CN101485275A - Sylvicultural method on argillaceous saline soil - Google Patents
Sylvicultural method on argillaceous saline soil Download PDFInfo
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- CN101485275A CN101485275A CNA2009100773973A CN200910077397A CN101485275A CN 101485275 A CN101485275 A CN 101485275A CN A2009100773973 A CNA2009100773973 A CN A2009100773973A CN 200910077397 A CN200910077397 A CN 200910077397A CN 101485275 A CN101485275 A CN 101485275A
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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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- Y02P60/40—Afforestation or reforestation
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Abstract
The invention discloses a muddy saline soil forestation method. The method comprises the following steps: 1) digging drainage ditches (1) and building platform fields(15); 2) digging plant pits (3) for land preparation; 3) setting salt insulating layers (4) and basal discs (9) in the plant pits; 4) preparing sand loam soil; 5) filling the pits and transplanting the nursery stock; and 6) carrying out the fostering management. The method solves the problem of muddy saline soil forestation and greening. Through the measures of salt discharge and blockage, the method reduces the salt content in the range of the plant root system. The basal disc orientated rootage technology promotes the development of the root system, facilitates the nutrients and water absorption and unilateral salt discharge of the root system, and creates a soil environment benefiting the growth of the plant. The forestation method improves the survival rate and preservation rate of the nursery stock, and has lower cost than that of pure alien soil forestation. The method is suitable for the forestation and greening and vegetation restoration projects in the muddy saline alkali land, and can be applied to the artificial construction mixed with manual work and mechanical work.
Description
Technical field
The present invention relates to a kind of method of forestation, particularly a kind of method of forestation of saline-alkali soil.
Background technology
The soil texture of shale solonchak is sticking heavy, unit weight is big, porosity is little, air capacity of soils is poor, bad hydraulic permeability, salt content height.Shale solonchak mainly is distributed in northern coastal region, be rich in the solubility salinity in the coastal saline-alkali soil, one meter with interior soil layer salt content generally more than 0.4%, Gao Zheke reaches 2～3%, even through desalination progressively and develop into various strands salty soils, in the subsoil of different depth, still saliferous degree that keeping more than 0.3% more.
Shale salt soil is not all opened up wasteland mostly at present, and multiform becomes the reed beach, only adopts flushing back plantation Dry crop in the higher part of physical features, or method improvement utilizations such as rice field-upland field rotation, jujube farming intercropping.Usually lower owing to physical features, impeded drainage, soil desalination difficulty, even if plant plant, output is also very low.It is very difficult to afforest.
Afforest on the ground at shale solonchak and to have following feature:
(1) contains the rich soluble salinity in the shale solonchak, mainly based on chloride.Because its salt content height influences plant growing, when soil salt content〉0.3% the time, most of plant undergrowths mainly contain minority plants such as reed, Chinese tamarisk and can grow on solonchak, or when salt content 0.6% most of hazard of plant death;
(2) soil is sticking heavy, and the subterranean water level height is generally at 0.5-3m.Supply water, feeder capability is poor, influences the absorption of root system to water and nutrient;
(3) water evaporates of shale solonchak is strong, and the solubility salinity often rises with soil moisture, can the accumulation of salt in the surface soil after the evaporation, make plant undergrowth, or root growth be to salt content〉0.3% soil layer, make hazard of plant and undergrowth or death;
(4) survival rate of shale solonchak afforestation the, storage rate is low, arboreal growth is slow;
(5) construction costs of shale solonchak afforestation is very high.
