CN105103694A - Method for improving saline-alkali soil through ardealite, N'N-(methylenedi-4,1-phenylene)bis[N'-phenyl-Urea] and EDTA - Google Patents
Method for improving saline-alkali soil through ardealite, N'N-(methylenedi-4,1-phenylene)bis[N'-phenyl-Urea] and EDTA Download PDFInfo
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- CN105103694A CN105103694A CN201510535395.XA CN201510535395A CN105103694A CN 105103694 A CN105103694 A CN 105103694A CN 201510535395 A CN201510535395 A CN 201510535395A CN 105103694 A CN105103694 A CN 105103694A
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Abstract
The invention provides a method for improving saline-alkali soil through ardealite, N'N-(methylenedi-4,1-phenylene)bis[N'-phenyl-Urea] and EDTA. The method includes the steps of firstly, processing the saline-alkali soil through ardealite and fulvic acid; secondly, processing the saline-alkali soil through N'N-(methylenedi-4,1-phenylene)bis[N'-phenyl-Urea], diethyl oxalate and hydroxymethyl cellulose; thirdly, processing the saline-alkali soil through EDTA. By means of the method, the saline-alkali soil can be rapidly improved to be suitable for growth of crops, the application range of a modifying agent is wide, and the modifying agent is suitable for improving saline-alkali soil generated due to different reasons in different regions; after the modifying agent is reasonably applied into the soil, the structure of the soil can be improved, the soil alkalinity can be lowered, the salt elimination rate of the soil can be improved, the fertility of the soil can be increased, growth of crops can be promoted, and agricultural economy can be improved.
Description
Technical field
The present invention relates to saline land processing technology field, particularly relate to the method that a kind of ardealite+MDU+EDTA 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 micro-EDTA fertile.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 the restriction be subject to as complex manufacturing, complex treatment process 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+MDU+EDTA improves saline land.
The present invention is achieved by the following technical programs.
A kind of ardealite provided by the invention+MDU+EDTA improves the method in saline land, comprises the following steps:
(1) ardealite and fulvic acid ammonium are sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 5 ~ 30 days;
(2) mixture of MDU, diethy-aceto oxalate, CMC is sprinkling upon saline and alkaline the earth's surface, and the 20cm that deep ploughs, make to mix, and keep 5 ~ 20 days;
(3) EDTA 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 consumption of fulvic acid ammonium is 30 ~ 300kg/ mu; The amount of mixture of MDU, diethy-aceto oxalate, CMC is 20 ~ 80kg/ mu, and the consumption of EDTA is 2 ~ 50kg/ mu.
Further, the mixed ratio of described MDU, diethy-aceto oxalate, CMC is: 50:(1 ~ 5): (1 ~ 5);
Material in above-mentioned, separately deposits before use, mixes in use.
Further, described step (2) is after the mixture adding MDU, diethy-aceto oxalate, CMC, and spray clear water, the saline land making 20cm dark is moistening.
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, and the consumption of fulvic acid ammonium is 30 ~ 100kg/ mu, mixture 20 ~ 40kg/ mu of MDU, diethy-aceto oxalate, CMC, and the consumption of EDTA is 2 ~ 20kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600 ~ 900kg/ mu; The consumption of fulvic acid ammonium is 100 ~ 200kg/ mu; Mixture 40 ~ 60kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 20 ~ 35kg/ mu.
In heavy salinized ground, the consumption of ardealite is 900 ~ 1200kg/ mu; The consumption of fulvic acid ammonium is 60 ~ 80kg/ mu; Mixture 300 ~ 400kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 35 ~ 50kg/ 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) in fulvic acid ammonium, ammonium root can react with the carbonate in saline land and bicarbonate radical, generates gas, reduces the carbonate in saline land and bicarbonate radical,
4) MDU is line-like structures, it has binding agent effect, the granular structure formed is reacted in ardealite and saline land, after interpolation MDU, MDU can promote the formation of granular structure, and MDU 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;
5) MDU 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;
6) MDU 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;
7) when using MDU, adding diethy-aceto oxalate, CMC raw material, MDU rapid curing can be impelled, granular structure can be impelled to be formed fast.
8) 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, add EDTA and can reduce salt content in soil
9) in the present invention, ardealite and fulvic acid ammonium 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 MDU, 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, finally 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 object improving saline land 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
1, raw material prepares
Ardealite,
Fulvic acid,
MDU, its structural formula is:
Diethy-aceto oxalate,
CMC,
EDTA，
2, ardealite+MDU+EDTA improves the method in saline land, comprises the following steps:
(1) ardealite and fulvic acid ammonium are sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 5 ~ 30 days;
(2) MDU, diethy-aceto oxalate, CMC are mixed in the ratio of 50:1:1, be then evenly sprinkling upon saline and alkaline the earth's surface, and the 20cm that deep ploughs, make to mix, spray clear water, the saline land making 20cm dark is moistening, and keeps 5 days;
(3) EDTA 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, and the consumption of fulvic acid ammonium is 30kg/ mu, the mixture 20kg/ mu of MDU, diethy-aceto oxalate, CMC, and the consumption of EDTA is 2kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600kg/ mu; The consumption of fulvic acid ammonium is 40kg/ mu; The mixture 150kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 20kg/ mu.
