CN105144899A - Method for improving saline and alkaline land through ardealite, dimethylolurea and biological bacteria - Google Patents
Method for improving saline and alkaline land through ardealite, dimethylolurea and biological bacteria Download PDFInfo
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- CN105144899A CN105144899A CN201510534598.7A CN201510534598A CN105144899A CN 105144899 A CN105144899 A CN 105144899A CN 201510534598 A CN201510534598 A CN 201510534598A CN 105144899 A CN105144899 A CN 105144899A
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Abstract
The invention provides a method for improving saline and alkaline land through ardealite, dimethylolurea and biological bacteria. The method includes the steps of treating the land with ardealite, treating the land with dimethylolurea, and treating the land 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, an 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 the two methylolurea+biological bacteria of a kind of ardealite+1'3-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; Ardealite, superphosphate, humus, peat, fermentation acid-sludge etc.(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 the two methylolurea+biological bacteria of a kind of ardealite+1'3-improves saline land.
The present invention is achieved by the following technical programs.
Two methylolurea+the biological bacteria of a kind of ardealite+1'3-provided by the invention 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 two for 1'3-methylolurea, curing agent is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, makes the two methylolurea of 1'3-, the mixture of curing agent mixes with soil layer, keep 5 ~ 10 days;
(3) 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 ~ 1400kg/ mu; The amount of mixture of the two methylolurea of 1'3-, curing agent is 5 ~ 100kg/ mu, and material A consumption is 50 ~ 400kg/ mu.
Further, the mixed proportion of the two methylolurea of described 1'3-, curing agent is: (10 ~ 50): 1;
Further, the material in above-mentioned is deposited separately before use, mixes in use.
Further, described curing agent is at least one in zinc sulphate, trimethyl phosphate, diethy-aceto oxalate, oxalic acid, phthalic acid.
Further, described step (2) is after the mixture adding the two methylolurea of 1'3-, curing agent, and spray clear water, the saline land making 20cm dark is moistening.
Further, the step of described stalk and biological bacteria mixed processing 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=100:15:1;
In above-mentioned, the viable count in described biological bacteria is content is 1 × 10
6more than cfu/g.
Further, described biological bacteria comprises bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, alkaliphile, cellulose decomposition bacteria.
Further, the consumption of various material of the present invention is determined according to different saline lands, is specially:
In slight alkaline land, ardealite 200 ~ 600kg/ mu, mixture 5 ~ 50kg/ mu of the two methylolurea of 1'3-, curing agent, material A 50 ~ 150kg/ mu;
In moderate saline-alkali soil, ardealite 600 ~ 1000kg/ mu; Mixture 50 ~ 80kg/ mu of the two methylolurea of 1'3-, curing agent, material A 150 ~ 300kg/ mu;
In heavy salinized ground, ardealite 1000 ~ 1400kg/ mu; Mixture 80 ~ 100kg/ mu of the two methylolurea of 1'3-, curing agent, 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) the two methylolurea of 1'3-is line-like structures, it has binding agent effect, the granular structure formed is reacted in ardealite and saline land, after the two methylolurea of interpolation 1'3-, the two methylolurea of 1'3-can promote the formation of granular structure, and the two methylolurea of 1'3-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) the two methylolurea of 1'3-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, the cation such as sodium, calcium of reduction soil free state;
5) the two methylolurea of 1'3-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 1'3-pair of methylolurea, adding curing agent, the two methylolurea rapid curing of 1'3-can be impelled, granular structure can be impelled to be formed fast.
7) 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;
8) biological bacteria comprises bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, 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;
9) 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;
10) 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 the two methylolureas of 1'3-, 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, 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.
The present invention adopts 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
Two methylolurea+the biological bacteria of a kind of ardealite+1'3-provided by the invention improves the method in saline land, specific as follows:
1, raw material prepare
Ardealite
The two methylolurea of 1'3-, deposits separately,
Curing agent is at least one in zinc sulphate, trimethyl phosphate, diethy-aceto oxalate, oxalic acid, phthalic acid, and the present embodiment selects diethy-aceto oxalate.
Stalk
Biological bacteria, comprise bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, alkaliphile, cellulose decomposition bacteria, the viable count wherein in biological bacteria is content is 1 × 10
6more than cfu/g;
Material A: stalk is shattered, then add animal wastes and biological bacteria, sealed fermenting 20 days, obtains the material of stalk and biological bacteria mixed processing; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:15:1.
2, the method in saline land is improved by the two methylolurea+biological bacteria of ardealite+1'3-
Specifically 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 days;
(2) then the mixture of two for 1'3-methylolurea, curing agent is sprinkling upon saline and alkaline the earth's surface equably, and deep plough 20cm, make the two methylolurea of 1'3-, the mixture of curing agent mixes with soil layer, sprinkling clear water, the saline land making 20cm dark is moistening, keeps 5 ~ 10 days; The mixed proportion of the two methylolurea of 1'3-, curing agent is: 10:1;
(3) 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 days;
The consumption of the various materials of the present embodiment is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 200kg/ mu, the mixture 5kg/ mu of the two methylolurea of 1'3-, curing agent, material A 50kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600kg/ mu; The mixture 50kg/ mu of the two methylolurea of 1'3-, curing agent, material A 150kg/ mu;
In heavy salinized ground, the consumption of ardealite is 1000kg/ mu; The mixture 80kg/ mu of the two methylolurea of 1'3-, curing agent, material A 300kg/ mu.
