CN105112065A - Saline-alkali soil improver containing phosphogypsum+methylene diurea and application method thereof - Google Patents
Saline-alkali soil improver containing phosphogypsum+methylene diurea and application method thereof Download PDFInfo
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- CN105112065A CN105112065A CN201510536384.3A CN201510536384A CN105112065A CN 105112065 A CN105112065 A CN 105112065A CN 201510536384 A CN201510536384 A CN 201510536384A CN 105112065 A CN105112065 A CN 105112065A
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Abstract
The invention provides a saline-alkali soil improver containing phosphogypsum+methylene diurea and an application method thereof. The saline-alkali soil improver containing phosphogypsum+methylene diurea comprises the following raw materials in parts by weight: 100-600 parts of phosphogypsum, 2-30 parts of fulvic acid, 5-25 parts of methylene diurea, 0.1-1 part of diethyl oxalate and 1-5 parts of hydroxymethyl cellulose. The application method comprises the following steps: treating with the phosphogypsum and fulvic acid, and treating with the methylene diurea, diethyl oxalate and hydroxymethyl cellulose. The saline-alkali soil improver in combination with the application method can quickly improve the saline-alkali soil, is suitable for plant growth, has wide application range, and is suitable for improving saline-alkali soil caused by different reasons in different regions. After being reasonably applied to the soil, the improver can improve the soil structure, neutralize the soil alkalinity, enhance the salt draining rate of the soil, enhance the soil fertility, promote the growth of crops and enhance the agricultural economy.
Description
Technical field
The present invention relates to saltings processing technology field, particularly relate to a kind of alkaline land modifying agent and the using method that contain phosphogypsum+MDU.
Background technology
Saltings 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 saltings.
Saltings is important land resources, and it is a kind of soil type 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 total area reaches more than 500,000,000 mus, and account for that the whole nation can utilize land area nearly 5%.The wherein total area in Coastal beach saltings about 2,350,000 hm
2, and now annual still with 2-3 ten thousand hm
2speed become silted up rise.Saltings 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 vital role.
The Method and Technology in domestic process saltings 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 phosphogypsum, calcium superphosphate, xanthohumic 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 improvement agent of soil salinization chemical harnessing is more, as gypsum, calcium sulfate, calcium superphosphate, trade waste phosphogypsum, industrial waste acid, fertilizer, detritus acid, flyash, peat, fermentation acid-sludge etc., these all achieve certain effect to improvement saltings, relatively more conventional is fertilizer, gypsum, and wherein gypsum is with Ca
2+displacement Na
+and improved saltings by sour neutralization bases; But the restriction be subject to as complex manufacturing, poor processing effect 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 a kind of alkaline land modifying agent and the using method that contain phosphogypsum+MDU.
The present invention is achieved by the following technical programs.
A kind of alkaline land modifying agent containing phosphogypsum+MDU provided by the invention, comprise the raw material of following weight part: phosphogypsum 100 ~ 600 parts, xanthohumic acid 2 ~ 30 parts, MDU 5 ~ 25 parts, oxalic acid diethyl ester 0.1 ~ 1 part, Walocel MT 20.000PV 1 ~ 5 part, and phosphogypsum, xanthohumic acid, MDU, oxalic acid diethyl ester, Walocel MT 20.000PV are deposited separately respectively.
Further, described alkaline land modifying agent is made up of the raw material of following weight part, phosphogypsum 400 parts, xanthohumic acid 18 parts, MDU 15 parts, oxalic acid diethyl ester 0.5 part, Walocel MT 20.000PV 3 parts.
The present invention simultaneously also provides a kind of using method of the alkaline land modifying agent containing phosphogypsum+MDU, according to the amount of application of the salt content determination modifying agent in saltings; Concrete steps are:
(1) first by after phosphogypsum and xanthohumic acid mixing, saline and alkaline the earth's surface is evenly sprinkling upon, and the 20cm that deep ploughs, phosphogypsum and xanthohumic acid are mixed with soil layer, keeps 5 ~ 30 days;
(2) MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are evenly sprinkling upon surface, saltings respectively, and the 20cm that deep ploughs, MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are mixed with soil layer, keeps 5 ~ 20 days.
