CN105144898A - Method for improving saline and alkaline land through ardealite, DMTU, EDTA and biological bacteria - Google Patents
Method for improving saline and alkaline land through ardealite, DMTU, EDTA and biological bacteria Download PDFInfo
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- CN105144898A CN105144898A CN201510534504.6A CN201510534504A CN105144898A CN 105144898 A CN105144898 A CN 105144898A CN 201510534504 A CN201510534504 A CN 201510534504A CN 105144898 A CN105144898 A CN 105144898A
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Abstract
The invention provides a method for improving saline and alkaline land through ardealite, DMTU, EDTA and biological bacteria. The method includes the steps that first, the land is treated with ardealite; then, the land is treated with a mixture of DMTU, a curing agent and an improver; then, the land is treated with EDTA; finally, the land is treated with a material obtained after mixed treatment of straw and biological bacteria. By the adoption of the method for improving the saline and alkaline land, saline and alkaline soil can be rapidly improved to be suitable for crop growth; besides, the improver is wide in application range and suitable for soil improvement on soil salinization and alkalinization caused by different reasons in different areas and can improve the soil structure, lower soil alkalinity, increase the soil salt rejection ratio, improve soil fertility, promote crop growth and improve agricultural economy when reasonably applied into soil.
Description
Technical field
The present invention relates to saline land processing technology field, particularly relate to the method that a kind of ardealite+dimethylene triurea+EDTA+ biological bacteria improves saline land.
Background technology
Saline land is the general name of solonchak and alkaline earth and various salinization, alkali-affected soil.Solonchak refers to that in soil, soluble organic fraction content acquires a certain degree, and can produce the great soil group of obviously harm to the g and D of plant.Alkaline earth refers to that quantity reaches the degree that can endanger plant growth and growth containing a large amount of exchangeability ion in soil, and the soil that soil property is changed.In actual state, solonchak and alkaline earth often exist in a mixed way jointly, are referred to as saline land.
Saline land is important land resources, and it is a kind of soil types of extensively distribution on the earth.About nearly 1,000,000,000 hectares of whole world saline soil area, China's Resource of Saline Soil is distributed widely in 17 provinces and regions based on the north, the main integrated distribution region of northwest, northeast, North China and coastal Deng Shi China saline soil, the gross area reaches more than 500,000,000 mus, and account for that the whole nation can utilize land area nearly 5%.The wherein gross area in Coastal beach saline land about 2,350,000 hm
2, and now annual still with 2-3 ten thousand hm
2speed become silted up rise.Saline land control and exploitation are the problems that irrigated area agricultural development can not be ignored, and for promotion agricultural sustainable development, Ensuring Food Safety has important function.
The Method and Technology in domestic process saline land is summed up roughly as follows: (1) is physically improved; Level land, deep plough sun the earth which has been ploughed up, loosen the soil in time, raise landform, microcell is improved the soil.(2) water conservancy improvement.Fill with deploying cover, storage fresh water on saline-alkali land for leaching, washing salinity by irrigation, underground salt discharge.(3) chemical modifying; The chemical agents such as ardealite, superphosphate, fulvic acid are used to improve.(4) biological modification; Rice cultivation, plantation salt-tolerant plant Tian Qing etc., use microbial-bacterial fertilizer etc.At present, the soil conditioner of soil salinization chemical harnessing is more, as gypsum, calcium sulphate, superphosphate, trade waste ardealite, industrial waste acid, fertilizer, detritus acid, flyash, peat, fermentation acid-sludge etc., these all achieve certain effect to improvement saline land, relatively more conventional is fertilizer, gypsum, and wherein gypsum is with Ca
2+displacement Na
+and improved saline land by sour neutralization bases; But be subject to as complex manufacturing, cost restriction that is high and some other condition can not obtain large-area popularization.
Summary of the invention
For solving the problems of the technologies described above, the invention provides the method that a kind of ardealite+dimethylene triurea+EDTA+ biological bacteria improves saline land.
The present invention is achieved by the following technical programs.
