CN1169422C - Sucking irrigation method with mulching under soil - Google Patents

Sucking irrigation method with mulching under soil Download PDF

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Publication number
CN1169422C
CN1169422C CNB021090793A CN02109079A CN1169422C CN 1169422 C CN1169422 C CN 1169422C CN B021090793 A CNB021090793 A CN B021090793A CN 02109079 A CN02109079 A CN 02109079A CN 1169422 C CN1169422 C CN 1169422C
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water
layer
soil
irrigation
irrigation method
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CNB021090793A
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CN1362012A (en
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邵龙潭
单宗岭
王军辉
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邵龙潭
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Abstract

The present invention provides a suction irrigation method for film mulching under a soil layer, which relates to the water saving irrigation method that geomembrane or film is laid at the lower part of the soil layer of certain thickness to realize underground irrigation. A water isolating layer is laid at the lower part of the soil layer of ground depth, and materials of the water isolating layer can be film, thickening film or geomembrane. A water storing layer is laid on the water isolating layer according to requirement, wherein a reverse filtration layer is laid on the water storing layer, the soil layer is laid on the reverse filtration layer, and water is applied to the soil of root systems of crops under the surface evaporation function of soil layer capillary and the soil layer. The water isolating layer prevents water in the water storing layer from penetrating underground, and the reverse filtration layer prevents the soil of the upper covering soil layer from silting and plugging the water storing layer. The water storing layer is communicated with a ditch for discharging the water through a water permeating wall, the present invention realizes water supply and the collection storage of rain water, has the advantages of irrigation water saving, investment saving, long service life and reduced pollution, is particularly suitable for the afforestation lawn of cities, natural sod playgrounds and agricultural vegetable and seedling greenhouses, and is also suitable for wind prevention, sand stabilization, the recovery of grassland vegetation and the treatment of waste land, and irrigation and fertilizer application are carried out simultaneously.

