CN103222409A - Salix psammophila cuttage afforestation method - Google Patents
Salix psammophila cuttage afforestation method Download PDFInfo
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/40—Afforestation or reforestation
Abstract
The invention discloses a salix psammophila cuttage afforestation method which comprises the following steps: 1, cutting selection: selecting straight salix psammophila seedling cuttings which can grow into wood within 2 to 3 years, and cutting into the cuttings with the length of 105-115 cm; 2, soaking, soaking for 4 to 6 days in water, wherein the water level does not exceed the top ends of the cuttings during the period of soaking; and 3, hole digging and planting: digging holes at the planting site, planting cuttings and watering at the same time, wherein exposed height of the cuttings is 10 cm during plantation. The method provided by the invention can better utilize moisture of wet sand layer of a sand dune, increases the capabilities of resistance to wind erosion and sand burying hazards at the construction initial stage of a salix psammophila forest, and meanwhile avoids scorching of the sprouts of cuttings caused by high-temperature sand on the surface layer of the sand dune, so that afforestation survival rate is high, and growth situation of seedling cuttings is favorable.
Description
Technical field
The present invention relates to a kind of salix monogolica cutting forset-plantation method.
Background technology
Salix monogolica is a kind of machaka or the dungarunga of Salicaceae Salix, 2 ~ 4 meters of Gao Keda, and the life-span is generally in 20 ~ 30 years.Salix monogolica is as the first-selected seeds of arid biogeographic zone especially sand ground afforestation, have weather-proof, characteristics such as anti-sand buries, and the planting by cuttings primary growth is rapid, and rudiment power is strong.No matter be the salix monogolica pure forest of planting separately, still with the mixed forest of other seeds collocation, salix monogolica is all being brought into play its irreplaceable effect with its good Physiological Ecology characteristic at growing area.
Salix monogolica still is one of important biological economy resource in its area, place; In recent years, along with the development of correlative study and the progress of evaluation and exploration technology, salix monogolica significantly promotes at the economic use value of its area, both can be used as fuel, it is again the important source material of braiding, papermaking, wood-based plate and bioenergy, be the important industrial timberland seeds in husky district, have good economic benefit.
Along with the extensive popularization of the increasingly mature of salix monogolica afforestation technology and various places salix monogolica afforestation successful experience, different salix monogolica new technique of afforestation also arise at the historic moment, and wherein water is a kind of new technology towards planting Liu Zaolin.Scouring force by water forms tree well, not only can reduce labour intensity, but also can save pouring sapling operation thereafter, can improve the survival rate of cutting significantly, particularly in the sand district, effect is remarkable, and this technology is also for providing precondition than the set cutting forset-plantation.
Because Desert Area noon and afternoon, surface sandy soil extreme temperatures was burnt seriously to the salix monogolica sprouting, it is serious that the sand of in addition eroding buries situation, the salix monogolica afforestation collocation method that neither one is appropriate, can influence the salix monogolica survival rate, or it is poor to cause surviving the back upgrowth situation, in addition dead.
Summary of the invention
In order to solve the aforementioned problems in the prior, the present invention is behind the technical key point and a large amount of tests of process of the reasonable salix monogolica afforestation of research, and research sums up a kind of salix monogolica cutting forset-plantation method that improves the salix monogolica survival rate.
Salix monogolica cutting forset-plantation method provided by the invention, step is: 1) select to transplant a cutting: select straight 2 ~ 3 years generation material salix monogolicas slender, be cut into the cutting that length is 105 ~ 115cm; 2) soak: be soaked in water 4 ~ 6 days, water did not have the cutting top between soak period; 3) digging the cave plants: dig the cave at planting-site, and the cutting of planting, cutting exposes and highly is 10cm to water simultaneously when planting.The afforestation time, multiselect was in spring.