A kind of ardealite provided by the invention+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, comprises the following steps:
(1) ardealite is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 10 ~ 20 days;
(2) then the mixture of dimethylene triurea, curing agent, modifying agent is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, the mixture of dimethylene triurea, curing agent, modifying agent is mixed with soil layer, keeps 5 ~ 10 days;
(3) EDTA is sprinkling upon equably at saline and alkaline the earth's surface, and the 20cm that deep ploughs, EDTA is mixed with soil layer, keeps 5 ~ 10 days;
(4) by stalk and biological bacteria mixed processing, the material A obtained is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, make material mix with soil layer all with, and keep 20 ~ 30 days;
In above-mentioned, the consumption of ardealite is 200 ~ 1200kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 40 ~ 150kg/ mu, and the consumption of EDTA is 5 ~ 50kg/ mu; Material A consumption is 50 ~ 400kg/ mu.
Further, the mixed proportion of described dimethylene triurea, curing agent, modifying agent is: 20:(0.5 ~ 2): (0.5 ~ 2);
Further, above-mentioned material is deposited separately before use, mixes in use.
Further, described curing agent is the mixture of the zinc sulphate of equal proportion, trimethyl phosphate, diethy-aceto oxalate,
Further, described modifier is the polyethylene glycol of equal proportion, the mixture of CMC.
Further, described step (2) is after the mixture adding dimethylene triurea, curing agent, modifying agent, and spray clear water, the saline land making 20cm dark is moistening.
Further, the making step of described material A is: shattered by stalk, then adds animal wastes and biological bacteria, sealed fermenting 20 ~ 30 days;
In above-mentioned, mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:(10 ~ 20): (1 ~ 3).
Further, described biological bacteria comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria, and the viable count of often kind of biological bacteria in biological bacteria is content is 1 × 10
3 ~ 4more than cfu/g.
Further, the consumption of various material of the present invention is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 200 ~ 600kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 40 ~ 80kg/ mu, and the consumption of EDTA is 5 ~ 20kg/ mu; Material A 50 ~ 150kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600 ~ 900kg/ mu; Mixture 80 ~ 120kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 20 ~ 35kg/ mu; Material A 150 ~ 300kg/ mu;
In heavy salinized ground, the consumption of ardealite is 900 ~ 1200kg/ mu; Mixture 120 ~ 150kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 35 ~ 50kg/ mu; Material A 300 ~ 400kg/ mu.
Beneficial effect of the present invention is:
1), in this method, ardealite is aobvious acid, and it can neutralize with the saline land of aobvious alkalescence, effectively can reduce the pH value in saline land;
2) contained in ardealite calcium ion can with carbonate in saline land and bicarbonate radical generation chemical reaction, generate calcium carbonate and calcium bicarbonate, wherein calcium carbonate is water insoluble, calcium bicarbonate is slightly soluble in water, the character of calcium carbonate and calcium bicarbonate can impel Zinc fractions granular structure, and its granular structure can wrapping portion sodium ion, promotes desalinization of soil by flooding or leaching speed, reduce the bulk density of soil simultaneously, increase soil water permeability;
3) dimethylene triurea is line-like structures, it has binding agent effect, the granular structure formed is reacted in ardealite and saline land, after interpolation dimethylene triurea, dimethylene triurea can promote the formation of granular structure, and dimethylene triurea can fill up the vacancy position in the granular structure of calcium carbonate and calcium bicarbonate formation simultaneously, makes granular structure inside and outside portion relative insulation, reduce the sodium ion of mobility in soil, promote desalinization of soil by flooding or leaching speed;
4) dimethylene triurea can slowly decompose at temperature and microbial action, and during decomposition, can form organic salt with the cation such as the sodium in soil, calcium, the solvability of its organic salt is low, reduces the cation such as sodium, calcium of soil free state;
5) dimethylene triurea itself is slow-release fertilizer, and the product after its decomposition can provide nitrogen element for plant, can not cause the secondary pollution of soil;
6) when using dimethylene triurea, add curing agent and modifier raw material, dimethylene triurea can be impelled to bond fast, and curing agent, modifier and dimethylene triurea are used in combination, and granular structure can be impelled to be formed fast;
7) EDTA can react with the sodium in soil, calcium, iron ion complex compounds such as forming EDTA-Na, EDTA-Ca, EDTA-Fe, the solvability of EDTA-Na is lower than other sodium salts, and the complex compound that after EDTA-Ca, EDTA-Fe and iron, element is formed is slightly soluble in water, adds EDTA and can reduce salt content in soil;
