CN102352254A - Red soil improving agent - Google Patents
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- CN102352254A CN102352254A CN2011102409264A CN201110240926A CN102352254A CN 102352254 A CN102352254 A CN 102352254A CN 2011102409264 A CN2011102409264 A CN 2011102409264A CN 201110240926 A CN201110240926 A CN 201110240926A CN 102352254 A CN102352254 A CN 102352254A
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Abstract
The invention discloses a red soil improving agent which comprises the following components by weight percent: 30%-40% of red mud, 15%-25% of sepiolite, 20%-30% of straw biomass char, 10%-15% of calcium hydroxide and 10%-15% of magnesium oxide. Full test results prove that, by adopting the red soil improving agent and a preparation method thereof provided by the invention, the problems of poor crop growth and low yield caused by soil acidification in red soil areas in China, serious shortage of supply of calcium, magnesium and other medium elements and the like can be effectively solved, thereby having abroad application prospects in the red soil areas in the South.
Description
Technical field
The present invention relates to soil improvement agent, relating in particular to can sweetening of the soil acidity and regulate the modifying agent of soil chemical properties.
Background technology
Receive the influence of high temperature, rainy factors such as envrionment conditions; Positively charged ions such as potassium, calcium, magnesium are easy to lose through approach such as leachings in the soil of China's southern area (abbreviation red soil); Iron-aluminium oxide content is high; Formed clay mineral is mainly the kaolinite class, and therefore, soil nutrient deficiency, acid strong, structure difference and preserve moisture and fertility ability are weak etc.; Having become low, the inferior major reason of this area's crop yield, also is the important factor of this regional agriculture sustainable development of restriction and comprehensive yield-power lifting.In recent years, receive influence of various factors such as fertilising, management, the trend of aggravation appears in the phenomenon of southern area soil acidification.Therefore, contain soil acidification to greatest extent, the acidity of improving the soil is to promote this area's agricultural to further develop and further promote the important leverage of integrated production capacity.
For many years, received extensive concern, as the problem that relates to red soil acidifying improvement is all arranged in country " 15 ", the Eleventh Five-Year Plan plan of science and technology about researchs such as red soil tart improvement; And the acid soil improving agent of development is also more down in the support of relevant problem, if any utilizing material such as trade waste alkaline residue and combining the report of uses such as modification, biomass char.But see that from integral body the cost of most of modifying agents is higher, the preparation process is complicated, lacks replenishing nutrient in the soil (particularly alkali nutrient).Therefore, even these modifying agents have certain effect in the soil acidity improvement, but its effect such as improvement to crop yield and soil others is comparatively limited, has limited its application in actual production.So exploitation can be concentrated with soil acidity, provided functions such as middle amount nutritive element nutrient, the proterties of improving the soil and raising soil productivity in the improver special of one; To southern area high grade and yield of crops, improvement of soil fertility and overall productivity in agriculture lifting etc., all has crucial meaning.
At present, domestic also do not see to have utilize agricultural crop straw to prepare biomass char and add trade waste such as red mud, mix with moderate-element such as calcium magnesium and use and tool sweetening of the soil acidity, regulate the middle element nutrient supply, increase crop yield and the technology record of the soil improvement agent that function such as the physico-chemical property of improving the soil and production cost are lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of red soil modifying agent, suppresses soil acidity when can make the red soil region increasing crop yield.
In order to solve the problems of the technologies described above; The invention provides a kind of red soil modifying agent, count by weight percentage and comprise: 30%～40% red mud, 15%～25% sepiolite, 20%～30% straw biomass be burnt, 10%～15% calcium hydroxide and 10%～15% Natural manganese dioxide.
Preferably,
20%～30% biomass char is that 40～50% agricultural crop straws are generated through carbonization, and agricultural crop straw comprises one or more in paddy rice, millet and the corn straw.
In order to solve the problems of the technologies described above, the invention provides a kind of preparation method of foregoing red soil modifying agent, it is characterized in that, comprise the steps:
By the preparation gross weight is the modifying agent calculating of double centner altogether; To contain 30～40 kilograms of natural wind dry doublings and cross the industrial waste red mud of 1.5～2.0mm sieve, 15～25 kilograms of sepiolites, 40～50 kilograms and pulverize and cross the paddy rice of 1.5～2.0mm sieve or the material uniform mixing of corn straw, add till an amount of water to the ability water outlet when holding in hand;
The material that will add water places in the cement pit and covers, and after banking up 3～5 days, in cement pit, moves into the carbide furnace, slowly is heated to 500～550 ℃ and kept 100 minutes～2.5 hours, naturally cools to room temperature;
From carbide furnace, take out the material that is cooled to room temperature, add 10～15 kg of hydrogen quicklime and 10～15 kilograms of Natural manganese dioxide, and uniform mixing, levigate mistake 0.20～0.30mm sieve is processed the red soil modifying agent.