The slender optimum in 2 ~ 3 years is planted as cutting, and its degree of lignification that the age of tree is big again is higher, and cuttage survival rate can reduce.The long salix monogolica of the 50 ~ 70cm of employing is transplanted a cutting and afforests more in producing at present, generally can not surpass 100cm, of the present invention studies show that, the length of transplanting a cutting is more than the 105cm, and its survival rate and growing state are all good than the cutting below the 100cm, but the above cutting of 115cm, though the cutting difference of afforestation effect and 105 ~ 115cm is little, but the plant hourly water consumption and the time of planting obviously increase, and are unfavorable for extensive operation, therefore select the cutting of 105 ~ 115cm comparatively suitable.Prior art shows, rooting powder solution or water logging bubble are transplanted a cutting and can both be improved the salix monogolica survival rate in various degree, but the mode that all adopts complete stool to soak, of the present invention studies show that, be exposed at outside the top in the air transplanting a cutting and only with the immersion of the part below the top, its planting survival rate and growing state are better than the cutting of complete stool immersion more.
Preferably, described cutting length is 110cm.The overall afforestation effect that the salix monogolica of this length is transplanted a cutting is best.
Preferably, the cutting soak time is 5 days.Soak time transplant a cutting at present during the commercial planting salix monogolica usually in 24 ~ 48h(1 ~ 2 day) in the scope, soak time is shorter, the suction of transplanting a cutting is insufficient, owing to only when cuttage, water one time water, later stage is substantially no longer carried out the manual watering, and the open-air dehydration that causes transplanting a cutting when the adventive root of also not growing enough is more serious.But long soaking time for example more than 7 days, then can cause tissue to rot in the immersion part breed bacteria of transplanting a cutting, and stops up cutting inner hydrophobic conduit, is unfavorable for the later stage cutting forset-plantation more.So comprehensive two aspect factors, it is 5 days that the present invention draws best soak time.
Preferably, the cutting immersion way is a vertical type, and 2/3 of the length of transplanting a cutting is soaked in water.
Preferably, method for planting is that every cave individual plant is planted.Transplant a cutting compared to the many strains of cuttage simultaneously of each hole of planting (cave), the method for planting of every cave individual plant not only can improve slender survival rate, has also saved large quantities of cutting, and then has reduced cost.
Preferably, planting density is 1m * 1m.Compare with the planting density that 2m * 2m, 2m * 3m and 2m * 4m are equidistantly bigger, the salix monogolica innovation is the longest under the density of 1m * 1m, and survival rate is the highest.
Preferably, the described cave of digging is to adopt the water jetting punching to dig the cave.Water jetting is the hole that utilizes the impulsive force of pressure water stream to get appropriate depth at planting-site, pour water simultaneously in the hole, directly cutting is inserted in the hole and bury real getting final product with sandy soil on every side again, whole process links up uninterrupted, save the amount of labour, also can not cause the water source loss simultaneously.
Preferably, lay at planting-site earlier before salix monogolica is planted and mix sand-protecting barrier, mixing sand-protecting barrier is formed by low vertical sand barrier and the laying of straw checkerboard barrier sand-protecting barrier intersection, described low vertical sand barrier is to be arranged by the salix monogolica rod to insert the latticed sand-protecting barrier that forms in the planting-site, and described straw checkerboard barrier sand-protecting barrier is the latticed sand-protecting barrier that is laid to by the wheat straw intersection.
Preferably, described salix monogolica rod length is 40cm, and the grid of low vertical sand barrier is 1.5m * 3m, highly is 15cm; The grid of straw checkerboard barrier sand-protecting barrier is 2m * 2m.
Compared with prior art, the present invention has following beneficial effect:
The present invention has solved following key issue preferably: it is 105 ~ 115cm that this method selects to transplant a cutting length, can utilize the sand dune sand bed moisture that wets preferably; Cutting exposes height at 10cm, can increase the salix monogolica woods and build the ability that weather-proof sand of initial stage buries harm, and the newborn twig that avoids simultaneously transplanting a cutting is subjected to burning of top layer, sand dune high temperature sandy soil; Part immersion is earlier transplanted a cutting before planting, and builds the required cutting of salix monogolica woods and takes the water degree.Method of the present invention is simple to operate, economy.