In order to overcome many difficult problems such as survival rate is low on shale solonchak, storage rate is low, arboreal growth is slow, following prophylactico-therapeutic measures commonly used is afforested on shale solonchak:
1, the row's of filling engineering such as measures such as closed drainage, irrigation and drainage by well.Be used for quickening to discharge the main of soil and underground water by the salinity under the pouring such as the desalinization of soil by flooding or leaching, irrigation, rainfall; The control subterranean water level is in the unlikely degree of depth that makes the soil salification; And can in time discharge excess water, the control band hydrologic(al) regime satisfies the requirement of crop to soil, moisture, air, nutrient, heat, reaches the purpose of the volume increase of improving the soil.But the waste to water resource is serious, causes secondary salinization easily;
2, platform bar field engineering is by raising mima type microrelief, and the control subterranean water level can be controlled the soil salinization and secondary salinization problem within the specific limits.Muddy coast adopts whole ground, bar field, the whole ground of raised fields, the whole ground of hollow place, repair press behind the raised fields rice disorderly, cover mountain skin soil, press husky; Plant arrow-leaved oleaster and technical measures such as plantation sesbania, sweet clover biological nitrogen fixation, can reduce soil salt content effectively, improved soil physical properties.Platform bar field engineering table top irrigate, irrigation canals and ditches draining soil local improving etc. organically combines.
3, ditch ridge engineering adopt ditching, ridging (little engineering of row spacing 0.5～1.5m) forms the mima type microrelief of salt displacement component differentiation for furrow width 0.5～1.0m, ditch depth 0.2m, the desalinization of soil by flooding or leaching of irrigating through furrow of micro-phreatic water, back of the body covering film collection rain anti-salt in ridge improves the physicochemical property of soil.
4, soil melioration engineering applies fertilizer on shale solonchak or saline land, improve soil physical properties.Fertilizer can replenish the soil nutrient material, strengthens drenching salt action simultaneously, reduces evaporation, suppresses the accumulation of salt in the surface soil, and the salinity in the soil is played abirritation, weaken the harm of salinity to plant, but the improvement cycle of applying fertilizer is long, and unmanageable easily takes place " accumulation of salt in the surface soil phenomenon ".
5, the local environment betterment works is improved the soil by change local microenvironment such as soil moved in to improve the original, face of land covering and slight irrigation engineerings, reduces surface evaporation, slows down the poly-effect of table of salinity, is that the adapt circumstance condition is created in arboreal growth.But the thickness of improving the soil in the local environment betterment works is general＜1m, and the Root Distribution degree of depth of trees is all greater than 1m, simultaneously under the situation that does not hinder the salt measure, salinity can occur and upwards return " accumulation of salt in the surface soil phenomenon ", improving the soil of thin layer can not be satisfied the needs of trees normal growth, and the cost height, the destruction of causing original land resources easily.
6, chemical control measure chemical modifying is a method commonly used during the saline land is administered, and uses chemical improvement agent and often can play the effect of getting instant result.As utilize Kang Dibao, asphalt emulsion etc. to carry out the improvement in saline land.But chemical improvement agent cost height has limited its large tracts of land in afforestation and has promoted the use of.
The prophylactico-therapeutic measures quantities of above-mentioned afforested project is big, and investment is big, the expense height, and effect is bad, is difficult for implementing.
Publication number is that the application for a patent for invention of CN101322470 discloses a kind of coast saline-alkali soil forestation method, comprises the steps: that A. trench digging builds the back of the body, builds collection rain bed; B. be provided with the collection rain and; C. dig plant pit, be provided with every salt deposit; D. choice of tree species and planting; E., the plant pit surface coating is set; F. field management, weeding in good time; Wherein: described trench digging is built the back of the body, and building collection rain bed step is that the trend that follows is alternation excavation afflux ditch with the line-spacing according to the design of afforestation seeding row spacing, dark 20cm～the 25cm of bottom of trench, the ground between arrangement back of the body ridge and the bottom of trench makes shallow v font groove, leveling makes real domatic, forms collection rain bed.Though the collection rain bed of building in this method of forestation and have the resistance salt functional every salt deposit, but it can not prevent " accumulation of salt in the surface soil phenomenon " that salinity from moving upward to moisture, and soil salt is greater than 0.3% in the tree root scope of its afforestation, the normal growth that is unfavorable for trees, even the growth of harm trees.