Further, the amount of application of the described salt content determination modifying agent according to saltings is specially: the alkaline land modifying agent using 200 ~ 600kg/ mu at slight alkaline land, uses the alkaline land modifying agent of 600 ~ 1000kg/ mu in moderate saline-alkali soil; At heavy salinized the alkaline land modifying agent using 1000 ~ 1500kg/ mu.
Further, described step (2), after MDU, oxalic acid diethyl ester and Walocel MT 20.000PV mix with soil layer, to soil layer spray water, makes the soil layer that saltings 20cm is dark moistening.
Beneficial effect of the present invention is:
1) phosphogypsum is aobvious acid, and it can neutralize with the saltings of aobvious alkalescence, coordinates the use of xanthohumic acid, effectively can reduce the pH value in saltings;
2) contained in phosphogypsum calcium ion can with carbonate in saltings and bicarbonate radical generation chemical reaction, generate calcium carbonate and Calcium hydrogen carbonate, wherein calcium carbonate is water insoluble, Calcium hydrogen carbonate is slightly soluble in water, the character of calcium carbonate and Calcium hydrogen carbonate can impel Zinc fractions spherulitic texture, and its spherulitic texture can wrapping portion sodium ion, promotes desalinization of soil by flooding or leaching speed, reduce the soil weight simultaneously, increase soil water permeability;
3) MDU is line-like structures, it has binding agent effect, the spherulitic texture formed is reacted in phosphogypsum and saltings, after interpolation MDU, MDU can promote the formation of spherulitic texture, and MDU can fill up the vacancy position in the spherulitic texture of calcium carbonate and Calcium hydrogen carbonate formation simultaneously, makes spherulitic texture inside and outside portion relative insulation, reduce the sodium ion of mobility in soil, promote desalinization of soil by flooding or leaching speed;
4) MDU can slowly decompose at temperature and microbial process, and during decomposition, can form organic salt with the positively charged ion such as the sodium in soil, calcium, the solubleness of its organic salt is low, reduces the positively charged ion such as sodium, calcium of soil free state;
5) 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;
6) when using MDU, adding oxalic acid diethyl ester and Walocel MT 20.000PV raw material, MDU fast setting can be impelled, spherulitic texture can be impelled to be formed fast.
The present invention adopts the alkaline land modifying agent of above-mentioned formula, coordinates its using method, and it can quick improvement saline-alkali soil, suitable for crop grows, and the salting of soil soil improvement that this modifying agent operation strategies is comparatively wide, is applicable to different areas, different reason causes, is rationally manured into soil, Soil structure can be improved, reduce soil alkalinity, improve soil salt discharge rate, increase soil fertility, promote the growth of farm crop, improve rural economy.
Embodiment
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
Embodiment one
Present embodiments provide a kind of alkaline land modifying agent containing phosphogypsum+MDU, comprise the raw material of following weight part: phosphogypsum 100 parts, xanthohumic acid 2 parts, MDU 5 parts, oxalic acid diethyl ester 0.1 part, Walocel MT 20.000PV 1 part, and phosphogypsum, xanthohumic acid, MDU, oxalic acid diethyl ester, Walocel MT 20.000PV are deposited separately respectively.
Wherein the structural formula of MDU is:
The present embodiment additionally provides a kind of using method of the alkaline land modifying agent containing phosphogypsum+MDU simultaneously, and concrete steps are:
(1) first by after phosphogypsum and xanthohumic acid mixing, saline and alkaline the earth's surface is evenly sprinkling upon, and the 20cm that deep ploughs, phosphogypsum and xanthohumic acid are mixed with soil layer, keeps 5 days;
(2) MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are evenly sprinkling upon surface, saltings respectively, and deep plough 20cm, MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are mixed with soil layer, to soil layer spray water, make the soil layer that saltings 20cm is dark moistening, keep 5 days.