8) stalk can increase the water penetration of soil, gas permeability and moisture retention, increases the content of organic matter of soil, and increase bacterial content in soil, bacterial population increase can reduce the part saliferous in saline land;
9) biological bacteria comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria; Itself and stalk are used in combination, can grow fast, and absorb the part salinity in saline land in soil, reduce the salt content in saline land;
10) adopt biological bacteria and stalk to be pre-mixed fermentation, make biological bacteria amount reproduction, reduce the time in the saline land of biological bacteria process;
11) in the present invention, ardealite is first adopted to process saline land, reduce pH value, simultaneously by generating calcium carbonate, the granular structure such as calcium bicarbonate, and then add the materials such as dimethylene triurea, the granular structure being is formed more fast, and fill up the position, space of granular structure, the inner relative insulation of the granular structure being, reduce the sodium ions content of the mobility in soil, the salt content in soil is reduced with this, add EDTA again, can with the sodium of granular structure outside, calcium, iron plasma reaction forms complex compound, reduce the salt content in the soil of granular structure outside, the last material adding stalk and biological bacteria mixed processing again, avoid relative strong basicity suddenly to the suppression of biological bacteria, biological bacteria is attached to stalk surface, fast processing is carried out to soil, absorb salinity, the object lowering soil salt is reached with this.
Adopt above-mentioned saline and alkali land improvement method, can quick improvement saline-alkali soil, suitable for crop grows, and this modifying agent operation strategies is wider, be applicable to different regions, salinization of soil soil melioration that different reason causes, rationally be manured into soil, can soil structure be improved, reduce soil alkalinity, improve soil salt discharge rate, increase soil fertility, promote the growth of crops, improve agricultural economy.
Embodiment
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
Embodiment one
1, raw material prepares
Ardealite;
Dimethylene triurea, its structural formula is:
Curing agent is the mixture of the zinc sulphate of equal proportion, trimethyl phosphate, diethy-aceto oxalate;
Modifier is the polyethylene glycol of equal proportion, the mixture of CMC;
EDTA；
Stalk;
Animal wastes, optional pig manure, cow dung, sheep excrement, chicken manure etc., the present embodiment selects pig manure;
Biological bacteria, comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria, and the viable count of often kind of biological bacteria in biological bacteria is content is 1 × 10
3 ~ 4more than cfu/g.
2, improve the method in saline land by ardealite+dimethylene triurea+EDTA+ biological bacteria, comprise the following steps:
(1) making of material A, first shatters stalk, then adds animal wastes and biological bacteria, sealed fermenting 20 days; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:20:1.
(2) ardealite is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 10 days;
(3) then dimethylene triurea, curing agent, modifying agent are mixed in 20:0.5:0.5 ratio, then saline and alkaline the earth's surface is sprinkling upon equably, and deep plough 20cm, the mixture of dimethylene triurea, curing agent, modifying agent is mixed with soil layer, spray clear water, the saline land making 20cm dark is moistening, keeps 5 days;
(4) EDTA is sprinkling upon equably at saline and alkaline the earth's surface, and the 20cm that deep ploughs, EDTA is mixed with soil layer, keeps 5 days;
(5) material A is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, make material mix with soil layer all with, and keep 20 days;
In the present embodiment, the consumption of various material is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 200kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 40kg/ mu, and the consumption of EDTA is 5kg/ mu; Material A 50kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600kg/ mu; The mixture 80kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 20kg/ mu; Material A 150kg/ mu;
In heavy salinized ground, the consumption of ardealite is 900kg/ mu; The mixture 120kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 35kg/ mu; Material A 300kg/ mu.
Embodiment two
1, raw material prepares
Ardealite;
Dimethylene triurea, its structural formula is:
Curing agent is the mixture of the zinc sulphate of equal proportion, trimethyl phosphate, diethy-aceto oxalate;
Modifier is the polyethylene glycol of equal proportion, the mixture of CMC;
EDTA；
Stalk;
Animal wastes, optional pig manure, cow dung, sheep excrement, chicken manure etc., the present embodiment selects pig manure;
Biological bacteria, comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria, and the viable count of often kind of biological bacteria in biological bacteria is content is 1 × 10
3 ~ 4more than cfu/g.