Summary of the invention
The objective of the invention is problem, the method for forestation in a kind of shale salt soil is provided at the prior art existence.The inventive method can reduce the salt content of root system of plant scope, promotes root system development, promotes absorption and the unidirectional salt discharge of root system to nutrient, moisture, reduces soil salt content, creates the soil environment that is beneficial to plant growing.
For realizing purpose of the present invention, one aspect of the present invention provides a kind of method of shale solonchak afforestation, comprising: 1) drainage trenching, build raised fields; 2) dig the whole ground of plant pit; 3) be provided with every salt deposit and basal disc; 4) preparation sandy loam; 5) plant nursery stock, fill out the cave; 6) tending management.
Wherein, the bottom of trench width is than being 2.5-4:1 on the raised fields original ground width of building and the drain ditch, and the width of raised fields original ground is 12-20m; The side slope in drain ditch is than being 1:1-1.25, and the degree of depth in drain ditch is that the hyposulculus bottom width degree in 1.5-2.0m drain ditch is 1.0-1.5m.
Wherein, step 2) plant pit described in is round table-like, and plant pit cave mouth diameter is 1.0-1.5m, and diameter is 0.5-1.0m at the bottom of the cave, and the cave is 1.0-1.2m deeply.
Particularly, when the plantation arbor, the cave mouth diameter of plant pit is 1.2-1.5m, diameter 0.5-1.0m at the bottom of the cave, the dark 1.0-1.2m in cave; When the plantation shrub, the cave mouth diameter of plant pit is 1.0-1.2m, diameter 0.5-0.8m at the bottom of the cave, the dark 1.0-1.2m in cave.
Wherein, setting comprises the steps: every salt deposit and basal disc described in the step 3)
A) plant pit bottom laying depth be 10-20cm every salt deposit;
B) along the inboard cave wall of plant pit, lay the plastic film sleeve basal disc that is difficult for degraded every the upper surface of salt deposit.
Particularly, describedly select in grit, slag, the coal ash one or more for use every salt deposit.Sidewise hole is offered in the side of described plastic film sleeve, and osculum is offered in its bottom.
Particularly, the number of described sidewise hole is 6-12, preferred 6-9; The aperture of sidewise hole is 2-3cm, preferred 3cm; The number of described osculum is 1-3, preferred 1; The aperture of osculum is 2-3cm, preferred 3cm.
Wherein, sidewise hole is opened in the middle and upper part of plastic film sleeve, promptly is opened on the plastic film sleeve in the dark 0.6m scope, to be preferably from the cave mouth to the cave on the plastic film sleeve in the dark 0.5m scope along plant pit cave mouth to the cave from plastic film sleeve; Described plastic film sleeve bottom is plastic film sleeve and the position that contacts every the salt deposit upper surface.
Wherein, sandy loam described in the step 4) comprises that volume ratio is soil moved in to improve the original and the shale solonchak of 3-6:1.
Particularly, soil moved in to improve the original is one or more in the sand, sandy loam, light loam beyond the planting site; Shale solonchak is that the salt content of planting site is lower than the topsoil of 0.6% (mass percentage content), and preferred salt content is lower than 0.3% topsoil.
Especially, the pH value of soil moved in to improve the original is 6-7.5, the content of organic matter〉0.5%, unit weight≤1.40g/cm
3
Wherein, filling out the cave described in the step 5) is that sandy loam and fertilizer are mixed, be configured to fill out cave soil after, insert in the plant pit, wherein the content of organic matter of filling out cave soil in each plant pit〉5% (mass percentage content), unit weight≤1.25g/cm
3
Particularly, step 5) also comprise fill up plant pit after, continuation is increased 20-40cm with the sandy loam of step 4) preparation on plant pit, preferred 30cm, use the shale solonchak that digs out when digging the cave to be trapped among the sandy loam periphery that exceeds plant pit then, the ridge is enclosed in formation, and makes real and enclose the ridge, encloses the ridge and is used to raise ground and is beneficial to draining salt discharge and the big cave of fixing plantation.
Wherein, the nursery stock described in the step 5) is selected arbor sapling or shrub sapling.