Description

Sucking irrigation method with mulching under soil
(1) technical field:
The present invention relates to lay the water-saving irrigation method of geomembrane or mulch film realization subsurface irrigation in certain thickness soil layer bottom.
(2) background technology:
At present, known irrigation method can be divided into surface irrigation, sprinkling irrigation and drip irrigation.Surface irrigation is a kind of traditional irrigation method.It is by channel hydraulic pipeline, and the ditch of process design, furrow are to field Shi Shui again.This method is with a long history, has advantages such as simple to operate, that operating cost is low, maintaining is convenient, is a kind of irrigation method of developing country's the most extensive employing at present particularly in the world, accounts for more than 90% of the gross area of pouring water.Account for 98% at present in China.The disadvantage of ground irrigation method is that the utilization ratio of water is low, and evaporation and seepage loss are big.Sprinkling irrigation is the irrigation method by the field feedwater of water spray enforcement aloft.Because sprinkling irrigation needs higher hydraulic pressure power, so will use the pressure pipeline water delivery.In general, its tangible advantage is to pour water evenly, and it is few to occupy cultivated land, and saves manpower, strong to the adaptability of landform.Major defect is to be subjected to wind effect big, and the process of pouring water exists airborne moisture loss and surface evaporation loss, and equipment investment is higher.Drip irrigation is directly delivered to irrigation water near every crop root with little plastic tube, and water is slowly oozed a kind of accurate irrigation method in the place that needs water by water dropper.It can be accomplished only to irritate crop and not irritate the soil, and can make the moisture of crop root zone be in optimum state for a long time, reaches the effect of water-saving and yield-increasing.Its disadvantage is that the water dropper flow-out hole is young, and flow velocity is low, and blockage problem is serious.Similarly also have micro drip-irrigation with drip irrigation, be also referred to as mist and irritate, it changes water dropper into mini sprinkler, can reduce the obstruction possibility, and shortcoming is the equipment investment height, during irrigation in the air moisture loss big.The in addition infiltrating irrigation similar to underground drip irrigation.Be that to replace a water dropper all to imbed underground with oozing head, the water that oozes head is not one after another drop of outflow, but seepage flow comes out at leisure.But the obstruction of micropore seepage flow pipe also is serious problems.
(3) summary of the invention:
The present invention solves the existing not enough problem of above-mentioned irrigation method emphatically, and a kind of sucking irrigation method with mulching under soil is provided, and reaches water saving, the purpose that operation maintenance is easy.
Technical scheme of the present invention is: water barrier is laid in the soil layer bottom in the face of land degree of depth, lays soil layer on water barrier, and the water barrier material can be mulch film or geomembrane.Lay the water storage layer as required above the water barrier, the water storage layer material is the organic polymer synthetic material of rubble, inorganic porous material or highly permeable.Confession, drain ditch are communicated with by permeable wall with the water storage layer.Lay loaded filter on the water storage layer, the loaded filter material is sand or geotextiles.It is underground that water barrier prevents that the water in the water storage layer is penetrated into; The water storage layer plays water flowing and water storage effect; On loaded filter, lay soil layer, under the capillary and evaporation of soil layer, the water in the water storage layer is risen to overburden layer realize that executing water to root system of plant irrigates.
Advantage of the present invention is that (1) forms artificial impermeable stratum at the soil layer bottom of certain depth laying water barrier, pour water in water storage layer during irrigation on the water barrier mulch film, rely on the capillarity of soil and the evaporation on top layer to keep surface soil layer moistening, surface water cut is lower, avoided airborne moisture loss and to underground seepage loss, compare with existing irrigation method, water-saving result is obvious.(2) equipment and material reduced investment.The water system of sucking irrigation method adopts irrigation canals and ditches or does not have pressure pipeline, because the water storage layer itself has the water guide effect, so the arrangement pitch of irrigation canals and ditches or pipeline can be very big, does not also need compression system and shower nozzle, water dropper or arm simultaneously.Mulch film and water storage layer material (rubble, sand, few grating concrete or cotton-shaped nylon wire) are the materials that sucking irrigation method need increase, and these materials all compare cheaply.(3) operation maintenance is simple.Need hardly in the running to safeguard or only need seldom maintenance cost that supporting water storage layer water level and soil moisture content monitoring device can be easy to realize irrigating control automatically simultaneously.(4) service life is long.The ageing resistance of mulch film or geo-membrane material is more intense, and can reach more than 50 years general service life, and therefore, sucking irrigation method once drops into and can use for many years, and operation and maintenance cost is cheap.Certainly, also can adopt degradable mulch as required.(5) belong to underground irrigation method, do not influence farming on the ground.(6) chemical fertilizer, agricultural chemicals etc. can be dissolved in importing water storage layer in the irrigation water, reduce groundwater contamination.(7) once feedwater can be kept the long period.Because the existence of underground water storage layer, the humidity of soil layer can be kept for a long time after once pouring water, and is generally 5-15 days, is convenient to management and control.(8) can compile rainwater.During rainfall, surface water can not see through water barrier, and excess surface water can be by the anti-water storage layer that pours into of irrigation canals and ditches that supplies water, when rainfall is very big, rainwater unnecessary after filling the water storage layer can also be pooled in the set water cellar by water system, reaches the purpose that makes full use of rainfall.This method is particularly suitable for urban afforestation lawn, natural sod sports ground, agriculture vegetables nursery stock booth and other needs the irrigation in the field (as the rice field) of flood irrigation.Also be applicable to and check winds and fix drifting sand and desert treatment.This is significant to western arid area.
(4) description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the embodiment of the invention 2 structural representations.
Fig. 3 is the embodiment of the invention 3 structural representations.
(5) embodiment:
Embodiment 1
Sucking irrigation method with mulching under soil as shown in Figure 1, is laid water barrier 1 in degree of depth soil layer bottom, the face of land, and material is a geomembrane.Lay water storage layer 2 above the water barrier, the water storage layer material is a rubble.Confession, drain ditch are communicated with by permeable wall with the water storage layer.Lay loaded filter 3 on the water storage layer, the loaded filter material is a fine sand, and loaded filter prevents silting water storage layer.Lay soil layer 4 on loaded filter, plant relies on soil layer capillary and top layer evaporation, reaches to inhale the purpose of irritating.
Embodiment 2
Sucking irrigation method with mulching under soil, as shown in Figure 2, lay compound water barrier 1 and water storage layer 2 in degree of depth soil layer bottom, the face of land, the water storage layer adopts the cotton-shaped nylon wire of passive organic polymer synthetic material, and water storage fleece shape nylon wire and water barrier mulch film are bonded together.Laying loaded filter geotextiles 5 at the water storage laminar surface, is soil layer 4 above the geotextiles, and confession, drain ditch are communicated with by permeable wall 6 with the water storage layer.Geotextiles prevents earth silting water storage layer.
Embodiment 3
Sucking irrigation method with mulching under soil, as shown in Figure 3, except that being the inorganic porous material having every ridge 7 and water storage layer material on the water barrier mulch film, all the other are identical with embodiment 2.This mulch film that has every ridge is used in rolling topography more, guarantees water storage layer effect.Material every ridge is identical with the material of horizontal mulch film, and waterproof with horizontal mulch film thermo-compression bonding.Every ridge can be unidirectional every ridge or two-way every ridge, unidirectionally adapts to the landform of unidirectional slope change, the two-way undulating topography that is used to swell every the ridge mulch film every the ridge mulch film.
Embodiment 4
Sucking irrigation method with mulching under soil is laid water barrier 1 in the degree of depth soil layer bottom, the sand loam soil face of land that water penetration is stronger, and material is a mulch film, saves water storage layer and loaded filter above.Increase the layout water-permeable pipe on water barrier, the spacing of water-permeable pipe is looked the water penetration power of soil and is determined.Confession, drain ditch are replaced by fluid-tight main water supply pipe.The water-permeable pipe of arranging on main water supply pipe and the water barrier links to each other.The water level of going up in the overburden layer on the control water barrier can reach the effect of inhaling filling.
Embodiment 5
In the very strong sand loam soil of water penetration, use sucking irrigation method with mulching under soil, identical with embodiment 4, but on water barrier, do not arrange water-permeable pipe, supply water and adopt the water supply and sewage ditch on water barrier, to be communicated with soil by permeable wall 6.