2, improve the method in saline land by ardealite+dimethylene triurea+EDTA+ biological bacteria, comprise the following steps:
(1) making of material A, first shatters stalk, then adds animal wastes and biological bacteria, sealed fermenting 30 days; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:20:3.
(2) ardealite is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 20 days;
(3) then dimethylene triurea, curing agent, modifying agent are mixed in 20:2:2 ratio, then saline and alkaline the earth's surface is sprinkling upon equably, and deep plough 20cm, the mixture of dimethylene triurea, curing agent, modifying agent is mixed with soil layer, spray clear water, the saline land making 20cm dark is moistening, keeps 10 days;
(4) EDTA is sprinkling upon equably at saline and alkaline the earth's surface, and the 20cm that deep ploughs, EDTA is mixed with soil layer, keeps 10 days;
(5) material A is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, make material mix with soil layer all with, and keep 30 days;
In the present embodiment, the consumption of various material is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 600kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 80kg/ mu, and the consumption of EDTA is 20kg/ mu; Material A 150kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 900kg/ mu; The mixture 120kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 35kg/ mu; Material A 300kg/ mu;
In heavy salinized ground, the consumption of ardealite is 1200kg/ mu; The mixture 150kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 350kg/ mu; Material A 400kg/ mu.
Embodiment three
1, raw material prepares
Ardealite;
Dimethylene triurea, its structural formula is:
Curing agent is the mixture of the zinc sulphate of equal proportion, trimethyl phosphate, diethy-aceto oxalate;
Modifier is the polyethylene glycol of equal proportion, the mixture of CMC;
EDTA；
Stalk;
Animal wastes, optional pig manure, cow dung, sheep excrement, chicken manure etc., the present embodiment selects pig manure;
Biological bacteria, comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria, and the viable count of often kind of biological bacteria in biological bacteria is content is 1 × 10
3 ~ 4more than cfu/g.
2, improve the method in saline land by ardealite+dimethylene triurea+EDTA+ biological bacteria, comprise the following steps:
(1) material A, first shatters stalk, then adds animal wastes and biological bacteria, sealed fermenting 25 days; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:15:2.
(2) ardealite is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 15 days;
(3) then by dimethylene triurea, curing agent, modifying agent in 20:1:1) ratio mixing, then saline and alkaline the earth's surface is sprinkling upon equably, and deep plough 20cm, the mixture of dimethylene triurea, curing agent, modifying agent is mixed with soil layer, spray clear water, the saline land making 20cm dark is moistening, keeps 8 days;
(4) EDTA is sprinkling upon equably at saline and alkaline the earth's surface, and the 20cm that deep ploughs, EDTA is mixed with soil layer, keeps 8 days;
(5) material A is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, make material mix with soil layer all with, and keep 25 days;
In the present embodiment, the consumption of various material is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 400kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 60kg/ mu, and the consumption of EDTA is 15kg/ mu; Material A 100kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 700kg/ mu; The mixture 100kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 228kg/ mu; Material A 220kg/ mu;
In heavy salinized ground, the consumption of ardealite is 1100kg/ mu; The mixture 130kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 42kg/ mu; Material A 350kg/ mu.
The above, it is only better example of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above example according to technical spirit of the present invention, coversion material equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Meanwhile, in order to be further elaborated beneficial effect of the present invention, present inventor has performed a large amount of property used test, special instruction, the present invention's test is intended to the beneficial effect that the technology of the present invention is described, is never only limitted to scope of the present invention.