Embodiment two
Two methylolurea+the biological bacteria of a kind of ardealite+1'3-provided by the invention improves the method in saline land, specific as follows:
1, raw material prepare
Ardealite
The two methylolurea of 1'3-, deposits separately,
Curing agent is at least one in zinc sulphate, trimethyl phosphate, diethy-aceto oxalate, oxalic acid, phthalic acid, and the present embodiment selects trimethyl phosphate;
Stalk
Biological bacteria, comprise bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, alkaliphile, cellulose decomposition bacteria, the viable count wherein in biological bacteria is content is 1 × 10
6more than cfu/g;
Material A: stalk is shattered, then add animal wastes and biological bacteria, sealed fermenting 30 days, obtains the material of stalk and biological bacteria mixed processing; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:15:1.
2, the method in saline land is improved by the two methylolurea+biological bacteria of ardealite+1'3-
Specifically 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 20 days;
(2) then the mixture of two for 1'3-methylolurea, curing agent is sprinkling upon saline and alkaline the earth's surface equably, and deep plough 20cm, make the two methylolurea of 1'3-, the mixture of curing agent mixes with soil layer, sprinkling clear water, the saline land making 20cm dark is moistening, keeps 10 days; The mixed proportion of the two methylolurea of 1'3-, curing agent is: 50:1;
(3) 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 30 days;
The consumption of the various materials of the present embodiment is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 600kg/ mu, the mixture 50kg/ mu of the two methylolurea of 1'3-, phosphorus curing agent, material A 150kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 1000kg/ mu; The mixture 80kg/ mu of the two methylolurea of 1'3-, curing agent, material A 300kg/ mu;
In heavy salinized ground, the consumption of ardealite is 1400kg/ mu; The mixture 100kg/ mu of the two methylolurea of 1'3-, curing agent, material A 400kg/ mu.
Embodiment three
Two methylolurea+the biological bacteria of a kind of ardealite+1'3-provided by the invention improves the method in saline land, specific as follows:
1, raw material prepare
Ardealite
The two methylolurea of 1'3-, deposits separately,
Curing agent is at least one in zinc sulphate, trimethyl phosphate, diethy-aceto oxalate, oxalic acid, phthalic acid, and the present embodiment selects oxalic acid;
Stalk;
Biological bacteria, comprise bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, alkaliphile, cellulose decomposition bacteria, the viable count wherein in biological bacteria is content is 1 × 10
6more than cfu/g;
Material A: stalk is shattered, then add animal wastes and biological bacteria, sealed fermenting 25 days, obtains the material of stalk and biological bacteria mixed processing; Mixed proportion is that stalk shatters: animal wastes: biological bacteria=100:15:1.
2, the method in saline land is improved by the two methylolurea+biological bacteria of ardealite+1'3-
Specifically 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 15 days;
(2) then the mixture of two for 1'3-methylolurea, curing agent is sprinkling upon saline and alkaline the earth's surface equably, and deep plough 20cm, make the two methylolurea of 1'3-, the mixture of curing agent mixes with soil layer, sprinkling clear water, the saline land making 20cm dark is moistening, keeps 8 days; The mixed proportion of the two methylolurea of 1'3-, curing agent is: 20:1;
(3) 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 25 days;
The consumption of the various materials of the present embodiment is determined according to different saline lands, is specially:
In slight alkaline land, the consumption of ardealite is 400kg/ mu, the mixture 30kg/ mu of the two methylolurea of 1'3-, curing agent, material A 90kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 800kg/ mu; The mixture 60kg/ mu of the two methylolurea of 1'3-, curing agent, material A 220kg/ mu;
In heavy salinized ground, the consumption of ardealite is 1200kg/ mu; The mixture 90kg/ mu of the two methylolurea of 1'3-, curing agent, 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, respectively as the experimental field of experimental group 1-12, and applies different composite modifying agents respectively, is specially:
Experimental group 1 ~ 4 is slight alkaline land, wherein:
Experimental group 1 is 0 process;
Experimental group 2 ardealite process, consumption is 400kg/ mu;
Experimental group 3 ardealite and Urea treatment, the consumption of ardealite is 400kg/ mu, and the consumption of urea is 40kg/ mu;
This improvement saline land method process of experimental group 4, wherein the consumption of ardealite is 400kg/ mu, the mixture 40kg/ mu of the two methylolurea of 1'3-, curing agent, the material 90kg/ mu of stalk and biological bacteria mixed processing;
Experimental group 5 ~ 8 is moderate saline-alkali soil, wherein:
Experimental group 5 is 0 process;
Experimental group 6 ardealite process, consumption is 800kg/ mu;
Experimental group 7 ardealite and Urea treatment, the consumption of ardealite is 800kg/ mu, and the consumption of urea is 60kg/ mu;