Description of drawings
Fig. 1 is that salix monogolica afforestation is laid floor map, and wherein S is a column pitch, and L is a line space;
Fig. 2 is that salix monogolica afforestation is laid elevational schematic view on the sand dune, and wherein h is that the salix monogolica cutting exposes height, and H is for transplanting a cutting total length;
Fig. 3 is that salix monogolica is transplanted a cutting the immersion way schematic diagram, and wherein L represents the length of transplanting a cutting;
Fig. 4 mixes the schematic layout pattern of planting salix monogolica after sand-protecting barrier is laid, and wherein the solid line grid is the straw checkerboard barrier sand-protecting barrier, and grid of dashed lines is low vertical sand barrier.
Embodiment
The invention will be further described below in conjunction with specific embodiment so that those skilled in the art the present invention may be better understood and can be implemented, but illustrated embodiment is not as a limitation of the invention.
Do a large amount of active dune in April, 2011 in its desert of cloth, storehouse, Erdos and built the experiment of salix monogolica woods, specific as follows:
Before afforesting spring, fell life in 2 ~ 3 years, the straight salix monogolica bar of becoming a useful person of slender health, and the salix monogolica bar is cut into the cutting of suitable length.
With the cutting that has cut, per 100 a bundle bundlings are uprightly put into tank or pond and are soaked (referring to Fig. 3), transplant a cutting to soak finish after, with the water jetting punching, the cuttage salix monogolica of planting, (as shown in Figure 1, 2, h is that the salix monogolica cutting exposes height among Fig. 2, and H is for transplanting a cutting total length to build the salix monogolica woods; L represents the length of transplanting a cutting among Fig. 3).Water jetting is to utilize pressure water stream to be injected in the planting-site, forms the hole of planting with certain depth, salix monogolica is transplanted a cutting insert in the hole of planting then, and with sandy soil landfill envelope is real on every side.Add up the result of the test of planting in mid-August, 2012, and use the account form of mean value to embody.
1. transplant a cutting when planting and expose height
Differently when planting transplant a cutting exposing and highly salix monogolica is survived and sprout tillers certain influence of growing on the ground, select to expose height and buries entirely from 0cm() test to the gradient scope of 15cm.Except that exposing height, all the other conditions are all identical.Transplant a cutting long 105cm, complete stool is soaked, soak time 6 days, and the water jetting punching is dug the cave and is planted planting density 2m * 2m, each planting hole cuttage two root cutting.The result is as shown in table 1, and the survival rate of transplanting a cutting when exposing 10cm and 15cm is all higher, but it is best to expose the upgrowth situation of 10cm, in general, selects to expose 10cm optimum salix monogolica and survives and grow.
Table 1 exposes the influence of highly salix monogolica being grown
| Cutting exposes height (cm) | Innovation long (cm) | Newborn branch diameter (mm) | The hat width of cloth (cm) | Plant height (cm) | Branch number (individual) | Survival rate (%) |
| 0 | 55.67 | 2.18 | 58.88 | 88.18 | 10.29 | 77.86% |
| 5 | 54.54 | 2.20 | 67.57 | 86.5 | 10.93 | 80.60% |
| 10 | 62.33 | 2.34 | 67.62 | 92.47 | 12.34 | 81.83% |
| 15 | 51.84 | 2.06 | 64.9 | 81.63 | 11.5 | 81.89% |
2. cutting length
Certain influence that different cutting length survive salix monogolica and sprout tillers grows, therefore, the inventor transplants a cutting to the salix monogolica in 60 ~ 150cm length range and has carried out the test of planting, and except that cutting length, all the other conditions are all identical.The complete stool of transplanting a cutting is soaked, soak time 4 days, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10cm, planting density 2m * 2m, each planting hole cuttage 1 root cutting.The result is as shown in table 2.The result shows: the long cutting survival rate of 110cm is the highest, and growing state is better than 100cm and following cutting, and the optimum salix monogolica survives and grows.