Test method: select the saline land of Haixing County, Cangzhou, Hebei Province to test, experimental group: use above-described embodiment one ~ embodiment three to process the saline land of different salinity, and throw in N
2o8kg/ mu, P
2o
55kg/ mu, K
2the fertilizer of O3kg/ mu, carries out plantation wheat; Control group: independent ardealite process is carried out to the saline land of different salt content, total consumption of the material of the saline and alkali land improvement method of the corresponding embodiment one ~ embodiment three of consumption difference of ardealite, and throw in N
2o8kg/ mu, P
2o
55kg/ mu, K
2the fertilizer of O3kg/ mu, carries out plantation wheat.By statistics output, in slight alkaline land, use the saline land wheat yield of the modifying agent process of the present embodiment than using the high by 30 ~ 40% of ardealite process; In moderate saline-alkali soil, use the saline land wheat yield of the modifying agent process of the present embodiment than using the high by 35 ~ 50% of ardealite process; In heavy salinized ground, use the saline land wheat yield of the modifying agent process of the present embodiment than using the high by 45 ~ 80% of ardealite process.
Claims (8)
1. improve the method in saline land by ardealite+dimethylene triurea+EDTA+ biological bacteria, it is characterized in that: comprise the following steps:
(1) ardealite is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 10 ~ 20 days;
(2) then the mixture of dimethylene triurea, curing agent, modifying agent is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, the mixture of dimethylene triurea, curing agent, modifying agent is mixed with soil layer, keeps 5 ~ 10 days;
(3) EDTA is sprinkling upon equably at saline and alkaline the earth's surface, and the 20cm that deep ploughs, EDTA is mixed with soil layer, keeps 5 ~ 10 days;
(4) by stalk and biological bacteria mixed processing, the material A obtained is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, make material mix with soil layer all with, and keep 20 ~ 30 days;
In above-mentioned, the consumption of ardealite is 200 ~ 1200kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 40 ~ 150kg/ mu, and the consumption of EDTA is 5 ~ 50kg/ mu; Material A consumption is 50 ~ 400kg/ mu.
2. ardealite as claimed in claim 1+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: the mixed proportion of described dimethylene triurea, curing agent, modifying agent is: 20:(0.5 ~ 2): (0.5 ~ 2);
Further, above-mentioned material is deposited separately before use, mixes in use.
3. ardealite as claimed in claim 1 or 2+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: described curing agent is the mixture of the zinc sulphate of equal proportion, trimethyl phosphate, diethy-aceto oxalate.
4. ardealite as claimed in claim 1 or 2+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: described modifier is the polyethylene glycol of equal proportion, the mixture of CMC.
5. ardealite as claimed in claim 1+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: described step (2) is after the mixture adding dimethylene triurea, curing agent, modifying agent, spray clear water, the saline land making 20cm dark is moistening.
6. ardealite as claimed in claim 1+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: the making step of described material A is: shattered by stalk, then animal wastes and biological bacteria is added, sealed fermenting 20 ~ 30 days;
In above-mentioned, mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:(10 ~ 20): (1 ~ 3).
7. the method improving saline land by ardealite+dimethylene triurea+EDTA+ biological bacteria as described in claim 1 or 6, it is characterized in that: described biological bacteria comprises bacillus subtilis, salt tolerant Azospirillum brasilense, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, alkaliphile, cellulose decomposition bacteria, the viable count of often kind of biological bacteria in biological bacteria is content is 1 × 10
3 ~ 4more than cfu/g.
8. ardealite as claimed in claim 1+dimethylene triurea+EDTA+ biological bacteria improves the method in saline land, it is characterized in that: the consumption of various material of the present invention is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 200 ~ 600kg/ mu; The amount of mixture of dimethylene triurea, curing agent, modifying agent is 40 ~ 80kg/ mu, and the consumption of EDTA is 5 ~ 20kg/ mu; Material A 50 ~ 150kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600 ~ 900kg/ mu; Mixture 80 ~ 120kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 20 ~ 35kg/ mu; Material A 150 ~ 300kg/ mu;
In heavy salinized ground, the consumption of ardealite is 900 ~ 1200kg/ mu; Mixture 120 ~ 150kg/ mu of dimethylene triurea, curing agent, modifying agent, the consumption of EDTA is 35 ~ 50kg/ mu; Material A 300 ~ 400kg/ mu.
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| CN109652462A (en) * | 2018-04-09 | 2019-04-19 | 西南科技大学 | A kind of utilization method of organic matter in ardealite |
| CN109652462B (en) * | 2018-04-09 | 2022-02-11 | 西南科技大学 | Method for utilizing organic matters in phosphogypsum |
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