Particularly, described arbor is selected one or more in locust tree, Chinese scholar tree, willow, willow, silk tree, Ailanthus altissima, juniper, mulberry tree, arbor-vitae, Chinese pine, the midget crabapple; Described shrub is selected one or more in the rose of Sharon, cloves, shrubby flase indigo, feed mulberry, torch, Atyiplex canescen, the glossy privet.
Particularly, described arbor is selected more than the life in 2 years, and leading thread is greater than 1cm, root length strong sprout greater than 30 centimetres; Described shrub is selected more than the life in 2 years, and leading thread is greater than 0.5cm, root length strong sprout greater than 15 centimetres.
Wherein, the tending management described in the step 6) is spring drought season, and supplementary irrigation is watered 2 times, and 50-60kg waters at every turn in every cave.
Particularly, plant 1 year of nursery stock guarantees that soil moisture content is not less than 15%.
The method that the present invention afforests on shale solonchak has following advantage:
1, method of forestation of the present invention is applicable on salt content is higher than the saline land of 0.3% middle earth, heavy earth and afforests the trees of planting.
2, adopt this method of forestation on the saline land, to afforest, improved survival rate, reach 90-95%; The storage rate height reaches more than 90%; Seedling growth speed is fast, reaches 50-120cm/.
3, the inventive method afforestation expenses is low, is the 40-50% of simple soil moved in to improve the original afforestation expenses, has saved the cost of shale solonchak afforestation.
4, the inventive method is suitable in shale saline-alkali soil forestation greening and revegetation, and method of forestation is simple to operation, can be used for artificial and mechanical engagement artificial construction.
Description of drawings
The profile of the single plant pit of Fig. 1;
The vertical view of the single plant pit of Fig. 2;
The generalized section that Fig. 3 shale solonchak is afforested on the ground
The floor map that Fig. 4 shale solonchak is afforested on the ground
Description of reference numerals: 1, drain ditch; 2, bottom of trench under the drain ditch; 3, plant pit; 4, every salt deposit; 5, at the bottom of the plant pit cave; 6, enclose the ridge; 7, original ground; 8, field face; 9, basal disc; 10, plant pit inwall; 11, the new heap of raised fields is built soil layer; 12, oblique Tian Po; 13, cave mouth; 14, the dark 0.5m line in cave; 15, raised fields; 16, sidewise hole; 17, osculum;
Embodiment
Embodiment 1
Be described in detail in the step of the method for forestation of the arbor (locust tree) of planting on the shale solonchak with reference to the accompanying drawings.1, drainage trenching, build raised fields
As shown in Figure 3, raised fields 15 is made up of field face 8, slope 12, oblique field and drain ditch 1; The horizontal plane of raised fields 15 is rectangle.Build on raised fields 15 with the mound of drainage trenching 1, form new heap and build soil layer 11, excavation and filling side's balance, raised fields field face 8 exceeds raised fields original ground 7, exceeds original ground 30cm (being that the height that the new heap of raised fields is built soil layer 11 is 30cm).The last bottom of trench width of the width of raised fields original ground 7 and ditch is than being 3:1, and the raised fields side slope is 1:1.25, and the width of raised fields original ground 7 is the width between the drain ditch of raised fields 15 both sides.
The width of the raised fields original ground 7 of present embodiment is 15m, the degree of depth in drain ditch 1 is that (with the original ground is benchmark to 1.5m, it is dark to dig 1.5m downwards), the width of the 1 time bottom of trench 2 in drain ditch is 1.25m, the bottom of trench width is that 5m (promptly is benchmark with the original ground on the drain ditch, width on original ground is 5m), specific as follows:
At first measure out earlier the wide soil of 15m as the raised fields land used on the ground at the shale solonchak of intending afforestation, the width on this ground (15m) is the width of the original ground 7 of raised fields, then measure out the wide soil of 5m more respectively as the drain ditch land used on the both sides on this ground, dig downwards with the ground in the drain ditch then, form drain ditch 1, the soil of drainage trenching is filled out at the wide raised fields of 15m and is used on the ground, and the new heap that forms raised fields 15 is built soil layer 11.The shale solonchak of drainage trenching 1 is filled out on raised fields 15 original grounds 7, makes it increase 30cm (promptly new heap is built the height 30cm of soil layer 11), forms the field face 8 of raised fields.
