CN101642034A

CN101642034A - Water seal cycle cultivation greenhouse

Info

Publication number: CN101642034A
Application number: CN200810145487A
Authority: CN
Inventors: 李世才
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-04
Filing date: 2008-08-04
Publication date: 2010-02-10

Abstract

The invention relates to a water seal cycle cultivation greenhouse, which is the breakthrough of key technology in the field of agricultural water conservation. The prior sprinkling irrigation or dripirrigation only reduce the amount of water supply, but do not focus on the main problem that the moisture accounting for 90 percent of the water supply is lost because of evaporation and seepage. Thewater seal cycle cultivation greenhouse mainly solves the problem that the moisture is lost and wasted and cannot be cycled to reuse. A method to solve the loss of water vapor is to surround the topand the periphery of a farmland by light-transmitted airtight plastic films to form a greenhouse. A method for reuse is to condense the water vapor in the greenhouse into a liquid state for reuse. A method for preventing the seepage of the moisture can lay an anti-seepage film under a soil layer, and also can precisely control the irrigation amount according to the detection of the soil humidity,so that the moisture can only seep to the deepest position in which a root system of a crop can reach without seeping downwards. The technology is called 'moisture detection water supply' and 'set-depth irrigation'. The 'water seal cycle cultivation greenhouse' can be commonly used in any arid and desert regions.

Description

Water seal cycle cultivation greenhouse

One. technical field:

Agricultural water conservation.

Two. technical background:

The present Chinese north and west area, agricultural planting water loss are still very big.With Xinjiang grain plantation is example, every mu wheat year water consumption be 700 cubes, adopt sprinkling irrigation, drip irrigation technique, every mu of water consumption is reduced to about 100 cubes.However save, to the Northwest of lack of water, water is still not enough.This just makes tract arid, desertization, and about 500,000 square kilometres desert, Xinjiang, Gobi desert can't be afforested, can't developing agricultural.To the water-deficient area, using water wisely can not fundamentally thoroughly be dealt with problems again.Because the water overwhelming majority of pouring has run off.In Xinjiang, the water about 60% in pouring farmland is evaporated in the atmosphere has escaped, and the water more than 30% is penetrated into deep under ground from soil, and crops really absorb the interior moisture of body less than 10%.So, the problem that no matter spray, drip irrigation or existing other technologies also can't resolve the 90% above water that runs off.Existing water-saving irrigation just reduces the output to the farmland, and does not solve a large amount of losses, these two key issues of seepage of the back steam that supplies water.

Three. summary of the invention:

" water seal cycle cultivation greenhouse " of my invention, purpose will thoroughly solve drain evaporation and these two key issues of infiltration loss exactly.The technical scheme that realizes " water seal " be the farmland of plantation from the sky to underground with the plastic film integrally closed, form a printing opacity and space confession crop growth that moisture can't be escaped.Do " circulation " of moisture used and how about realized? water absorbs in the body from crop root part, remove and retain a part in vivo and in vitro, major part has been evaporated from the blade face, becomes steam, also have moisture in a large amount of soil directly from evaporation from land surface, also become steam.So the technical measures that recycle that will realize water are exactly that liquefy water waters the farmland more again the liquefaction of the steam in the booth.And steam liquefaction is just passable with condensation at low temperature." condensation " must " low-temperature receiver " from what come again? from cold water.This can build a bigger cistern in a side backlight of booth windbreak.Because arid area, desert day and night temperature is big, night, water temperature can drop to lowlyer, and daytime is not by solar radiation.So form a huge water cooling pond, it just can be used as water vapor condensation must low-temperature receiver.Remaining work is exactly with air exhauster the hot steam on booth top to be blown in the water cooling pond to get final product.Be energy savings, air exhauster available wind air exhauster.Use the electric power air exhauster when calm, electric power provides with solar cell and gets final product.According to this technical scheme, I have designed " water seal cycle cultivation greenhouse ".As accompanying drawing.

Four. description of drawings:

A.. the structure of water seal cycle cultivation greenhouse:

1. the agric under the inner greenhouse ground face.Can apply various fertilizer according to the requirement of plantation crops.Soil thickness can be determined according to the darkest distance of this kind crops root system.As 0.5 meters, 1 meter, 1.5 meters ...

2. antiseepage film.With plastic film (, being difficult for puncturing) nontoxic, ventilative and fluid-tight, that the life-span is long as the breakage of can not wearing out in 5 years.

3. the water delivery house steward and the valve of drip irrigation in the booth.Can regulate the flow velocity of drip irrigation.

4. the ceiling at booth top.Plastic film good, high temperature resistant with light transmission, that be difficult for wearing out is made, and the life-span should be more than 5 years.

5. the wind air extractor of on the top of booth interior wall 8, installing, available power exhausting when calm.

6. the hole of bleeding on the interior wall.Steam-laden air in the booth is blown in cold (light) pond 12 through condenser pipe 7 in the hole thus.

7. condensate pipe.Be immersed in the water cooling pond 12, make water vapor condensation liquefaction.

8. booth interior wall.Mainly act as keep out the wind, load-bearing and reflective.Can adopt reflective membrane to smear covering at side to light.

