CN111264339A - Spray-seeding matrix for rush, spray-seeding method and application thereof - Google Patents
Spray-seeding matrix for rush, spray-seeding method and application thereof Download PDFInfo
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- CN111264339A CN111264339A CN202010056237.7A CN202010056237A CN111264339A CN 111264339 A CN111264339 A CN 111264339A CN 202010056237 A CN202010056237 A CN 202010056237A CN 111264339 A CN111264339 A CN 111264339A
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- 239000011159 matrix material Substances 0.000 title claims abstract description 51
- 238000010899 nucleation Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 31
- 241000287828 Gallus gallus Species 0.000 claims abstract description 24
- 210000003608 fece Anatomy 0.000 claims abstract description 24
- 239000010871 livestock manure Substances 0.000 claims abstract description 24
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 239000002028 Biomass Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 241000196324 Embryophyta Species 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000001913 cellulose Substances 0.000 claims description 14
- 229920002678 cellulose Polymers 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 11
- 238000011065 in-situ storage Methods 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- 229920005610 lignin Polymers 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- 238000000197 pyrolysis Methods 0.000 claims description 7
- 240000008042 Zea mays Species 0.000 claims description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 5
- 235000005822 corn Nutrition 0.000 claims description 5
- 240000007594 Oryza sativa Species 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 241000209140 Triticum Species 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000004083 survival effect Effects 0.000 abstract description 17
- 239000002689 soil Substances 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 7
- 230000009466 transformation Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000012010 growth Effects 0.000 description 11
- 239000010902 straw Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 230000007226 seed germination Effects 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000735470 Juncus Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000004181 pedogenesis Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/17—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing slag
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/23—Wood, e.g. wood chips or sawdust
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
A spraying substrate of medulla Junci and its spraying method and application are disclosed, wherein the spraying substrate comprises the following raw materials (by weight portion): 25-80 parts of rush seeds, 100-200 parts of chicken manure biochar, 240-900 parts of sawdust, 50-170 parts of magnetite, 1550 parts of plant biomass and 3500 parts of tailings. The invention uses the rush seeds to prepare the spray-seeding matrix material, thus expanding the application of the spray-seeding matrix material in acid tailing waste land; the addition of the chicken manure and the magnetite ensures that the substrate has good heat capacity and can resist frost disasters; the saw dust is loosened and ventilated to create a microenvironment, magnetite, biochar and the like drive the crystalline phase transformation of the iron oxide, the soil forming process is accelerated, and the adaptability and the survival rate of plants are enhanced. The method is suitable for ecological restoration of extreme geographical positions and environments, and solves the problem of acid tailings.
Description
Technical Field
The invention belongs to the technical field of environmental remediation, and particularly relates to a rush spray-seeding matrix material.
Background
The land pollution situation in China is very severe, wherein the occupation ratio of tailings is up to one third, the ecological and humanistic environment is threatened by serious soil pollution, and because the ores are symbiotic with multiple components, the backward mineral separation technology causes serious resource waste and collapse; acid mine wastewater; and (5) water and soil loss. Vegetation coverage is the most potential restoration method in dust control; erosion by wind and water; plays an important role in ecological restoration. For acid tailings, compared with soil, adverse conditions such as low aeration, high heavy metal content, low organic matter content and the like affect plant growth.
The rush has the application advantages of fast growth, large seed yield, wide diffusion range, high heavy metal enrichment coefficient and strong vitality, and can be applied to ecological restoration. The living environment of the rush is that: the tailings pond is seriously polluted by heavy metals and is wholly acidic (the pH value ranges from 2 to 7), and the nutrient loss caused by the extreme environment is serious. Organic matter is lost, so that nitrogen, phosphorus and potassium elements are sealed and stored in a state that plants cannot be utilized, and the micro-ecological circle cannot be started. In the prior art, the acidification of tailings is improved by means of neutralization and the like to realize the vegetation recovery, but the prior art has the risk of alternately resisting acid in a dry mode and a wet mode, and a single repair means is very popular. An ecological restoration method (CN 107347402A) for a strongly acidic tailing waste land is characterized in that compound fertilizers, organic fertilizers and artificial soil are used for covering foreign soil, so that soil acidity is improved, the method is used as an improvement of a main restoration method and is applied to restoration of acidic tailings, the tailings exist as primary minerals, secondary effects of addition of the tailings are not clear, and transformation of mineral crystal forms cannot be controlled. Finding a way to reduce the risk of application; in-situ application; the repair method which saves investment and engineering amount is particularly necessary. At present, no report that the pioneer plant rush substrate is sprayed and applied to vegetation recovery of acid tailing waste land in situ is found.