2, dig whole ground, cave
According to the line-spacing of Forestation Design, the big cave 3 that spacing in the rows requires to dig the nursery stock of planting, big cave 3 is round table-like on raised fields 15, and top is big, and the bottom is little.
The diameter of the cave mouth 13 in the big cave 3 of present embodiment is 1.5m (being that the cave upper part diameter is 1.5m), 5 diameter 1.0m at the bottom of the cave, the dark 1.2m in cave.The line-spacing of locust tree afforestation is 4m, and spacing in the rows is 2m.
3, be provided with every salt deposit and basal disc
At first lay gravel in big 3 bottoms, cave, formation is every salt deposit 4, the upper surface of 5 grit layer is laid the plastic film sleeve that is difficult for degraded along the inboard cave wall 10 in big cave at the bottom of then from cave mouth 13 to the cave, form plastic film sleeve basal disc 9, osculum 17 is offered in the bottom of the plastic film sleeve basal disc 9 that contacts with the grit layer, to guarantee draining but accumulation of salt in the surface soil phenomenon can not occur; Simultaneously in the scope of the middle and upper part of plastic film sleeve basal disc 9 0.5m (promptly be the basal disc scope of 0.5m, as shown in Figure 2, from cave mouth 13 to the cave the dark 0.5m line 14) from the cave mouth to acupoint depth along the cave inboard cave wall 10 offer sidewise hole 16.Plastics basal disc adventitia can stop root system to Shenzhen Development Bank, promote root system mainly in basal disc, to grow, the side direction root of nursery stock can be along sidewise hole 16 growths of offering, to guarantee that the side direction root system grows, and avoids the harm of saline land to root system of plant in the scope of the low saline salinity from the cave mouth to the dark 0.5m in cave.
The thickness of the grit of laying in the present embodiment is 10cm; The thickness of plastic film sleeve basal disc is 0.1-0.12mm; The number of the osculum of offering in the basal disc bottom is 1, and the diameter of osculum is 3cm; The sidewise hole number of offering in the basal disc middle and upper part is 6-9, and the diameter of sidewise hole is 3cm.
4, preparation sandy loam
Is that the ratio of 3:1 mixes with soil moved in to improve the original (sand) and shale solonchak according to volume ratio, make sandy loam, wherein the soil moved in to improve the original sand derives from the farmland ground surface soil (being the soil of farmland 0-30cm soil layer) outside the planting site, its pH value is 6.8, the content of organic matter〉0.5% (mass percentage content), unit weight≤1.40g/cm
3, salt content is lower than 0.05%, and moisture content is 10%; Shale solonchak derives from the topsoil of planting site, it also can be near the topsoil (being near the soil of farmland 0-30cm soil layer planting site or the planting site) in the farmland planting site, salt content was lower than for 0.3% (mass percent contains), saliferous 0.3 gram in promptly per 100 gram shale solonchak).
5, fill out cave, the nursery stock of planting
1) according to each big cave meter, the sandy loam of preparing is mixed with fertilizer, mix thoroughly, form and fill out cave soil, the content of organic matter of wherein filling out cave soil 5%, unit weight≤1.25g/cm
3
2) select to fill out cave soil simultaneously and to insert in the big cave 3 during life in 3 years, leading thread plant big cave in time early winter greater than 1cm, root length greater than 30 centimetres locust tree strong sprout until filling and leading up big cave 3;
3) continue to fill out on big cave 3 with sandy loam, and make sandy loam exceed the field face 8 of raised fields, the height that exceeds is 30cm;
4) enclose the ridge 6 with digging the shale solonchak that digs out in the cave as what fill out that the cave exceeds raised fields 15 field faces 8 parts, and make real and enclose the ridge 6, enclose the ridge and be used to raise ground and be beneficial to draining salt discharge and the big cave 3 of fixing plantation.