9. the top standby solar battery group of installing.When sunlight is arranged the generating and be stored in the batteries standby.

10. between the ground of dwelling house.Use for the peasant who contracts booth.Dwelling house is built in underground, and is not only energy-conservation but also be incubated (not shown).

The ground operating room of underground biogas generating pit 11. battery room is held concurrently.

12. CFW storage cistern.Its water-storage capacity enough people in this booth, the consumption of half a year, about hundreds of～several kilosteres is prepared against and is survived the winter.

The effective cultivated area suggestion of whole booth is at 10～20 mu, so that contract for a peasant family.

B. the operation principle that recycles of water seal:

CFW splashes on the agric 1 of booth through valve input supply mains 3 grades.Because the irradiation of sunlight, a part is evaporated by the blade face that is raised to waterborne that crop root part absorbs in the body, and a part of water is from the directly evaporation of soil layer surface.The downward seepage of some water is stopped that by antiseepage film 2 this part water is trapped in the soil layer, makes the upper strata keep certain humidity, continues to use for crop root part.The steam temperature under irradiation of sunlight that is evaporated in the booth space raises, thereby rises to the top of booth.Because the stopping to escape in the atmosphere outside of ceiling film 4 goes.The steam (together with air) of wind air extractor 5 at the following top of wind drive that is located at the booth top is blown into the condenser pipe 7 from the hole 6 of bleeding, and condenses into water and flows in the cold pond 12, continues during for drip irrigation to use.This has just realized recycling of water.

When the kind of plantation or breed must be immersed in the aqueous water, as kind of a paddy rice, the shrimp of breeding fish, antiseepage film was to lay, but needn't worry the problem of anoxic in the water.Because what air exhauster 5 was blown in water cooling pond 12 is the mist of air and steam, wherein just contain a large amount of oxygen, these oxygen are dissolved in can flow in rice field or the crawl again in the CFW and form running water.

As a rule, as plantation wheat, corn, vegetables, herbage ..., can adopt " depthkeeping irrigation " technology.Promptly by accurate control irrigation quantity, make to splash in the soil layer this part water of infiltration downwards and can only be penetrated into the degree of depth place that this root system of plant can penetrate soil layer, just there is not unnecessary water to continue to have permeated downwards.The employing of this technology just can have been laid underground antiseepage film, and the labour intensity that this has not only alleviated when building canopy greatly also greatly reduce cost, and the water of crops is guaranteed not only, has also realized water saving to greatest extent.The realization of " depthkeeping irrigation " technology need be installed " humidity sensor " in soil layer, this is easy to accomplish.The simple approach of mechanical sensor uses " Luoyang Spade " soil sampling to observe exactly.The sensor of electronic type can be installed " electronics humidity sensor " at certain depth, and it can observe the humidity (water content) of different levels soil for a long time incessantly, realizes " according to the hygrometric reasonable water supply ".

Claims

In the agricultural production, existing now various booths.But, according to following five technical schemes design " water seal cycle cultivation greenhouse " is the intellectual achievement that I think independently.I require patent protection.

1. water seal technology.No matter promptly adopt which kind of booth, as long as begin to import moisture in the booth, with any form (gas, liquid, solid attitude) output, Here it is water seal.In the output of this mode of moisture that contains with the agricultural product body is not included in.Consume because this belongs to proper, need to replenish.Adopt the water seal technology, avoided the loss waste of water, saved water consumption widely.

2. water circulation operation technique.What the plantation pouring was used is aqueous water, and reusing after the vaporous water liquefaction, Here it is plants recycling of water.This water as the flow media in the growing process, nonexpendable basically technology can make the water circulation in the first injection booth use for many years, has improved the service efficiency of water greatly.

3. utilize wind energy, solar energy and aturally-cold water to make low-temperature receiver, make the technology of steam liquefaction.Use present technique not need man-made recovery's the energy (as coal, oil ...), not only reduced the liquefaction cost, and can move automatically for years.

4. long-life designing technique.The design service life of whole booth is about 30 years.Even if the operating running stores of booth-ceiling light-passing plastic film, service life also will reach more than 3 years.This is than only using the plastic sheeting for farm use life-span about 3 months also long more than 10 times on China's agricultural now.This long-life technology helps peasant's the plantation of contracting.

5. depthkeeping irrigation technique.Be exactly accurately to control irrigation quantity, make the water that infiltrates soil layer can only be penetrated into this kind crops root system and can penetrate underground bosom, do not have unnecessary water again to depths seepage more.Thisly prick the specification requirement protection that the native degree of depth is accurately controlled the quantity of pouring water according to the crops root system.This is the irrigation technique of economizing on water most that I propose first on the current agricultural water.

My independent design " water seal cycle cultivation greenhouse "; no matter the booth floor space is much, and no matter what kind construction material selects for use, and also how high the level no matter booth equipment is controlled automatically have; as long as used above-mentioned five technology simultaneously, all be the scope of my patent protection.Do not adopt other agricultural greenhouses of these five art designs not belong to the scope that my application is protected simultaneously.