In heavy salinized ground, the consumption of ardealite is 900kg/ mu; The consumption of fulvic acid ammonium is 200kg/ mu; The mixture 60kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 35kg/ mu.
Embodiment two
1, raw material prepares
Ardealite,
Fulvic acid,
MDU, its structural formula is:
Diethy-aceto oxalate,
CMC,
EDTA，
2, ardealite+MDU+EDTA improves the method in saline land, comprises the following steps:
(1) ardealite and fulvic acid ammonium are sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 30 days;
(2) MDU, diethy-aceto oxalate, CMC are mixed in the ratio of 50:5:5, be then evenly sprinkling upon saline and alkaline the earth's surface, and the 20cm that deep ploughs, make to mix, spray clear water, the saline land making 20cm dark is moistening, and keeps 20 days;
(3) EDTA 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, and the consumption of fulvic acid ammonium is 100kg/ mu, the mixture 40kg/ mu of MDU, diethy-aceto oxalate, CMC, and the consumption of EDTA is 20kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 900kg/ mu; The consumption of fulvic acid ammonium is 200kg/ mu; The mixture 60kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 35kg/ mu.
In heavy salinized ground, the consumption of ardealite is 1200kg/ mu; The consumption of fulvic acid ammonium is 300kg/ mu; The mixture 80kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 50kg/ mu.
Embodiment three
1, raw material prepares
Ardealite,
Fulvic acid,
MDU, its structural formula is:
Diethy-aceto oxalate,
CMC,
EDTA，
2, ardealite+MDU+EDTA improves the method in saline land, comprises the following steps:
(1) ardealite and fulvic acid ammonium are sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 5 ~ 30 days;
(2) MDU, diethy-aceto oxalate, CMC are mixed in the ratio of 50:3:2, be then evenly sprinkling upon saline and alkaline the earth's surface, and the 20cm that deep ploughs, make to mix, spray clear water, the saline land making 20cm dark is moistening, and keeps 13 days;
(3) EDTA 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, and the consumption of fulvic acid ammonium is 80kg/ mu, the mixture 30kg/ mu of MDU, diethy-aceto oxalate, CMC, and the consumption of EDTA is 15kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 750kg/ mu; The consumption of fulvic acid ammonium is 150kg/ mu; The mixture 50kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 28kg/ mu.
In heavy salinized ground, the consumption of ardealite is 1100kg/ mu; The consumption of fulvic acid ammonium is 250kg/ mu; The mixture 70kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 43kg/ 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
2o6kg/ 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
2o6kg/ 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 45 ~ 70% 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 ~ 60% 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 70 ~ 95% of ardealite process.
Claims (4)
1. improve the method in saline land with ardealite+MDU+EDTA, it is characterized in that, comprise the following steps:
(1) ardealite and fulvic acid ammonium are sprinkling upon saline and alkaline the earth's surface equably, and the 20cm that deep ploughs, ardealite is mixed with soil layer, keeps 5 ~ 30 days;
(2) mixture of MDU, diethy-aceto oxalate, CMC is sprinkling upon saline and alkaline the earth's surface, and the 20cm that deep ploughs, make to mix, and keep 5 ~ 20 days;
(3) EDTA 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 consumption of fulvic acid ammonium is 30 ~ 300kg/ mu; The amount of mixture of MDU, diethy-aceto oxalate, CMC is 20 ~ 80kg/ mu, and the consumption of EDTA is 2 ~ 50kg/ mu.
2. ardealite as claimed in claim 1+MDU+EDTA improves the method in saline land, it is characterized in that, the mixed ratio of described MDU, diethy-aceto oxalate, CMC is: 50:(1 ~ 5): (1 ~ 5);
Material in above-mentioned, separately deposits before use, mixes in use.
3. ardealite as claimed in claim 1+MDU+EDTA improves the method in saline land, it is characterized in that, described step (2) is after the mixture adding MDU, diethy-aceto oxalate, CMC, spray clear water, the saline land making 20cm dark is moistening.
4. ardealite as claimed in claim 1+MDU+EDTA improves the method in saline land, and 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, and the consumption of fulvic acid ammonium is 30 ~ 100kg/ mu, mixture 20 ~ 40kg/ mu of MDU, diethy-aceto oxalate, CMC, and the consumption of EDTA is 2 ~ 20kg/ mu;
In moderate saline-alkali soil, the consumption of ardealite is 600 ~ 900kg/ mu; The consumption of fulvic acid ammonium is 100 ~ 200kg/ mu; Mixture 40 ~ 60kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 20 ~ 35kg/ mu.
In heavy salinized ground, the consumption of ardealite is 900 ~ 1200kg/ mu; The consumption of fulvic acid ammonium is 60 ~ 80kg/ mu; Mixture 300 ~ 400kg/ mu of MDU, diethy-aceto oxalate, CMC, the consumption of EDTA is 35 ~ 50kg/ mu.
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| CN1854245A (en) * | 2005-04-27 | 2006-11-01 | 王莹 | Improvement of vegetative salt alkaline land soil |
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