Disclosure of Invention
The first purpose of the invention is to provide a rush pith (Juncus ochracea Buchen) spray-seeding matrix material, which not only solves the difficult problem of green-recovering application in the acid tailing waste land, but also can adapt to the geochemical change of the extreme environment; the second purpose is to provide a spraying method of the spraying substrate of the rush; the third purpose is to provide the application of the spraying seeding matrix of the rush.
The first purpose of the invention is realized by the following raw materials in parts by weight:
25-80 parts of rush seeds, 100-200 parts of chicken manure biochar, 240-900 parts of sawdust, 50-170 parts of magnetite, 1550 parts of plant biomass and 3500 parts of tailings.
Preferably, the chicken manure biochar is prepared by anaerobic pyrolysis of dry chicken manure at 300-400 ℃, and the phosphate content is 4-12%.
Preferably, the content of the sawdust lignin is 25-40%, and the content of the cellulose is 15-30%.
Preferably, the plant biomass is one or more of corn straw, rice straw and wheat straw, and the cellulose content is 35-67%.
Preferably, the tailings are in-situ tailings of a site to be sprayed and sowed, and the pH of the tailings is 2-6.
Preferably, the mesh number of the magnetite and the tailing is more than 100 meshes.
The second purpose of the invention is realized by uniformly mixing the raw materials of the spray seeding matrix according to the parts by weight, and then adding water to stir to form spray seeding matrix slurry with the concentration of 50-70%.
The third purpose of the invention is realized by that the application field of the spray seeding material is an acid tailing waste field with the pH value of 2-6.
Preferably, the application method comprises the following steps:
A. uniformly spraying a spray-seeding matrix material with the concentration of 50-70% on the waste land of the acid tailings to be treated, and covering the waste land with the thickness of 4-7 cm;
B. and (3) supplementing water to the spray seeding matrix material covered in the step A, keeping the water amount to be 35% of the maximum water holding amount, and supplementing water 1-2 times every week for 3 weeks.
The invention has the beneficial effects that:
1. the invention uses the rush seeds to prepare the spray-seeding matrix material, thus expanding the application of the spray-seeding matrix material in acid tailing waste land; meanwhile, the rush is used as the dominant species of the acid tailing waste land, and has strong acid resistance and heavy metal enrichment capacity.
2. The addition of the chicken manure carbon and the magnetite provides a necessary phosphorus source and trace elements for the rush, has a slow release effect, can replace chemical fertilizers, improves the radiation quantity of received long waves, effectively improves the surface temperature and reduces frost damage in high altitude areas.
3. The spray seeding matrix of the rush has good heat capacity, can resist frost disasters, has loose and air permeability, creates a micro-ecological environment, and releases metal ions by the conversion of magnetite, biological carbon and organic matters; driving the crystal phase transformation and accelerating the tailings soil formation process. The environmental adaptability and survival rate of plants are enhanced.
4. The spray-seeding matrix material can avoid labor and transportation cost caused by ex-situ soil replacement, is suitable for ecological restoration of extreme geographical positions and environments, and solves the problem of leaving acid tailings.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to be limiting in any way, and any modifications or alterations based on the teachings of the present invention are intended to fall within the scope of the present invention.
Example 1
Carrying out matrix material spray-seeding in a test area of 5mx10m of an iron tailing pond, wherein the matrix material comprises the following components in percentage by mass: rush seeds 5, chicken manure biochar 20, sawdust 48, magnetite powder 10, plant biomass 180 and iron tailings 240. The chicken manure biochar is prepared by anaerobic pyrolysis of dry chicken manure at 300 ℃, and the phosphate content is 4%; the content of saw dust lignin is 25 percent, and the content of cellulose is 15 percent; the plant biomass is corn straw, and the cellulose content is 35%; the tailings are in-situ tailings of a site to be sprayed, and the pH of the tailings is 2.0; the mesh numbers of the magnetite and the tailings are 120 meshes.
The spraying thickness of the matrix material is 5cm, water is applied to the covering layer, the maximum water holding capacity of the covering layer is controlled to be 35%, water is replenished once per week, and the period is 3. And when the survival rate of the plants in the first growth period after spray-seeding is 88 percent, the ecological environment of the waste acid tailing field is obviously improved, and when the survival rate of the plants is lower than 50 percent after a period of time, the matrix is spray-seeded on the field again according to the spray-seeding method, and the growth cycle is carried out until the acid tailing field is in a soil state.