This improvement saline land method process of experimental group 8, wherein the consumption of ardealite is 800kg/ mu; The mixture 60kg/ mu of the two methylolurea of 1'3-, curing agent, the material 220kg/ mu of stalk and biological bacteria mixed processing;
Experimental group 9 ~ 12 is severe saline land, wherein:
Experimental group 9 is 0 process;
Experimental group 10 ardealite process, consumption is 1200kg/ mu;
Experimental group 11 ardealite and Urea treatment, the consumption of ardealite is 1200kg/ mu, and the consumption of urea is 90kg/ mu;
This improvement saline land method process of experimental group 12, wherein the consumption of ardealite is 1200kg/ mu; The mixture 90kg/ mu of the two methylolurea of 1'3-, curing agent, the material 350kg/ mu of stalk and biological bacteria mixed processing;
Then N is dropped into above-mentioned 12 experimental group
2o6kg/ mu, P
2o
55kg/ mu, K
2the fertilizer of O3kg/ mu, carries out plantation wheat;
To above-mentioned 1 ~ No. 12 experimental field carry out the total stem number of statistics wheat during jointing stage and harvest time output, its result is as following table 1 ~ 3:
Table 1: in slight alkaline land the total stem number of wheat during jointing stage and harvest time output
Table 2: in moderate saline-alkali soil the total stem number of wheat during jointing stage and harvest time output
Table 3: in heavy salinized ground the total stem number of wheat during jointing stage and harvest time output
Above-mentioned result of the test shows, use saline and alkali land improvement method of the present invention can significantly improve the total stem number of wheat during jointing stage and the output of harvest time, and the method in this improvement saline land improves the better effects if in saline land than being used alone ardealite improvement saline land and ardealite and urea mixing, meanwhile, the improved effect of method to slight, moderate, heavy salinized ground in this improvement saline land is good.
Claims (8)
1. improve the method in saline land by the two methylolurea+biological bacteria of ardealite+1'3-, 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 two for 1'3-methylolurea, curing agent is sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, makes the two methylolurea of 1'3-, the mixture of curing agent mixes with soil layer, keep 5 ~ 10 days;
(3) 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.
2. the two methylolurea+biological bacteria of ardealite+1'3-as claimed in claim 1 improves the method in saline land, it is characterized in that: the consumption of described ardealite is 200 ~ 1400kg/ mu; The amount of mixture of the two methylolurea of 1'3-and curing agent is 5 ~ 100kg/ mu, and material A consumption is 50 ~ 400kg/ mu.
3. the two methylolurea+biological bacteria of ardealite+1'3-as claimed in claim 1 improves the method in saline land, it is characterized in that: the mixed proportion of the two methylolurea of described 1'3-, curing agent is: (10 ~ 50): 1;
Further, the material in above-mentioned is deposited separately before use, mixes in use.
4. the method improving saline land by the two methylolurea+biological bacteria of ardealite+1'3-as described in claim 1 or 3, is characterized in that: described curing agent is at least one in zinc sulphate, trimethyl phosphate, diethy-aceto oxalate, oxalic acid, phthalic acid.
5. the two methylolurea+biological bacteria of ardealite+1'3-as claimed in claim 1 improves the method in saline land, it is characterized in that: described step (2) is after the mixture adding the two methylolurea of 1'3-, curing agent, spray clear water, the saline land making 20cm dark is moistening.
6. the two methylolurea+biological bacteria of ardealite+1'3-as claimed in claim 1 improves the method in saline land, it is characterized in that: the step of described stalk and biological bacteria mixed processing 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=100:15:1;
In above-mentioned, the viable count in described biological bacteria is content is 1 × 10
6more than cfu/g.
7. the method improving saline land by the two methylolurea+biological bacteria of ardealite+1'3-as described in claim 1 or 5, is characterized in that: described biological bacteria comprises bacillus subtilis, Azotica, salt tolerant rhizobium, salt tolerant Azospirillum brasilense, salt tolerant fixed nitrogen Klebsiella, Salt And Alkali Tolerance phosphate solubilizing bacteria, S. cervisiae, trichoderma reesei, nitrifying bacteria, alkaliphile, cellulose decomposition bacteria.
8. the two methylolurea+biological bacteria of ardealite+1'3-as claimed in claim 1 or 2 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, ardealite 200 ~ 600kg/ mu, mixture 5 ~ 50kg/ mu of the two methylolurea of 1'3-, curing agent, material A 50 ~ 150kg/ mu;
In moderate saline-alkali soil, ardealite 600 ~ 1000kg/ mu; Mixture 50 ~ 80kg/ mu of the two methylolurea of 1'3-, curing agent, material A 150 ~ 300kg/ mu;
In heavy salinized ground, ardealite 1000 ~ 1400kg/ mu; Mixture 80 ~ 100kg/ mu of the two methylolurea of 1'3-, curing agent, material A 300 ~ 400kg/ mu.
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