6, tending management
The north spring drought season of 4-6 between the month, supplementary irrigation 2 times, 50kg waters at every turn in every cave.Wherein, the time interval that supplementary irrigation is watered decides according to the rainfall situation, guarantees that soil moisture content was not less than 15% in 1 year.
The plant survival rate of locust tree (arbor) of present embodiment is 94%, and storage rate reaches 92%, and seedling growth speed is fast, growth rate average out to 1.2m/.The present embodiment afforestation expenses is 235 yuan/cave (containing raised fields builds whole ground, digs ditch and transplanted seedling tree etc.), calculates with every mu 84 strain, and every mu of expense is 1.974 ten thousand yuan; And common saline land greening afforestation is with more than 4.0 ten thousand yuan.This method is 49.4% of common comprehensive soil moved in to improve the original afforestation expenses, has saved the cost of shale solonchak afforestation.
Except the nursery stock planted is a Chinese wax, the bore that digs the big cave 3 in whole ground, the cave process is 1.5m, and the cave base diameter is 0.5m, the dark 1.0m in cave; The number of the sidewise hole 16 of the middle and upper part of the plastic film sleeve of setting in salt deposit and basal disc process is 10-12, and the aperture is 2cm; To be lower than the volume ratio of the shale solonchak of 0.4% (mass percentage content) be outside the 5:1 for soil moved in to improve the original and local salt content in the preparation sandy loam process, and all the other are identical with embodiment 1.
The plant survival rate of Chinese wax (arbor) of present embodiment is 96%, and storage rate reaches 91%, and seedling growth speed is fast, and the annual average height of tree increases 1.1m/.The present embodiment afforestation expenses is 214 yuan/cave (containing raised fields builds whole ground, digs ditch and transplanted seedling tree etc.), and every mu of cost is 1.800 ten thousand yuan, is 45% of simple soil moved in to improve the original afforestation expenses, has saved the cost of shale solonchak afforestation.
Except digging the big cave bore of putting in order in the ground process in the cave is 1.0m, and the cave base diameter is 0.5m, and the dark 1.0m in cave, line-spacing are 3m, and spacing in the rows is 2.5m; Fill out the content of organic matter of filling out cave soil in each big cave in the process of cave〉5%, unit weight≤1.2g/cm3; The nursery stock of planting is selected life in 3 years, and leading thread is planted in time early winter greater than 15 centimetres cloves greater than 0.5cm, root length strong sprout, outside, all the other are identical with embodiment 1.
The plant survival rate of cloves (shrub) of present embodiment is 96%, and storage rate reaches 92%, and seedling growth speed is fast, and the annual average height of tree increases 0.5m/.The present embodiment afforestation expenses is 196 yuan/cave, every mu 89 strain, and 1.74 ten thousand yuan of every mu of expenses are 43.5% of simple soil moved in to improve the original afforestation expenses, have saved the cost of shale solonchak afforestation.
Except digging the big cave bore of putting in order in the ground process in the cave is 1.0m, and the cave base diameter is 0.5m, and the dark 1.0m in cave, line-spacing are 2m, and spacing in the rows is 2m; Fill out the content of organic matter of filling out cave soil in each big cave in the infall process of cave〉5%, unit weight≤1.20g/cm
3The nursery stock of planting is selected life in 2 years, leading thread greater than 0.5cm, root length greater than feed mulberry strong sprout of 15 centimetres outside the early spring, the time planted, all the other are identical with embodiment 1.
This reality 1 is executed the plant survival rate of feed mulberry of example and is respectively 98%, and storage rate reaches 95%, and seedling growth speed is fast, and the annual average height of tree increases 0.60m/.The present embodiment afforestation expenses is 116 yuan/cave, every mu 167 strain, and 1.94 ten thousand yuan of every mu of expenses are 48.5% of common comprehensive soil moved in to improve the original afforestation expenses, have saved the cost of shale solonchak afforestation.
