass charcoal in the biomass charcoal bag is obtained by performing high-temperature oxygen-limited pyrolysis on waste fruit trees in a navel orange garden and modifying magnesium salts, and the biomass charcoal bag is periodically collected and replaced and is used as a biomass fertilizer to be put into a navel orange planting system again, which is the first fertility circulation measure of the invention;
step lift shaft: the step lifting well consists of a left grit chamber, a right grit chamber, a middle water collecting well and a water pump; the water outlet pipeline is firstly connected with a grit chamber of the step lifting well through the underground, and then is laterally connected with a water collecting well in the middle, a water pump is arranged at the lower part of the water collecting well, a water level monitoring system is arranged at the upper part of the water collecting well, the water pump is flexibly controlled to be switched on and off by synthesizing rainfall conditions and navel orange growth water demand requirements, and runoff which is collected in the water collecting well and is rich in nitrogen and phosphorus is conveyed to a slope top water collecting pool for recycling, which is the second fertility cycle measure of the invention; silt in the grit chamber is directly used as a fertilizer to be applied to the navel orange after being periodically desilted and collected, which is the third fertility cycle measure of the invention; a V-shaped opening is formed in the top of the water collecting well, which is close to the surface below the slope, a series of biomass charcoal bags packaged by 10-mesh gauze are buried along the slope below the V-shaped opening, the biomass charcoal bags are periodically replaced and collected, and are used as biomass fertilizer to be fed into the navel orange planting system again, and the fourth fertility circulation measure is mainly used in rainy seasons.
A slope top water collecting tank: building a water collecting tank at the top of the slope of the navel orange garden for storing runoff rich in nitrogen and phosphorus conveyed by the cascade lifting well; meanwhile, the fertilizer can also be used as a source of a subsequent water and fertilizer integrated fertilizer preparation pool;
the water and fertilizer integrated fertilizer preparation pool on the slope top comprises: a water and fertilizer integrated fertilizer preparation pool is built beside the water collecting pool and is specially used for preparing liquid fertilizer; the water used by the fertilizer preparation pool mainly comes from a slope top water collecting pool;
circulation gravity flow drip irrigation system: according to the requirements of navel oranges for water and fertilizer in different growth periods, a drip irrigation system is reasonably arranged according to the positions of navel oranges in a garden, water gravity is used for self-flow irrigation, water and fertilizer are integrally applied, and the cost is greatly saved.
Preferably, the water collecting pipeline is made of plastic or cement prefabricated plates and can be freely spliced.
Preferably, the bamboo joint height is 1/5 of the pipeline height.
Preferably, the side of the bottom water collecting pipeline close to the navel orange tree is provided with a V-shaped opening, and the opening part is covered by the filter screen.
Preferably, the water collecting pipeline is covered with the check of well style of calligraphy and blocks above, has certain hardness, can be able to bear or endure artificially trampling, also can prevent leaf or gravel to get into the water collecting pipeline.
Preferably, the bottoms of the two sides of the water collecting pipeline are respectively connected with a water outlet pipeline, and a filter screen is arranged at an outlet.
Preferably, according to the size and the topography difference in navel orange garden, the lift-well quantity can be controlled in a flexible way, and the runoff that many ladders were received to a lift-well collects.
Compared with the prior art, the invention has the advantages that: the method is characterized in that a navel orange garden is specially designed, corresponding pipelines are arranged, rainfall runoff is collected, a water pump is used for lifting the rainfall runoff to a top water collecting tank, and collected rainwater is recycled according to the requirements of navel oranges for water and fertilizer in different growth periods. The method can effectively control the non-point source pollution of the navel orange garden on one hand, and can recycle water and fertilizer resources on the other hand.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the stepped lift shaft and hill top sump of the present invention;
fig. 4 is a top view of the sump well.