Table 2 cutting length is to the influence of salix monogolica growth
| Cutting length (mm) | Innovation long (cm) | Newborn branch diameter (mm) | The hat width of cloth (cm) | Plant height (cm) | Branch number (individual) | Survival rate (%) |
| 60 | 55.8 | 2.2 | 66.72 | 83.05 | 5.67 | 70.41 |
| 70 | 60.38 | 2.34 | 67.33 | 92.85 | 6.37 | 74.79 |
| 80 | 72.63 | 2.7 | 72.51 | 99.57 | 6.65 | 78.94 |
| 90 | 75.71 | 2.71 | 77.48 | 104.49 | 6.76 | 82.09 |
| 100 | 78.11 | 2.78 | 78.57 | 105.79 | 7.11 | 83.66 |
| 110 | 83.1 | 2.91 | 92.85 | 112.74 | 8.48 | 86.03 |
The inventor has also done the influence test of the cutting of 115cm, 120cm, 130 cm, 140 cm, 150 cm five kinds of length to the salix monogolica growth, the result shows: the salix monogolica survival rate of above-mentioned five kinds of cutting length and the salix monogolica of upgrowth situation and the long 110cm of cutting are more or less the same, the time and the water consumption of planting are obviously greater than the cutting of 6 kinds of length in the table 1 but above-mentioned five kinds of salix monogolica individual plants of transplanting a cutting length are planted, take all factors into consideration, the length of transplanting a cutting selects 110cm optimum.
3. immersion way
The immersion treatment of transplanting a cutting before afforestation salix monogolica is survived and grown significant effects, therefore, the cutting that the inventor soaks the different modes test of planting.Except that the processing mode difference, all the other conditions are all identical.Transplant a cutting long 110cm, soak time 4 days, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10 cm, planting density 2m * 2m, each planting hole cuttage two root cutting.Referring to table 3, wherein vertical immersion uprightly is dipped in the tank for transplanting a cutting, and the degree of depth of water is for transplanting a cutting 2/3 of length, and 1/3 length on cutting top exposes in the air.It is to transplant a cutting flat the crouching of complete stool to put into water and soak that horizontal soaks.The result shows: before active dune were built the salix monogolica woods, suitable cutting immersion way was that vertical type soaks.
Table 3 immersion way is to the influence of salix monogolica growth
| Immersion way | Plant height (cm) | Newborn branch diameter (mm) | Innovation long (cm) | Branch number (individual) | The hat width of cloth (cm) | Survival rate (%) |
| Do not have and soak | 123.12 | 3.75 | 95.02 | 9.13 | 83.82 | 80.2 |
| Vertical immersion | 142.86 | 4.65 | 110.03 | 10.34 | 88.26 | 89.65 |
| Horizontal soaks | 131.12 | 4.75 | 95.42 | 9.28 | 67.69 | 88.4 |
4. soak time
Except that immersion way, the soak time of transplanting a cutting before the afforestation survives salix monogolica and grows also significant effects, and the inventor will test to transplant a cutting and soak respectively the different time.Except that soak time, all the other conditions are all identical.Transplant a cutting long 110cm, vertical immersion, 1/3 length on top of transplanting a cutting exposes in the air, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10 cm, planting density 2m * 2m, each planting hole cuttage two root cutting.The result that finds finally to plant is slightly variant, and the result shows: before active dune were built the salix monogolica woods, suitable cutting soak time was 5 days (d).
Table 4 soak time is to the influence of salix monogolica growth
| Soak time (d) | Plant height (cm) | Newborn branch diameter (mm) | Innovation long (cm) | Branch number (individual) | The hat width of cloth (cm) | Survival rate (%) |
| 0 | 113.18 | 3.38 | 86.15 | 9.48 | 74.88 | 80.2 |
| 3 | 132.21 | 3.89 | 99.61 | 9.35 | 81.01 | 85.73 |
| 5 | 137.16 | 5.71 | 102.2 | 9.22 | 76.56 | 90.83 |
| 7 | 124.88 | 4.24 | 94.96 | 9.49 | 75.27 | 87.71 |
5. planting density
Suitable planting density, to the salix monogolica influence significantly that survives and grown, the inventor has carried out the test of planting of four groups of different planting densities.Except that planting density, all the other conditions are all identical.Transplant a cutting long 110cm, vertical immersion, 1/3 length on top of transplanting a cutting exposes in the air, soak time 5 days, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10cm, each planting hole cuttage two root cutting.See Table 5, the result shows: the planting density optimum salix monogolica of 1m * 1m survives and grows.