In order to solve the problems of the technologies described above, the invention provides the application of a kind of foregoing red soil modifying agent on the crop yield that increases khoai.
In order to solve the problems of the technologies described above, the invention provides the application of a kind of foregoing red soil modifying agent aspect the acidifying of inhibition red soil.
Red soil modifying agent provided by the invention and preparation method thereof proves through sufficient test-results; Can solve poor, the problem that yields poorly of plant growth that moderate-elements such as China's red soil region soil acidification, calcium magnesium supply wretched insufficiencies etc. are caused effectively, be with a wide range of applications in the Southern Red Soil area.
Embodiment
Below in conjunction with preferred embodiment technical scheme of the present invention is at length explained.The specific embodiment that should be appreciated that following description only is used to explain the present invention, and is not used in qualification technical scheme of the present invention.
Embodiment 1
Red soil modifying agent provided by the invention; Count by weight percentage, comprising: 30%～40% red mud, 15%～25% sepiolite, 20%～30% straw biomass be burnt, 10%～15% calcium hydroxide (white lime) and 10%～15% Natural manganese dioxide (light burnt powder).
In the above-described embodiments, 20%～30% biomass char is that 40～50% agricultural crop straws (such as paddy rice, millet or corn straw) are generated through carbonization.
Embodiment 2
The method embodiment for preparing above-mentioned red soil modifying agent comprises the steps:
By the preparation gross weight is the modifying agent calculating of double centner altogether; To contain 30 kilograms of natural wind dry doublings and cross the industrial waste red mud of 1.5mm sieve, 20 kilograms of sepiolites, 50 kilograms and pulverize and cross the paddy rice of 1.5mm sieve or the material uniform mixing of corn straw, add till an amount of water to the ability water outlet when holding in hand;
The material that will add water places in the cement pit and covering (making it be in airtight relatively environment); After banking up 3～5 days; In cement pit, move into the carbide furnace; Slowly be heated to 500～550 ℃ and keep 100 minutes (make the agricultural crop straw carbonization and fully react), naturally cool to room temperature with materials such as blended red mud, sepiolites;
From carbide furnace, take out the material that is cooled to room temperature, add 15 kg of hydrogen quicklime (white lime) and 10 kilograms of Natural manganese dioxide (light burnt powder), and uniform mixing, the levigate 0.20mm sieve of crossing is processed red soil modifying agent of the present invention.
Embodiment 3
The method embodiment for preparing above-mentioned red soil modifying agent comprises the steps:
By the preparation gross weight is the modifying agent calculating of double centner altogether; To contain 40 kilograms of natural wind dry doublings and cross the industrial waste red mud of 2.0mm sieve, 15 kilograms of sepiolites, 45 kilograms and pulverize and cross the paddy rice of 2.0mm sieve or the material uniform mixing of corn straw, add till an amount of water to the ability water outlet when holding in hand;
The material that will add water places in the cement pit and covering (making it be in airtight relatively environment); After banking up 3～5 days; In cement pit, move into the carbide furnace; Slowly be heated to 500～550 ℃ and keep 2 hours (make the agricultural crop straw carbonization and fully react), naturally cool to room temperature with materials such as blended red mud, sepiolites;
From carbide furnace, take out the material that is cooled to room temperature, add 10 kg of hydrogen quicklime (white lime) and 15 kilograms of Natural manganese dioxide (light burnt powder), and uniform mixing, the levigate 0.25mm sieve of crossing is processed red soil modifying agent of the present invention.
