CN1799330A

CN1799330A - Well sinking type desert planting method

Info

Publication number: CN1799330A
Application number: CN 200510022469
Authority: CN
Inventors: 梁德富
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2005-12-30
Filing date: 2005-12-30
Publication date: 2006-07-12
Anticipated expiration: 2025-12-30
Also published as: CN100340157C

Abstract

The treatment of desert is an accepted difficult problem, and the basic way is to plant trees, but because of the hostile geographic environment and climate environment, the various method for tree planting is labor and water wasting and with low survival rate. The invention provides a sunk well tree-planting method in desert, making use of special sunk well for tree-planting, developing an ideal environment for the young tree-planting and survival, which is not only time and water saving, but also increases the tree survival rate to above 90%.

Description

Well sinking type desert planting method

One, technical field

The present invention relates to method of tackling desert, particularly relate to a kind of well sinking type desert planting method that can be used for desert afforestation.

Two, background technology

According to TV station's report, in China, just with annual more than 2,000 square kilometre speed expansion, the desert is become on the territory of China existing 28.6% at present in the desert.Yet the improvement in desert but is a difficult problem of generally acknowledging together, and reason is that desert harsh climate and geographical environment have caused the difficulty of planting trees.The main difficult point of planting in desert is: the one, and water resource is in great shortage, needs pouring repeatedly just can survive and whenever plant one tree, therefore both can cause the serious waste of water resource, and is also unrealistic; The 2nd, the desert climate drying, the evaporation discharge of tree is big, and this has just strengthened the demand of water and has reduced the survival rate of tree simultaneously; The 3rd, because the sand bed in desert is thick and present the drift sand state, thus be difficult to dig out dark hole when planting trees, so that the hole bottom does not reach the wet soil layer, this is in the dry sand layer with regard to the root that causes sapling, the rapid seepage of water meeting under watering, and, finally cause the withered of sapling by the husky contention of on every side dried; The 4th, the sapling foundation shakiness of newly planting is difficult to keep out the dust storm in desert and is blown down or be pulled up, and does not still have a kind of known method at present for the problems referred to above and can properly settle simultaneously.

Three, summary of the invention

The purpose of this invention is to provide the special-purpose open caisson of a kind of well sinking type desert planting method and planting in desert, can reach by disposable field planting and disposable pouring with the tree planting that realizes desert area and just can guarantee the effect that it survives.

The object of the present invention is achieved like this: make open caisson with engineering plastics earlier, the diameter range of open caisson is at 0.5～1.2m, length range is at 0.5～1.2m, the open caisson diameter of same model is consistent with length, wall thickness is at 3～5mm, open caisson one end is straight mouthful, and the other end is a double-wall structure apart from the part of end face 2～3cm, and the two-layer wall thickness of the double walled all wall thickness with straight drum part is identical.Between two layers of walls, form a cannelure, the consistency of thickness of the width of cannelure bottom land and same model open caisson straight drum part, the width of cannelure oral area is then greater than the bottom, to guarantee that straight tube end can insert in the cannelure smoothly, open caisson is settled in the region of selected then sand bed thickness below 2.5m, its operation is as follows: stand on the straight tube end of open caisson on the Shamian Island down, people's both feet step down in the open caisson mouth along both sides, for the open caisson of diameter greater than 0.8m, then keep flat a plate at well head, the people station onboard, a hand-held long handle metal wooden dipper stretches in the well draws out sand, along with husky constantly being drawn out in the well, open caisson constantly sinks under the effect of human body weight, when the open caisson upper edge is equal with Shamian Island, overlapping more next open caisson, with same method open caisson is sunk again, end opening up to open caisson arrives face on the spot, if the face soil layer is too dry on the spot, can allow open caisson sink again up to see wet soil is arranged till, open caisson is suitable for reading at last then must exceed more than the Shamian Island 30cm, and after arriving soil layer, drawing the instrument that digs must increase by a long handle clink.Be selected in the daytime maximum air temperature opportunity of planting below 20 ℃, night, the minimum air temperature was in the early spring more than 3 ℃, earlier seedling to be planted trees is pruned before the field planting, enable to fall into smoothly open caisson bottom and top and be lower than open caisson 20～30cm suitable for reading, and then return earth in the well and make root buried, water the back with a thickness greater than 0.05mm's, the diameter isolated film consistent with the open caisson internal diameter cut a road junction along arbitrary radius, and cut a hole consistent in the centre with the butt diameter, this film is covered on the wet soil of butt, in well, return the sand of 20-30cm thickness again, it is suitable for reading then to seal open caisson with a thickness greater than the light-passing plastic film of 0.05mm again, and be embedded in mouthful end cannelure to fix this sealing film with flexible sealing strip, and on film, open the air-vent that diameter is 1～5cm, follow the open caisson sidewall that firmly exposes with the black thin film pipe box, and dig the degree of depth respectively in the open caisson both sides and be not less than the groove that 0.5m length is not less than 3m, allow an end of two grooves be intersected in the uptake of open caisson, the other end then launches along the open caisson both sides, with the guiding drift sand, thereby avoid piling up at the open caisson place, when treating that the sapling top tip arrives well head, throw off the film of well head, and before crown diameter surpasses the open caisson diameter with hook with open caisson a section pull out so that reuse.

