CN101849453A

CN101849453A - Earth surface planting desert reforming technology

Info

Publication number: CN101849453A
Application number: CN200910000687A
Authority: CN
Inventors: 高清; 左余宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-04
Filing date: 2009-04-04
Publication date: 2010-10-06

Abstract

The invention discloses an earth surface planting desert reforming technology, which aims to provide a technology which can improve the soil texture of the desert, prevent and fix sands, and gradually reform a desertified land into a land with good-quality soil. The invention has the technical scheme that the technology is implemented at the edge part of the desert area to be reformed, the surface layer of sandy soil is cleared up, the lower bottom layer sand is appropriately added with water for tamping, a clay layer with the thickness of 0.15 m is filled on the bottom layer sandy soil, a planting soil layer with the thickness of 1.0 m is filled on the clay layer, plants are planted on the planting soil layer, and a mulching film is paved or a greenhouse is constructed on the earth surface so as to reduce quick water evaporation.

Description

A kind of earth surface planting improvement desert technology

Technical field

The present invention relates to a kind of improving desert technology, relate in particular to a kind of earth surface planting improvement desert technology.

Background technology

The China's desertization and the shifting of sand dunes soil gross area are 17.85% of territory total area.Wherein, 48.32 ten thousand square kilometres of desert areas, 71.07 ten thousand square kilometres of Gobi desert areas, 43.42 ten thousand square kilometres of wind erosion monadnock area, desert desertification areas.They mainly are distributed in 7 provinces and regions such as Xinjiang, Qinghai, Gansu, the Inner Mongol, Shaanxi, Jilin and Heilungkiang, and the desertization problem that this shows China is very serious.Though we know that our country is the maximum country of area that plants trees in the world, however perfect country also is one of the most serious country of desertification in the world, the area of desertification is the situation of sustainable growth, the speed of sand control is unable to catch up with the speed of desertification all the time, simultaneously directly related with China desertization problem is the sandstorm problem of China, China's sandstorm weather repeatedly took place in recent years, and the scope that involves is more and more wide, and the loss of causing for people's productive life is also more and more serious.Therefore defending and controlling sand is a difficult task of China.

At present because technology limited, China continues to use the mode of comparatively traditional artificial afforestration in the sand control process, though this mode is effective, but effect is limited, and method is single.

Summary of the invention

Single in method for solving China in the sand control process, the deficiency that the artificial afforestration effect is limited the invention provides a kind of earth surface planting improvement desert technology, can effectively improve the face of land, desert soil property, and can keep moisture and nutrient in the topsoil, guarantee the needs of plant growing.

The present invention realizes by following technical scheme: the improvement desert is at first from area, desertization edge, with bulldozer the top layer sand bed is cleaned out earlier, cleaning is to 1.1 meters of the underground degree of depth, bottom leveling land then, and with pounding the rammer machine is suitable must to add water compacting, per 50 meters is a width unit, both sides are slightly high, middle lower slightly, in the middle of the area, dig the ditch about wide 1 meter dark 0.3 meter, dig the back and in ditch, fill up rubble, as the drain ditch, then at the argillic horizon of upper berth, ground one deck 15 cm thicks of handling well, on argillic horizon, fill and plant soil layer, planting plantation crops or other plant on the soil layer, for avoiding the fast of water evaporates in the soil layer, need covering with plastic film, or build booth and plant.

The invention has the beneficial effects as follows: 1, help desert, check winds and fix drifting sand, can be fixed on the sandy soil layer under the plantation soil layer, prevent it with wind flow, after implantation time is long, the formation scale, just can forever sand be fixed under the figure layer, form the people and advance the situation that sand moves back; 2, help the people's lives production of husky district, earth surface planting can improve husky district peasant's economic benefit, improves local people's life, and people can be lived down in the locality for a long time, avoids migration; 3, help water saving,, can prevent that infiltrate is fast under the moisture because the bottom has one deck cement soil layer to play resistance effect, top plastic mulching or greenhouse gardening can prevent crop and between water evaporates too fast, therefore required duty is less; 4, help improving the soil, strengthen soil fertility,, be easy to fertilising, and fertilizer utilization efficiency is higher because of the plantation soil layer is thinner.