Embodiment 4
The method embodiment for preparing above-mentioned red soil modifying agent comprises the steps:
By the preparation gross weight is the modifying agent calculating of double centner altogether; To contain 35 kilograms of natural wind dry doublings and cross the industrial waste red mud of 2.0mm sieve, 25 kilograms of sepiolites, 40 kilograms and pulverize and cross the paddy rice of 2.0mm sieve or the material uniform mixing of corn straw, add till an amount of water to the ability water outlet when holding in hand;
The material that will add water places in the cement pit and covering (making it be in airtight relatively environment); After banking up 3～5 days; In cement pit, move into the carbide furnace; Slowly be heated to 500～550 ℃ and keep 2.5 hours (make the agricultural crop straw carbonization and fully react), naturally cool to room temperature with materials such as blended red mud, sepiolites;
From carbide furnace, take out the material that is cooled to room temperature, add 12 kg of hydrogen quicklime (white lime) and 13 kilograms of Natural manganese dioxide (light burnt powder), and uniform mixing, the levigate 0.30mm sieve of crossing is processed red soil modifying agent of the present invention.
Test 1
Select near qiyang,hunan county Chinese Academy of Agricultural Sciences red soil experiment centre that the plot gesture is smooth, shape is upright, by nonirrigated farmland that the quaternary period, the laterite parent material development formed; Its area about 1 mu, fertility is barren and acid stronger, on this nonirrigated farmland, carries out field plot trial.
Test is provided with 5 kinds of treatment type, and be respectively: (CK) do not apply fertilizer (1); (2) single (NPK) to fertilize; (3) single organic fertilizer (M); (4) organic-inorganic fertilizer compounding application (NPK-M); (5) increase the 15 kilograms/667m of red soil modifying agent of the present invention that executes embodiment 2 on the basis to fertilize single
2(NPK-R).Experimental plot area 6.8m * 4.5m=30.6m
2, repeating 3 times, district's group is arranged at random; It is peanut that confession studies thing.
Behind the peanut seeding, observe growth periods such as its seeding stage, flowering period, ripening stage.After the maturation, gather in, dry respectively, measure peanut stem leaf and grain yield by the sub-district.
Before peanut seeding with results after, (0～20cm) soil behind uniform mixing, stays to take back about 1kg and indoorly dries naturally, pulverizes 20 orders, retains subsequent use to gather the arable layer of every sub-district respectively.From the sample of crossing 20 mesh sieves, take out 50～100 gram appearance, continue to pulverize and whole mistake 100 mesh sieves, retain subsequent use.All pedotheques together carry out the mensuration of physical and chemical indexs such as pH value, exchangeability acid, exchangeable base composition, nitrogen phosphorus potassium and organic content after off-test.
In this test, each is handled rate of fertilizer and is:
For single handle to fertilize (NPK), press nitrogenous fertilizer 5.2kg N/667m
2(folding urea 11.3kg/667m
2, urea contains N amount and calculates by 46%), phosphate fertilizer 3.75kg P
2O
5/ 667m
2(folding superphosphate of lime 31.3kg/667m
2, superphosphate of lime contains P
2O
5Amount is calculated by 12%), potash fertilizer 4.5kg K
2O/667m
2(folding vitriolate of tartar 8.7kg/667m
2, vitriolate of tartar contains K
2The O amount is calculated by 52%).
Handle (M) for single organic fertilizer, by using 1625.0 kilograms/667m of cow dung
2, according to measuring the result before using, the N-P-K content of cow dung is respectively N 0.32%, P
2O
50.25%, K
2O 0.15%, folding 5.2kg N/667m
2, 4.06kg P
2O
5/ 667m
2, 2.43kg K
2O/667m
2The insufficient part of npk nutrient amount of application was replenished with chemical fertilizer during single organic fertilizer was handled, and was promptly using 1625.0 kilograms/667m of cow dung
2The basis on, the principle according to the nutrient amount of application equates increases and executes K
2O 2.07kg/667m
2, amount to vitriolate of tartar 4.0kg/667m
2
Joining for organic-inorganic fertilizer and to execute processing (NPK-M), is to use at 4: 6 by the ratio of organonitrogen and inorganic nitrogen, behind the corresponding nutrient of phosphorus potash fertilizer in the deduction fertilizer, supplies with chemical fertilizer, promptly uses 650.0 kilograms/667m of cow dung
2, nitrogen 3.1kg/667m
2(close urea 6.8kg/667m
2); P
2O
52.1kg (close superphosphate of lime 17.7kg/667m
2); K
2O 3.5kg/667m
2(close vitriolate of tartar 6.8kg/667m
2).