TABLE 1 spray conditions of example 1
| pH of spray-seeding matrix material | Test point seed germination (%) | First stage survival Rate (%) | pH of acid tailings after first stage culture |
| 2.2 | 92 | 88 | 2.9 |
Example 2
Carrying out matrix material spray-seeding in a test area of 5mx10m of a lead-zinc tailing pond, wherein the matrix material comprises the following components in percentage by mass: 5 parts of rush seeds, 40 parts of chicken manure biochar, 60 parts of sawdust, 10 parts of magnetite powder, 350 parts of plant biomass and 300 parts of lead-zinc tailings. The chicken manure biochar is prepared by anaerobic pyrolysis of dried chicken manure at 400 ℃, and the phosphate content is 12%; the content of saw dust lignin is 40 percent, and the content of cellulose is 30 percent; the plant biomass is corn straw, rice straw and wheat straw, and the cellulose content is 67%; the tailings are in-situ tailings of a site to be sprayed, and the pH of the tailings is 5.5; the mesh numbers of the magnetite and the tailings are both 100 meshes.
The spraying thickness of the matrix material is 4 cm. The coating layer is watered, the maximum water holding capacity is controlled to be 35%, water is replenished once per week, and the period is 3. And when the survival rate of the plants in the first growth period after spray-seeding is 64 percent, the ecological environment of the waste acid tailing field is obviously improved, and when the survival rate of the plants is lower than 50 percent after a period of time, the matrix is spray-seeded on the field again according to the spray-seeding method, and the growth cycle is carried out until the acid tailing field is in a soil state.
TABLE 2 spray conditions of example 2
| pH of spray-seeding matrix material | Test point seed germination (%) | First stage survival Rate (%) | pH of acid tailings after first stage culture |
| 5.7 | 87 | 64 | 6.1 |
Example 3
Carrying out matrix material spray-seeding in a test area of a gold mine tailing pond 5mx10m, wherein the matrix material comprises the following components in percentage by mass: 12 parts of rush seeds, 35 parts of chicken manure biochar, 80 parts of sawdust, 30 parts of magnetite powder, 248 parts of plant biomass and 435 parts of gold mine tailings. The chicken manure biochar is prepared by anaerobic pyrolysis of dried chicken manure at 350 ℃, and the phosphate content is 6%; the content of saw dust lignin is 30 percent, and the content of cellulose is 20 percent; the plant biomass is rice straw, and the cellulose content is 40%; the tailings are in-situ tailings of a site to be sprayed, and the pH of the tailings is 4.6; the mesh number of the magnetite and the tailings is more than 100 meshes.
The spraying thickness of the matrix material is 5 cm. The coating layer is watered, the maximum water holding capacity is controlled to be 35%, water is replenished once per week, and the period is 3. And after the spraying, the survival rate of the plants in the first growth period is 72%, the ecological environment of the waste acid tailing field is obviously improved, and when the survival rate of the plants is lower than 50% after a period of time, the matrix is sprayed on the field according to the spraying method again, and the growth cycle is carried out until the acid tailing field is in a soil state.
Table 3 spray conditions of example 3
| pH of spray-seeding matrix material | Test point seed germination (%) | First stage survival Rate (%) | pH of acid tailings after first stage culture |
| 4.6 | 87 | 72 | 5.2 |
Example 4
Carrying out matrix material spray-seeding in a test area of a copper mine tailing pond with the volume of 5mx10m, wherein the matrix material comprises the following components in percentage by mass: 14 parts of rush grass seeds, 35 parts of chicken manure biochar, 120 parts of sawdust, 34 parts of magnetite powder, 250 parts of plant biomass and 520 parts of copper ore tailings. The chicken manure biochar is prepared by anaerobic pyrolysis of dry chicken manure at 320 ℃, and the phosphate content is 5%; the content of saw dust lignin is 35 percent, and the content of cellulose is 25 percent; the plant biomass is wheat straw, and the cellulose content is 50%; the tailings are in-situ tailings of a site to be sprayed, and the pH of the tailings is 3.0; the mesh number of the magnetite and the tailings is more than 100 meshes.
The spraying thickness of the matrix material is 7 cm. The coating layer is watered, the maximum water holding capacity is controlled to be 35%, water is replenished once per week, and the period is 3. And when the survival rate of the plants in the first growth period after spray-seeding is 55%, the ecological environment of the waste acid tailing field is obviously improved, and when the survival rate of the plants is lower than 50% after a period of time, the matrix is spray-seeded on the field again according to the spray-seeding method, and the growth cycle is carried out until the acid tailing field is in a soil state.