Table 5 planting density is to the influence of salix monogolica growth
| Planting density | Plant height (cm) | Newborn branch diameter (mm) | Innovation long (cm) | Branch number (individual) | The hat width of cloth (cm) | Survival rate (%) |
| 1m×1m | 134.01 | 3.88 | 104.61 | 10.38 | 77.97 | 91.11 |
| 2m×2m | 133.15 | 3.79 | 98.96 | 9.65 | 78.11 | 89.76 |
| 2m×3m | 120.68 | 5.48 | 89.33 | 9.23 | 74.72 | 89.64 |
| 2m×4m | 127.82 | 4.55 | 95.04 | 9.43 | 74.68 | 87.65 |
6. cuttage mode
Certain influence that the cutting number of every cave cuttage survives salix monogolica and sprout tillers grows, the inventor has designed two groups of tests and has carried out the research of planting hole cuttage cutting number.Except that the cuttage mode, all the other conditions are all identical.Transplant a cutting long 110cm, vertical immersion, 1/3 length on top of transplanting a cutting exposes in the air, soak time 5 days, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10cm, planting density 1m * 1m.Experimental result is as shown in table 6, and the result shows: each planting hole cuttage one root cutting optimum salix monogolica survives and grows.
Each planting hole cuttage branch number of table 6 is to the influence of salix monogolica growth
| Innovation long (cm) | Newborn branch diameter (mm) | The hat width of cloth (cm) | Plant height (cm) | Branch number (individual) | Survival rate (%) | |
| Every cave individual plant | 63.17 | 2.49 | 65.42 | 98.81 | 11.07 | 94.7 |
| The two strains in every cave | 57.03 | 2.15 | 62.46 | 86.76 | 6.08 | 89.86 |
7. laying sand-protecting barrier
Effectively the measure of checking winds and fixing drifting sand can reduce the husky harm that salix monogolica is caused of burying of eroding, salix monogolica is survived and sprout tillers certain influence of growing, and therefore, the inventor has also carried out the test of planting at the planting-site that is equipped with dissimilar sand-protecting barriers, except that the sand-protecting barrier type, other conditions are all identical.Transplant a cutting long 110cm, vertical immersion, 1/3 length on top of transplanting a cutting exposes in the air, soak time 5 days, the water jetting punching is dug the cave and is planted, transplant a cutting when planting on the ground to expose highly be 10cm, planting density 1m * 1m, each planting hole cuttage one root cutting.
Low vertical sand barrier adopts 40cm salix monogolica rod as material, arranges the insertion planting-site and forms latticed sand-protecting barrier, and the sand-protecting barrier height is 15cm, and the specification of each grid of sand-protecting barrier is about 1.5m * 3m; The straw checkerboard barrier sand-protecting barrier adopts wheat straw as material, will become the wheat straw cross arrangement of handle during laying, and part is pushed down fixing with sandy soil, and forming specification is the grid sand-protecting barrier of 2m * 2m; Mixing sand-protecting barrier is the (see figure 4) of being laid by low vertical sand barrier and straw checkerboard barrier sand-protecting barrier intersection, wherein low vertical sand barrier adopts 40cm salix monogolica rod as material, and the sand-protecting barrier height is 15cm, and the sand-protecting barrier specification is 1.5m * 3m, the straw checkerboard barrier sand-protecting barrier adopts wheat straw as material, and the sand-protecting barrier specification is 2m * 2m.
The result shows: the salix monogolica survival rate is the highest down to mix the sand-protecting barrier protection, and upgrowth situation is best, mixes the sand-protecting barrier protection and helps salix monogolica most and survive and grow, and sees Table 7.