Adopt such scheme can receive following remarkable result:

1, because the open caisson technology of this programme, can be easily with the sapling field planting in the wet soil layer, and avoided seepage and done the husky moisture of fighting on every side;

2, because the isolation and the moisture-keeping function of the borehole wall and top film, this has just manually built the ecotopia of the most suitable sapling growth in utmost point rugged environment, this environment even surpassed the conventional environment of planting trees interiorly, because evaporation discharge is effectively controlled, high humidity in the well just can guarantee that it survives so only need to water a normal root water when field planting;

3, owing to the isolation of well, extraneous dust storm does not affect the normal growth of sapling in the well fully;

4, desertification of land originally is a bad thing, but see dialectically, because the capillary of dry sand layer is destroyed, evaporation is contained, makes it keep the humidity of soil under the sand bed, and stops desertification to deep subsoil time development, so in case with the sapling field planting at the wet soil layer, after surviving, the thick dry sand layer in top just can play excellent shielding effect, and the later stage life condition of sapling is ensured.

5, because this programme can expand the tree planting region to the area that sand bed thickness reaches 2.5m, this will make afforestation be achieved to the target that the innerland, desert advances.

6, because desert area is strong sunshine, add good printing opacity, heat absorption, the heat-insulating property of film of well head, can make the interior temperature of open caisson be higher than outside air temperature 3-10 ℃, thereby can make the starting point of tree planting time do sth. in advance 10-15 days.

7,, can make in the groove wind speed wind speed that is above the ground level, thereby avoid drift sand to pile up effectively on the well limit owing to dug lambdoid guiding gutter at the uptake of well.

8, owing to the ultraviolet screener effect of black thin film pipe, can prolong the service life of open caisson greatly, open caisson can repeatedly be used repeatedly.

9, owing to thoroughly improved the growing environment of sapling, so the range of choice of sapling kind can enlarge greatly, this has created very advantageous conditions for building desert economic forest and orchard.

10, adopt this law to plant trees, the survival rate of sapling is brought up to more than 90%, also can significantly reduce the daily management mission amount before treelet survives.

Four, description of drawings

Fig. 1 is the structure chart of the special-purpose open caisson of planting in desert.

Among the figure: 1 open caisson, 2 light transmission films, 3 sealing strips, 4 black thin films, 5 isolated films