The attached drawings are marked as follows: 1. the system comprises a reverse slope terrace, 2, navel orange trees, 3, hedges, 4, a water collecting pipeline, 5, grid blocking, 6, bamboo joints, 7, a biomass charcoal bag, 8, a grit chamber, 9, silt, 10, a water collecting well, 11, a water pump, 12, a V-shaped opening, 13, a slope top water collecting tank, 14, a water and fertilizer integrated fertilizer preparation tank and 15, and a circulating self-flowing drip irrigation system.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
A system for controlling source pollution and recycling water and fertilizer resources on hilly land specifically comprises the following parts:
reverse slope step hedgerow: firstly, constructing a reverse slope terrace in a navel orange garden, transversely planting a hedge at the junction of the upper part of a terrace wall and a reverse slope terrace surface, and intercepting rainfall slope runoff.
Buried water collecting pipeline: specifically, as shown in fig. 1, a ditch is transversely excavated at the joint of the reverse slope tread and the lower part of the wall, a water collecting pipeline with a U-shaped cross section is embedded in the ditch, and the water collecting pipeline can be made of plastics or cement precast slabs and can be freely spliced. The bottom of the water collecting pipeline is provided with bamboo joints, and the height of the bamboo joints is about 1/5 of the height of the pipeline. And biomass charcoal bags packaged by a gauze with 10 meshes are put between every two bamboo joints for adsorbing nitrogen and phosphorus in runoff. The biomass charcoal is prepared by carrying out high-temperature oxygen-limited pyrolysis on waste fruit trees in the navel orange garden and modifying the waste fruit trees by magnesium salts, and has a good adsorption effect on nitrogen and phosphorus. The biomass charcoal bags need to be replaced and collected regularly and are thrown into the navel orange planting system again as biomass fertilizers. This is the first fertility cycle measure of the present invention. In addition, a V-shaped opening is formed in the surface, close to the navel orange tree, of the bottom water collecting pipeline, the opening is covered by the filter screen, and therefore excessive overflow water in the pipeline in a rainstorm period can supply navel oranges for growth or excessive interflow water can enter the water collecting pipeline conveniently. The water collecting pipeline is covered with grid blocks in a shape like a Chinese character 'jing', has certain hardness, can resist man-made treading, and can prevent sundries such as leaves or gravels from entering the water collecting pipeline. The bottoms of the two sides of the water collecting pipeline are respectively connected with a water outlet pipeline, and a filter screen is arranged at the outlet.
Step lift shaft: referring to fig. 2, the stepped lift shaft is composed of a left and a right grit chambers, a middle water collecting well and a water pump. The water outlet pipeline is connected with the grit chamber of the step lifting well through the ground and then laterally connected with the middle water collecting well. According to the area and the topographic features in navel orange garden, lift well quantity can be controlled in a flexible way, and runoff that many ladders were received simultaneously to a lift well collects. The sediment in the grit chamber contains a large amount of absorbed nitrogen and phosphorus nutrient elements, and can be directly used as fertilizer for navel oranges after being periodically desilted and collected. This is the second measure of the fertility cycle of the present invention. The water pump is placed in the lower part of sump pit, and water level monitoring system is installed to upper portion, synthesizes rainfall condition and navel orange growth water demand requirement, and the switch of flexible control water pump collects the runoff that is rich in nitrogen phosphorus in the sump pit, carries the top of slope catch basin reuse. This is the third measure of the fertility cycle of the present invention. In addition, in order to deal with the problem that the runoff caused by heavy rainfall in a short period is too large and exceeds the capacity of the water collecting well, a V-shaped opening is formed in the top of the water collecting well close to the surface below the slope, and a series of biomass charcoal bags packaged by 10-mesh gauze are buried below the V-shaped opening along the slope surface, so that the effect of 'water running fertilizer retention' is achieved. Similarly, the biomass charcoal bags need to be replaced and collected periodically and are put into the navel orange planting system again as biomass fertilizers.