The phosphate fertilizer of being used in the test, fertilizer are all used in plantation previous crops base manure, and nitrogenous fertilizer, potash fertilizer branch are made base manure and topdressed and use, and basic proportion of additional fertilizer is 6: 4 by total.
It is as shown in table 1 that each handles peanut harvesting back grain yield.
Table 1 different treatment rate ratio
Can find out from the result of table 1; In the acid soil of laterite parent material development in the quaternary period; The volume variance of peanut is obvious under the different treatment, increase on single basis to fertilize execute red soil modifying agent of the present invention (NPK-R) and handle after, the increase rate of peanut yield is bigger; Even compare with organic-inorganic fertilizer compounding application (NPK-M) processing that effect under conventional fertilizer application is best, its effect of increasing production is also fairly obvious.
Use output and other processing of red soil modifying agent processing of the present invention and compare, 119.2kg/667m is increased production in contrast (CK)
2, improve 94.3%; Handle increase 34.2kg/667m than single (NPK) to fertilize
2, improve 16.2%; Handle increase 45.1kg/667m than single organic fertilizer (M)
2, improve 22.5%; Handle raising the output 18.9kg/667m than organic and inorganic fertilizer compounding application (NPK-M)
2, improve 8.3%, its effect of increasing production is more obvious.
Test 2
Select the lower red soil nonirrigated farmland of pH value to compare test at Chinese Academy of Agricultural Sciences's Yueyang agricultural environment experiment centre; About 2 mu of land for growing field crops areas and physical features is smooth, shape is upright; The land for growing field crops that will be for experiment is divided into 16 sub-districts of 7.5 * 5=37.5 square metre and (divides into one group for a short time for per 4; Totally 4 groups, be respectively: I, II, III, IV).
Test is provided with the processing of 4 types, and be respectively: (CK) do not apply fertilizer (1); (2) single (NPK) to fertilize; (3) single organic fertilizer (M); (4) increase the 15 kilograms/667m of red soil modifying agent of the present invention that executes embodiment 3 on the basis to fertilize single
2(NPK-R).Each handles test all according to district's group arrangement mode at random, and each handles repetition 4 times; Study thing with corn as confession.
In this test, except that CK handled, all the other amounts of application of respectively handling npk nutrient kept consistent relatively, and the amount of application of nitrogenous fertilizer was 18kg N/667m when wherein chemical fertilizer was handled maize planting
2(folding urea 39.1kg/667m
2, urea calculates by containing N amount 46%), the amount of application of phosphate fertilizer is 6kg P
2O
5/ 667m
2Use (folding superphosphate of lime 50kg/667m
2, P in the superphosphate of lime
2O
5Content calculates by 12%), the amount of application of potash fertilizer is 12kg K
2O/667m
2(folding vitriolate of tartar 23.1kg/667m
2, vitriolate of tartar is by containing K
2O 52% calculates).Single organic fertilizer is for using pig manure, sampling analysis result when using, and N-P-K content is respectively and contains N 0.53%, P in the pig manure
2O
50.84%, K
2O 0.71%, and therefore, the pig manure amount of application is calculated as 3400.0 kilograms/667m by nitrogen fertilizer amount
2, wherein the amount of application of phosphorus potassium nutrition has surpassed the chemical fertilizer processing, therefore need not replenish.
In this test, phosphate fertilizer, fertilizer are all used in sowing previous crops base manure, modifying agent then soil turn over the back, use base manure and used before 3～5 days; Nitrogenous fertilizer and potash fertilizer are all made base manure, 40% by 60% and are topdressed and use.The mode that the fertilizer of using as base manure is all taked to spread manuer in holes in corn seeding applies, but should avoid directly contacting with corn seed.
Behind the corn seeding, observe growth phases such as its seeding stage, jointing stage, tasseling stage, flowering period, the phase of weaving silk, ripening stage.After the corn maturation, gather in, dry respectively, measure cauline leaf and grain yield by the sub-district.
Test is all gathered 0～20cm soil layer soil by method involving before corn seeding with after the results, behind uniform mixing, stay and take back indoor natural wind about 1kg and do, levigate and 20 mesh sieves, retain subsequent use.From the sample of crossing 20 mesh sieves, take out 50～100 gram appearance, continue levigate and whole mistake 100 mesh sieves, retain subsequent use.All pedotheques together carry out the mensuration of physical and chemical indexs such as pH value, exchangeability acid, exchangeable base composition, nitrogen phosphorus potassium and organic content after off-test.