Five, embodiment

Earlier make open caisson with engineering plastics, the diameter of open caisson is got 0.8m, length 0.8m, and wall thickness is got 3mm, and open caisson one end is straight mouthful, and the other end is a double-wall structure apart from the part of end face 3cm, and the two-layer wall thickness of the double walled all wall thickness with straight drum part is identical.Between two layers of walls, form a cannelure, the width of cannelure bottom land is 3mm, the width of cannelure oral area is then got 3.5mm, open caisson is settled in the region that selected sand bed thickness is 1.2m, its operation is as follows: stand on the straight tube end of open caisson on the Shamian Island down, people's both feet step down in the open caisson mouth along both sides, a hand-held long handle metal wooden dipper stretches in the well draws out sand, along with husky constantly being drawn out in the well, open caisson constantly sinks under the effect of human body weight, when the open caisson upper edge is equal with Shamian Island, overlapping more next open caisson, with same method open caisson is sunk again, arrive face on the spot, if the face soil layer is too dry on the spot up to the end opening of open caisson, can allow open caisson sink again up to see wet soil is arranged till, open caisson is suitable for reading at last then must exceed more than the Shamian Island 30cm, and after arriving soil layer, drawing the instrument that digs must increase by a long handle clink.Be selected in the daytime maximum air temperature opportunity of planting below 20 ℃, night, the minimum air temperature was in the early spring more than 3 ℃, earlier seedling to be planted trees is pruned before the field planting, enable to fall into smoothly open caisson bottom and top and be lower than open caisson 20～30cm suitable for reading, and then return earth in the well and make root buried, watering back is 0.06mm's with a thickness, the diameter isolated film consistent with the open caisson internal diameter cut a road junction along arbitrary radius, and cut a hole consistent in the centre with the butt diameter, this film is covered on the wet soil of butt, in well, return the sand of 30cm thickness again, it is suitable for reading that the light-passing plastic film that is 0.06mm with a thickness is more then sealed open caisson, and be embedded in mouthful end cannelure to fix this sealing film with the black rubber sealing strip of cross section diameter 3.3mm, and on film, open the air-vent that diameter is 1cm, follow the open caisson sidewall that firmly exposes with the black thin film pipe box, and dig the groove that the degree of depth is 0.5m length 3m respectively in the open caisson both sides, allow an end of two grooves be intersected in the uptake of open caisson, the other end then launches along the open caisson both sides, with the guiding drift sand, thereby avoid piling up at the open caisson place, when treating that the sapling top tip arrives well head, throw off the film of well head, and before crown diameter surpasses the open caisson diameter with hook with open caisson a section pull out so that reuse.

Claims

1, a kind of well sinking type desert planting method, it is characterized in that: make open caisson with engineering plastics earlier, the diameter range of open caisson is at 0.5～1.2m, length range is at 0.5～1.2m, the open caisson diameter of same model is consistent with length, wall thickness is at 3～5mm, open caisson one end is straight mouthful, the other end is a double-wall structure apart from the part of end face 2～3cm, the two-layer wall thickness of the double walled all wall thickness with straight drum part is identical, between two layers of walls, form a cannelure, the consistency of thickness of the width of cannelure bottom land and same model open caisson straight drum part, the width of cannelure oral area is then greater than the bottom, open caisson is settled in the region of selected then sand bed thickness below 2.5m, its operation is as follows: stand on the straight tube end of open caisson on the Shamian Island down, people's both feet step down in the open caisson mouth along both sides, for the open caisson of diameter greater than 0.8m, then keep flat a plate at well head, the people station onboard, a hand-held long handle metal wooden dipper stretches in the well draws out sand, along with husky constantly being drawn out in the well, open caisson constantly sinks under the effect of human body weight, when the open caisson upper edge is equal with Shamian Island, overlapping more next open caisson, with same method open caisson is sunk again, end opening up to open caisson arrives face on the spot, if the face soil layer is too dry on the spot, can allow open caisson sink again up to see wet soil is arranged till, open caisson is suitable for reading at last then must exceed more than the Shamian Island 30cm, after arriving soil layer, draw the instrument that digs and to increase by a long handle clink, be selected in the daytime maximum air temperature opportunity of planting below 20 ℃, night, the minimum air temperature was in the early spring more than 3 ℃, earlier seedling to be planted trees is pruned before the field planting, enable to fall into smoothly open caisson bottom and top and be lower than open caisson 20～30cm suitable for reading, and then return earth in the well and make root buried, water the back with a thickness greater than 0.05mm's, the diameter isolated film consistent with the open caisson internal diameter cut a road junction along arbitrary radius, and cut a hole consistent in the centre with the butt diameter, this film is covered on the wet soil of butt, in well, return the sand of 20-30cm thickness again, it is suitable for reading then to seal open caisson with a thickness greater than the light-passing plastic film of 0.05mm again, and be embedded in mouthful end cannelure to fix this sealing film with flexible sealing strip, and on film, open the air-vent that diameter is 1～5cm, follow the open caisson sidewall that firmly exposes with the black thin film pipe box, and dig the degree of depth respectively in the open caisson both sides and be not less than the groove that 0.5m length is not less than 3m, allow an end of two grooves be intersected in the uptake of open caisson, the other end then launches along the open caisson both sides, when treating that the sapling top tip arrives well head, throw off the film of well head, and before crown diameter surpasses the open caisson diameter with hook with open caisson a section pull out.