A slope top water collecting tank: building a water collecting tank at the top of the slope of the navel orange garden for storing runoff rich in nitrogen and phosphorus conveyed by the cascade lifting well; meanwhile, the fertilizer can also be used as a source of a subsequent water and fertilizer integrated fertilizer preparation pool;
the water and fertilizer integrated fertilizer preparation pool on the slope top comprises: a water and fertilizer integrated fertilizer preparation pool is built beside the water collecting pool and is specially used for preparing liquid fertilizer; the water used by the fertilizer preparation pool mainly comes from a slope top water collecting pool;
circulation gravity flow drip irrigation system: according to the requirements of navel oranges for water and fertilizer in different growth periods, a drip irrigation system is reasonably arranged according to the positions of navel oranges in a garden, water gravity is used for self-flow irrigation, water and fertilizer are integrally applied, and the cost is greatly saved.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (7)
1. A system for controlling source pollution and recycling water and fertilizer resources on hilly land is characterized in that: comprises that
Reverse slope step hedgerow: firstly, constructing an adverse slope step land on a hilly slope land, and transversely planting melastoma dodecandrum hedges at the junction of the upper part of a ladder wall and an adverse slope ladder surface to intercept rainfall slope runoff;
buried water collecting pipeline: transversely excavating a ditch at the joint of the reverse slope tread and the lower part of the wall, and embedding a water collecting pipeline with a U-shaped cross section in the ditch. The bottom of the water collecting pipeline is provided with bamboo joints, biomass charcoal bags packaged by a gauze of 10 meshes are put between every two bamboo joints, and the biomass charcoal is formed by modifying waste fruit trees in a navel orange garden through high-temperature oxygen-limited cracking magnesium salt. The biomass charcoal bags are periodically collected and replaced, and the recovered biomass charcoal bags are used as biomass fertilizers and are put into the navel orange planting system again;
step lift shaft: the step lifting well consists of a left grit chamber, a right grit chamber, a middle water collecting well and a water pump; the water outlet pipeline is connected with the grit chamber of the step lifting well through the underground, then is laterally connected with the middle water collecting well, a water pump is arranged at the lower part of the water collecting well, a water level monitoring system is arranged at the upper part of the water collecting well, the switching of the water pump is flexibly controlled by synthesizing the rainfall condition and the navel orange growth water demand requirement, and the runoff which is rich in nitrogen and phosphorus and is collected in the water collecting well is conveyed to the slope top water collecting tank for recycling; silt in the grit chamber is periodically desilted and collected and then directly used as a fertilizer for navel oranges; a V-shaped opening is formed in the top of the water collecting well, which is close to the surface below the slope, a series of biomass charcoal bags packaged by 10-mesh gauze are embedded along the slope surface below the V-shaped opening, and the biomass charcoal bags are periodically collected and replaced and are used as biomass fertilizer to be fed into the navel orange planting system again;
a slope top water collecting tank: building a slope top water collecting tank at the top of the slope land of the navel orange garden, wherein the slope top water collecting tank is used for storing runoff which is conveyed by the stepped lifting well and is rich in nitrogen and phosphorus; meanwhile, the fertilizer can also be used as a source of a subsequent water and fertilizer integrated fertilizer preparation pool;
the water and fertilizer integrated fertilizer preparation pool on the slope top comprises: a slope top water and fertilizer integrated fertilizer preparation pool is built beside the water collecting pool and is specially used for preparing liquid fertilizer; the water used by the slope top water and fertilizer integrated fertilizer preparation tank comes from a slope top water collecting tank;
circulation gravity flow drip irrigation system: according to the requirements of the navel oranges for water and fertilizer in different growth periods, a circulating gravity drip irrigation system is reasonably arranged according to the positions of the navel oranges in the garden, and water and fertilizer are integrally applied by utilizing gravity irrigation.
2. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: the water collecting pipeline is made of plastic or cement prefabricated plates and can be freely spliced.
3. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: the bamboo joint height accounts for 1/5 of the height of the pipeline.
4. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: the side of the water collecting pipeline at the bottom, which is close to the navel orange tree, is provided with a V-shaped opening, and the V-shaped opening is partially covered by a filter screen.
5. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: the square that the water collecting pipeline top covers has the well style of calligraphy to block, has certain hardness, can be able to bear or endure artificially trampling, also can prevent leaf or gravel to get into the water collecting pipeline.
6. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: the bottom of the two sides of the water collecting pipeline is respectively connected with a water outlet pipeline, and a filter screen is arranged at the outlet.
7. The system of claim 1, wherein the system is used for controlling the land source pollution and recycling the water and fertilizer resources in the hilly area, and comprises: according to the size and the topography difference in navel orange garden, lift-well quantity can be controlled in a flexible way, and the runoff that many ladders were received to a lift-well collects.
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