Except digging the big cave bore of putting in order in the ground process in the cave is 1.0m, and the cave base diameter is 0.5m, and the dark 1.0m in cave, line-spacing are 2m, and spacing in the rows is 2m; Fill out the content of organic matter of filling out cave soil in each big cave in the infall process of cave〉5%, unit weight≤1.20g/cm
3 The nursery stock of planting is selected life in 2 years, leading thread greater than 0.5cm, root length greater than shrubby flase indigo strong sprout of 15 centimetres outside the early spring, the time planted, all the other are identical with embodiment 1.
This reality 1 is executed the plant survival rate of shrubby flase indigo (shrub) of example and is respectively 95%, and storage rate reaches 96%, and seedling growth speed is fast, and the annual average height of tree increases 1.1m/.The present embodiment afforestation expenses is 114 yuan/cave, every mu 167 strain, and 1.904 ten thousand yuan of every mu of expenses are 47.6% of common comprehensive soil moved in to improve the original afforestation expenses, have saved the cost of shale solonchak afforestation.
Claims (10)
1, a kind of method of shale solonchak afforestation comprises the steps:
1) drainage trenching (1), build raised fields (15);
2) dig the whole ground of plant pit (3);
3) in plant pit, be provided with every salt deposit (4) and basal disc (9)
4) preparation sandy loam;
5) plant nursery stock, fill out the cave;
6) tending management.
2, method of forestation as claimed in claim 1 is characterized in that being provided with as follows described every salt deposit (4) and basal disc (9):
A) plant pit bottom laying depth be 10-20cm every salt deposit (4);
B) along the inboard cave wall (10) of plant pit (3), go up every salt deposit (4) and to lay plastic film sleeve basal disc (9).
3, method of forestation as claimed in claim 2 is characterized in that described plastic film sleeve basal disc (9) side offers sidewise hole (16), and osculum (17) is offered in its bottom.
4, method of forestation as claimed in claim 3, the number that it is characterized in that described sidewise hole (16) are 6-12, and the aperture of sidewise hole is 2-3cm; The number of described osculum (17) is 1-3, and the aperture of osculum is 2-3cm.
5, as claim 2 or 3 described method of forestation, the thickness that it is characterized in that described plastic film sleeve basal disc (9) is 0.1-0.12mm.
6,, it is characterized in that sandy loam described in the step 4) comprises that volume ratio is soil moved in to improve the original and the shale solonchak of 3-6:1 as the arbitrary described method of forestation of claim 1 to 4.
7, method of forestation as claimed in claim 6 is characterized in that described soil moved in to improve the original is one or more in sand, sandy loam, the light loam; The salt content of described shale solonchak is lower than 0.6%.
8, as the arbitrary described method of forestation of claim 1 to 4, the bottom of trench width is gone up than being 2.5-4:1 in original ground (7) width and drain ditch (1) that it is characterized in that described raised fields (15), the raised fields side slope is than being 1:1-1.25, and raised fields original ground width is 12-20m, draining ditch depth 1.5-2.0m.
9, as the arbitrary described method of forestation of claim 1 to 4, it is characterized in that described plant pit (3) for round table-like, plant pit cave mouth (13) diameter is 1.0-1.5m, and (5) diameter is 0.5-1.0m at the bottom of the cave, and the cave is 1.0-1.2m deeply.
10,, it is characterized in that nursery stock selection arbor sapling or the shrub sapling described in the step 5) as the arbitrary described method of forestation of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100773973A CN101485275B (en) | 2009-02-19 | 2009-02-19 | Sylvicultural method on argillaceous saline soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100773973A CN101485275B (en) | 2009-02-19 | 2009-02-19 | Sylvicultural method on argillaceous saline soil |
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| CN110115188A (en) * | 2019-04-27 | 2019-08-13 | 李志东 | A kind of five resistances afforestation matching method |
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| CN111374020A (en) * | 2020-04-09 | 2020-07-07 | 上海市园林科学规划研究院 | Dredger fill afforestation process method |
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