Table 4-example 4 spray conditions
| pH of spray-seeding matrix material | Test point seed germination (%) | First stage survival Rate (%) | pH of acid tailings after first stage culture |
| 3.9 | 72 | 55 | 4.1 |
Example 5
Carrying out matrix material spray-seeding in a test area of 5mx10m of waste agricultural land polluted by acid mine wastewater, wherein the matrix material comprises the following components in percentage by mass: 14 parts of rush seeds, 20 parts of chicken manure biochar, 48 parts of sawdust, 10 parts of magnetite powder, 180 parts of plant biomass and 240 parts of iron tailings. The chicken manure biochar is prepared by anaerobic pyrolysis of dry chicken manure at 360 ℃, and the phosphate content is 10%; the content of saw dust lignin is 30 percent, and the content of cellulose is 25 percent; the plant biomass is corn straw, and the cellulose content is 55%; the tailings are in-situ tailings of a site to be sprayed, and the pH of the tailings is 4.5; the mesh numbers of the magnetite and the tailings are both 200 meshes.
The spraying thickness of the matrix material is 7 cm. The coating layer is watered, the maximum water holding capacity is controlled to be 35%, water is replenished once per week, and the period is 3. And when the survival rate of the plants in the first growth period after spray-seeding is 88 percent, the ecological environment of the waste acid tailing field is obviously improved, and when the survival rate of the plants is lower than 50 percent after a period of time, the matrix is spray-seeded on the field again according to the spray-seeding method, and the growth cycle is carried out until the acid tailing field is in a soil state.
TABLE 5 spray conditions of example 5
| pH of spray-seeding matrix material | Test point seed germination (%) | First stage survival Rate (%) | pH of acid tailings after first stage culture |
| 4.7 | 92 | 91 | 6.3 |
Claims (9)
1. The spraying seeding matrix for the rush is characterized by comprising the following raw materials in parts by weight: 25-80 parts of rush seeds, 100-200 parts of chicken manure biochar, 240-900 parts of sawdust, 50-170 parts of magnetite, 900-1550 parts of plant biomass and 1200-3500 parts of tailings.
2. The rush spray-seeding substrate according to claim 1, wherein the chicken manure biochar is prepared by anaerobic pyrolysis of dried chicken manure at 300-400 ℃, and the phosphate content is 4-12%.
3. The rush spray-seeding matrix according to claim 1, wherein the sawdust contains 25 to 40% lignin and 15 to 30% cellulose.
4. The spray-seeding substrate for rush according to claim 1, wherein the plant biomass is one or more of corn stalks, rice stalks and wheat stalks, and the cellulose content is 35 to 67 percent.
5. The rush planting substrate of claim 1, wherein the tailings are in-situ tailings of a site to be planted, and the pH of the tailings is 2-6.
6. The rush spray-seeding matrix according to claim 1, wherein the mesh number of the magnetite and the tailing is 100 meshes or more.
7. The preparation method of the rush spray-seeding matrix according to any one of claims 1 to 6, characterized in that the method comprises the steps of uniformly mixing the raw materials of the spray-seeding matrix according to the parts by weight, and then adding water to stir to form spray-seeding matrix slurry with the concentration of 50 to 70%.
8. The application of the rush spray-seeding matrix material according to any one of claims 1 to 6, characterized in that the application of the spray-seeding matrix is the application in ecological restoration of acid tailing waste lands with pH of 2 to 6.
9. The use of the rush spray-seeding matrix material according to any one of claim 8, wherein the application method comprises the steps of:
A. uniformly spraying a spray-seeding matrix material with the concentration of 50-70% on the waste land of the acid tailings to be treated, and covering the waste land with the thickness of 4-7 cm;
B. and (3) supplementing water to the spray seeding matrix material covered in the step A, keeping the water amount to be 35% of the maximum water holding amount, and supplementing water 1-2 times every week for 3 weeks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056237.7A CN111264339A (en) | 2020-01-18 | 2020-01-18 | Spray-seeding matrix for rush, spray-seeding method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010056237.7A CN111264339A (en) | 2020-01-18 | 2020-01-18 | Spray-seeding matrix for rush, spray-seeding method and application thereof |
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| CN111264339A true CN111264339A (en) | 2020-06-12 |
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