In the present embodiment, the amount of application according to the salt content determination modifying agent in saltings is specially: the alkaline land modifying agent using 200kg/ mu at slight alkaline land, uses the alkaline land modifying agent of 600kg/ mu in moderate saline-alkali soil; At heavy salinized the alkaline land modifying agent using 1000kg/ mu.
Embodiment two
Present embodiments provide a kind of alkaline land modifying agent containing phosphogypsum+MDU, comprise the raw material of following weight part: phosphogypsum 600 parts, xanthohumic acid 30 parts, MDU 25 parts, oxalic acid diethyl ester 1 part, Walocel MT 20.000PV 5 parts, and phosphogypsum, xanthohumic acid, MDU, oxalic acid diethyl ester, Walocel MT 20.000PV are deposited separately respectively.
Wherein the structural formula of MDU is:
The present embodiment additionally provides a kind of using method of the alkaline land modifying agent containing phosphogypsum+MDU simultaneously, and concrete steps are:
(1) first by after phosphogypsum and xanthohumic acid mixing, saline and alkaline the earth's surface is evenly sprinkling upon, and the 20cm that deep ploughs, phosphogypsum and xanthohumic acid are mixed with soil layer, keeps 5 ~ 30 days;
(2) MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are evenly sprinkling upon surface, saltings respectively, and deep plough 20cm, MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are mixed with soil layer, to soil layer spray water, make the soil layer that saltings 20cm is dark moistening, keep 20 days.
In the present embodiment, the amount of application according to the salt content determination modifying agent in saltings is specially: the alkaline land modifying agent using 600kg/ mu at slight alkaline land, uses the alkaline land modifying agent of 1000kg/ mu in moderate saline-alkali soil; At heavy salinized the alkaline land modifying agent using 1500kg/ mu.
Embodiment three
Present embodiments provide a kind of alkaline land modifying agent containing phosphogypsum+MDU, comprise the raw material of following weight part: phosphogypsum 400 parts, xanthohumic acid 18 parts, MDU 15 parts, oxalic acid diethyl ester 0.5 part, Walocel MT 20.000PV 3 parts, and phosphogypsum, xanthohumic acid, MDU, oxalic acid diethyl ester, Walocel MT 20.000PV are deposited separately respectively.
Wherein the structural formula of MDU is:
The present embodiment additionally provides a kind of using method of the alkaline land modifying agent containing phosphogypsum+MDU simultaneously, and concrete steps are:
(1) first by after phosphogypsum and xanthohumic acid mixing, saline and alkaline the earth's surface is evenly sprinkling upon, and the 20cm that deep ploughs, phosphogypsum and xanthohumic acid are mixed with soil layer, keeps 20 days;
(2) MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are evenly sprinkling upon surface, saltings respectively, and deep plough 20cm, MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are mixed with soil layer, to soil layer spray water, make the soil layer that saltings 20cm is dark moistening, keep 15 days.
In the present embodiment, the amount of application according to the salt content determination modifying agent in saltings is specially: the alkaline land modifying agent using 400kg/ mu at slight alkaline land, uses the alkaline land modifying agent of 800kg/ mu in moderate saline-alkali soil; At heavy salinized the alkaline land modifying agent using 1200kg/ 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 saltings of Haixing County, Cangzhou, Hebei Province to test, test group: use above-described embodiment one ~ embodiment three to process the saltings 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 phosphogypsum process is carried out to the saltings of different salt content, the consumption of the alkaline land modifying agent of the corresponding embodiment one ~ embodiment three of consumption difference of phosphogypsum, 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 saltings wheat yield of the modifying agent process of the present embodiment than using the high by 45 ~ 70% of phosphogypsum process; In moderate saline-alkali soil, use the saltings wheat yield of the modifying agent process of the present embodiment than using the high by 35 ~ 60% of phosphogypsum process; In heavy salinized ground, use the saltings wheat yield of the modifying agent process of the present embodiment than using the high by 70 ~ 95% of phosphogypsum process.