Claims (5)

1, sucking irrigation method with mulching under soil, it is characterized in that: lay water barrier [1] in degree of depth soil layer bottom, the face of land, on water barrier, lay soil layer, lay water storage layer [2] above the water barrier, on the water storage layer, lay loaded filter [3], on loaded filter, lay soil layer [4].
2, sucking irrigation method with mulching under soil according to claim 1 is characterized in that: the water barrier material can be mulch film or geomembrane; The water storage layer material is rubble, inorganic porous material or permeable high molecular synthetic material; The loaded filter material is sand or geotextiles.
3, sucking irrigation method with mulching under soil according to claim 1 is characterized in that: the water storage layer is communicated with by permeable wall with confession, drain ditch.
4, sucking irrigation method with mulching under soil according to claim 1 is characterized in that: water barrier mulch film and the water storage fleece shape nylon wire structure that is combined into one.
5, sucking irrigation method with mulching under soil according to claim 1 is characterized in that: distribute every ridge [7] on the water barrier mulch film.
CNB021090793A 2002-01-22 2002-01-22 Sucking irrigation method with mulching under soil Expired - Fee Related CN1169422C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN1169422C true CN1169422C (en) 2004-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080999B (en) * 2007-07-12 2011-05-18 石青 Method and device for irrigating

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8256989B2 (en) * 2007-11-09 2012-09-04 Luxin (Green Planet) Ag Water-storage and water-purification system
RU2484619C1 (en) * 2011-12-26 2013-06-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") System of moistening, aeration and heating soil active layer of greenhouse
CN104005344B (en) * 2014-06-10 2016-02-10 山东大学 A kind of method of discharging roadbed capillary water
CN110934104B (en) * 2019-12-10 2021-12-10 丰城隆龙农业发展有限公司 Fish-light-vegetable complementary system based on V-shaped water flowing grooves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080999B (en) * 2007-07-12 2011-05-18 石青 Method and device for irrigating

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