Description of drawings

The present invention is further illustrated below in conjunction with accompanying drawing.

Fig. 1 is the section of structure of present technique after implementing.

Fig. 2 collects the structure chart of well for rainwater.

Among the figure, 1, booth, 2, crops, 3, rain-harvesting trough, 4, plant soil layer, 5, argillic horizon, 6, the drain ditch, 7, the bottom sandy soil, 8, sump.

Embodiment

Referring to Fig. 1, implement from the area, edge in desert earlier in the improvement desert, earlier with bulldozer the top layer layer of sand being cleaned out earlier, cleaning is extremely about underground degree of depth 1.1m, bottom sandy soil 7 bottom leveling land then, and suitably add water compacting with pounding the rammer machine, every 50m is a width unit, and both sides are slightly high, and is middle lower slightly, dig ditch about one wide 1 meter dark 0.3 meter at the intermediate region of bottom sandy soil 7, dig the back and in ditch, fill up rubble, as drain ditch 6, and then the thick argillic horizon 5 of top, sandy soil 7 area shop one deck 0.15m, on argillic horizon 5, fill and plant soil layer 4, the thickness of planting soil layer 4 remains on about 1.0m, is planting on the soil layer plantation crops 2, and is too fast for avoiding in the soil layer water evaporates, need covering with plastic film, or build booth 1 and plant.

Implement this technology after a period of time, the desert soil property improves, and becomes can continue to use this technology behind the soil of suitable planting plant and continue to the desertization area deeply to continue to adopt in such a way, can progressively improve large-area desert region.

As realizing that two subject matters that present technique need solve are: 1. required topsoil and clay are more, need the 2. local rainfall of solution less, and the water source needs to ensure.

For first problem,, when below soil layer being arranged, can deep-cut following soil dug upper strata sand is buried as local sand bed thinner thickness; Thicker as local sand bed, must be from neighborhood muck haulage.Required clay obtains in the locality as far as possible, also can use other nontoxic impervious materials that block water instead and replace (as geotextiles, geomembrane etc.).For second problem, but the local water resource of comprehensive exploitation is actively built water diversion project.Science is arranged the recovery of subterranean well, actively collects rainwater, and water saving irrigation methods such as drip irrigation, little spray are adopted in area with good conditionsi.

Can implement smoothly in the few area of rainfall for cooperating present technique referring to Fig. 1, Fig. 2, a kind of method for arranging of sump 6 is provided here, planting of least significant end at booth 1 dug a water leg 3 on the soil layer 4, and digging out a sump 8 every a segment distance, like this when running into the rainy day, the not absorbent rainwater of soil flows in the sump 8 by water leg 3, is provided with the back and irrigates crops 2 or other purposes, has avoided rainwater to evaporate because of the saturated back of soil absorption and has slatterned.

Claims

1. an earth surface planting improves the desert technology, on the desert, plant plant, it is characterized in that the sand bed on top layer being removed with bulldozer in the area, edge in desire improvement desert earlier, be filled with one deck argillic horizon or other nontoxic impervious materials that blocks water then up, argillic horizon top is filled with plants soil layer, plant soil layer above plant plant.

2. a kind of earth surface planting improvement according to claim 1 desert technology is characterized in that with the bulldozer cleaning top layer sand degree of depth be 1-2 rice, and the best is 1.15 meters.

3. a kind of earth surface planting improvement according to claim 1 desert technology is characterized in that being provided with argillic horizon on the face of land after the cleaning, and its thickness is 0.1-0.5 rice, the best be 0.15 meter,

4. a kind of earth surface planting improvement according to claim 1 desert technology, when it is characterized in that plant planting, face of land covering with plastic film or construction booth are planted plant in booth.

5. a kind of earth surface planting improvement according to claim 1 desert technology is characterized in that for sand bed when more shallow, after deep soil can being dug out face of land sand bed is buried in undergroundly, reduces quantities.

6. a kind of earth surface planting improvement according to claim 1 desert technology is characterized in that for the few desert area of precipitation, can repair on the face of land at booth edge and establish water leg, the rainwater under the soil absorption is not stored in the sump, for need in the future.