Claims (5)
1. the alkaline land modifying agent containing phosphogypsum+MDU, it is characterized in that: the raw material comprising following weight part: phosphogypsum 100 ~ 600 parts, xanthohumic acid 2 ~ 30 parts, MDU 5 ~ 25 parts, oxalic acid diethyl ester 0.1 ~ 1 part, Walocel MT 20.000PV 1 ~ 5 part, and phosphogypsum, xanthohumic acid, MDU, oxalic acid diethyl ester, Walocel MT 20.000PV are deposited separately respectively.
2. the alkaline land modifying agent containing phosphogypsum+MDU as claimed in claim 1, it is characterized in that: described alkaline land modifying agent is made up of the raw material of following weight part, phosphogypsum 400 parts, xanthohumic acid 18 parts, MDU 15 parts, oxalic acid diethyl ester 0.5 part, Walocel MT 20.000PV 3 parts.
3. the using method of the alkaline land modifying agent containing phosphogypsum+MDU as claimed in claim 1, is characterized in that: according to the amount of application of the salt content determination modifying agent in saltings; Concrete steps are:
(1) first by after phosphogypsum and xanthohumic acid mixing, saline and alkaline the earth's surface is evenly sprinkling upon, and the 20cm that deep ploughs, phosphogypsum and xanthohumic acid are mixed with soil layer, keeps 5 ~ 30 days;
(2) MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are evenly sprinkling upon surface, saltings respectively, and the 20cm that deep ploughs, MDU, oxalic acid diethyl ester and Walocel MT 20.000PV are mixed with soil layer, keeps 5 ~ 20 days.
4. the using method of the alkaline land modifying agent containing phosphogypsum+MDU as claimed in claim 3, it is characterized in that: the amount of application amount of the described salt content determination modifying agent according to saltings is specially: the alkaline land modifying agent using 200 ~ 600kg/ mu at slight alkaline land, uses the alkaline land modifying agent of 600 ~ 1000kg/ mu in moderate saline-alkali soil; At heavy salinized the alkaline land modifying agent using 1000 ~ 1500kg/ mu.
5. alkaline land modifying agent and the using method containing phosphogypsum+MDU as claimed in claim 3, it is characterized in that: described step (2) is after MDU, oxalic acid diethyl ester and Walocel MT 20.000PV mix with soil layer, to soil layer spray water, make the soil layer that saltings 20cm is dark moistening.
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|---|---|---|---|
| CN201510536384.3A CN105112065A (en) | 2015-08-28 | 2015-08-28 | Saline-alkali soil improver containing phosphogypsum+methylene diurea and application method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434495A (en) * | 2007-11-13 | 2009-05-20 | 任兆磊 | Phosphogypsum sustained-controlled compound fertilizer |
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2015
- 2015-08-28 CN CN201510536384.3A patent/CN105112065A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434495A (en) * | 2007-11-13 | 2009-05-20 | 任兆磊 | Phosphogypsum sustained-controlled compound fertilizer |
Non-Patent Citations (3)
| Title |
|---|
| 中国农业工程研究设计院，北京农业工程大学: "《农业工程手册 第2册 土地利用工程》", 30 May 1993, 北京:农业出版社 * |
| 赵临五: "《脲醛树脂胶黏剂-制备、配方、分析与应用》", 30 September 2005, 北京:化学工业出版社 * |
| 逢焕成: "《肥料合理施用与配制技术》", 30 June 2008, 北京:科学普及出版社 * |
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Application publication date: 20151202 |