The protection of table 7 sand-protecting barrier is to the influence of salix monogolica growth
| The sand-protecting barrier type | Plant height (cm) | Newborn branch diameter (mm) | Innovation long (cm) | Branch number (individual) | The hat width of cloth (cm) | Survival rate (%) |
| No sand-protecting barrier protection | 116.67 | 4.50 | 103.14 | 5.12 | 80.42 | 94.7 |
| Low vertical sand barrier | 127.75 | 4.95 | 107.25 | 7.34 | 95.57 | 95.2 |
| The straw checkerboard barrier sand-protecting barrier | 132.43 | 5.72 | 118.38 | 7.53 | 93.71 | 95.1 |
| Mix sand-protecting barrier | 150.33 | 5.96 | 120.57 | 8.44 | 99.61 | 97.3 |
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art are done on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (9)
1. a salix monogolica cutting forset-plantation method is characterized in that, step is: 1) select to transplant a cutting: select straight 2 ~ 3 years generation material salix monogolicas slender, be cut into the cutting that length is 105 ~ 115cm; 2) soak: be soaked in water 4 ~ 6 days, water did not have the cutting top between soak period; 3) digging the cave plants: dig the cave at planting-site, and the cutting of planting, cutting exposes and highly is 10cm to water simultaneously when planting.
2. salix monogolica cutting forset-plantation method according to claim 1 is characterized in that, described cutting length is 110cm.
3. salix monogolica cutting forset-plantation method according to claim 2 is characterized in that, the soak time of transplanting a cutting is 5 days.
4. salix monogolica cutting forset-plantation method according to claim 3 is characterized in that, the cutting immersion way is a vertical type, and 2/3 of the length of transplanting a cutting is soaked in water.
5. salix monogolica cutting forset-plantation method according to claim 4 is characterized in that, method for planting is that every cave individual plant is planted.
6. salix monogolica cutting forset-plantation method according to claim 5 is characterized in that, planting density is 1m * 1m.
7. salix monogolica cutting forset-plantation method according to claim 6 is characterized in that, the described cave of digging is to adopt the water jetting punching to dig the cave.
8. salix monogolica cutting forset-plantation method according to claim 1, it is characterized in that, lay at planting-site earlier before salix monogolica is planted and mix sand-protecting barrier, mixing sand-protecting barrier is formed by low vertical sand barrier and the laying of straw checkerboard barrier sand-protecting barrier intersection, described low vertical sand barrier is to be arranged by the salix monogolica rod to insert the latticed sand-protecting barrier that forms in the planting-site, and described straw checkerboard barrier sand-protecting barrier is the latticed sand-protecting barrier that is laid to by the wheat straw intersection.
9. salix monogolica cutting forset-plantation method according to claim 9 is characterized in that, described salix monogolica rod length is 40cm, and the grid of low vertical sand barrier is 1.5m * 3m, highly is 15cm; The grid of straw checkerboard barrier sand-protecting barrier is 2m * 2m.
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| CN104412885A (en) * | 2013-08-26 | 2015-03-18 | 亿利资源集团有限公司 | Moisture-carrying and planting method of salix psammophila |
| CN104652402A (en) * | 2015-01-16 | 2015-05-27 | 中国农业大学 | Composite sand-protecting barrier |
| CN104938291A (en) * | 2014-03-31 | 2015-09-30 | 徐军 | Method for achieving waste mountain afforestation by using pine tree cutting seedlings |
| CN107637368A (en) * | 2017-11-14 | 2018-01-30 | 阿拉善盟源辉林牧有限公司 | A kind of method for planting salix monogolica using desert micro-moisture, dust storm |
| CN108887055A (en) * | 2018-06-20 | 2018-11-27 | 内蒙古库布其沙漠技术研究院 | A kind of method of moving dunes windward slope afforestation |
| CN114402820A (en) * | 2021-11-30 | 2022-04-29 | 辽宁工程技术大学 | Vegetation recovery method for loess area dump slope |
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| CN108887055A (en) * | 2018-06-20 | 2018-11-27 | 内蒙古库布其沙漠技术研究院 | A kind of method of moving dunes windward slope afforestation |
| CN114402820A (en) * | 2021-11-30 | 2022-04-29 | 辽宁工程技术大学 | Vegetation recovery method for loess area dump slope |
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