In this test, results back maize grain yield is as shown in table 2.
Table 2 different treatment maize grain yield (kilogram/37.5m
2)
Comparison by table 2 different treatment maize grain yield can be found out; Use red soil modifying agent of the present invention and handle (NPK-R) maize grain yield; More singly execute n p k fertilizer and handle (NPK) increase by 20.4%; More single organic fertilizer is handled (M) increases by 12.4%, and than not fertilizer treatment (CK) increase by 36.6%, it is to the obvious effect of increasing production of corn.
Test 3
At the nonirrigated farmland of qiyang,hunan county Chinese Academy of Agricultural Sciences red soil experiment centre periphery selection laterite parent material development in a quaternary period, barren, the pH value 5.6 of this nonirrigated farmland fertility, the about 750m of area
2
In this nonirrigated farmland, carry out the field test sub-district, area is 8m * 5m=40m
2Set up four kinds of treatment type: (CK) do not apply fertilizer (1); (2) single (NPK) to fertilize; (3) single organic fertilizer (M); (4) single to fertilize+use the 15 kilograms/667m of red soil modifying agent of the present invention of embodiment 4
2(NPK-R).Test repetition 3 times, sub-district are by district's group arrangement at random, and supplying to study thing is root of Foldleaf Daylily.According to the modifying agent of the present invention of embodiment 1 method preparation spring root of Foldleaf Daylily transplant and spreaded manuer in holes in preceding 3～5 days, and avoid using simultaneously with n p k fertilizer.
Each dose of handling is respectively: CK handles and does not use any fertilizer.List is handled nitrogenous fertilizer to fertilize by per season 12.0kg N/667m
2Use (folding urea 26.1kg/667m
2, urea calculates by containing N 46%); Phosphate fertilizer is by per season 8kg P
2O
5/ 667m
2Use (folding superphosphate of lime 66.7kg/667m
2, superphosphate of lime is by containing P
2O
512% calculates); Potash fertilizer is by per season 10.0kg K
2O/667m
2Use (folding vitriolate of tartar 19.2kg/667m
2, vitriolate of tartar is by containing K
2O 52% calculates).Fertilizer is handled and is used pig manure, contains N 0.40%, P by sampling determination result before using
2O
50.36%, K
2O 0.52% calculates, and is 3000.0kg/667m to wait nitrogen amount conversion amount of application with single processing to fertilize
2, the phosphorus potassium nutrition had surpassed single amount of handling to fertilize during fertilizer was handled, and did not therefore need restock phosphorus potassium fertilizer.
Single to fertilize+use embodiment 4 red soil modifying agent of the present invention processing the npk nutrient amount of application with singly handle identically to fertilize, but use the red soil modifying agent 15kg/667m of the present invention that preceding 3～5 days hole pressing applying methods apply embodiment 4 at base manure
2
In the various fertilizer of being used, fertilizer and phosphate fertilizer, potash fertilizer is all as base manure, transplants during a preceding hole pressing applying method is manured into soil root of Foldleaf Daylily; Nitrogenous fertilizer is used according to base manure, the mode of topdressing for twice, and its ratio is 5: 3: 2, promptly topdresses 30% in base manure 50%, seedling stage, the flower bud phase topdresses 20%, and wherein base manure and phosphorus potash fertilizer are together used, and topdress and use at seedling stage, hole pressing in squaring period applying method respectively.Above-mentioned each field management of handling is identical with common land for growing field crops.
After root of Foldleaf Daylily is transplanted, observe its growth phase of record.Gather behind the chrysanthemum at every turn, weigh respectively, calculate root of Foldleaf Daylily output (fresh weight) by handling.
Before on-test with finish after, all gather 0～20cm soil layer soil by method involving, behind uniform mixing, stay and take back indoor natural wind about 1kg and do, levigate and 20 mesh sieves, retain subsequent use.From the sample of crossing 20 mesh sieves, take out 50～100 gram appearance, continue levigate and whole mistake 100 mesh sieves, retain subsequent use.All pedotheques together carry out the mensuration of physical and chemical indexs such as pH value, exchangeability acid, exchangeable base composition, nitrogen phosphorus potassium and organic content after off-test.
It is as shown in table 3 that root of Foldleaf Daylily output is respectively handled in test.
Table 3 different treatment root of Foldleaf Daylily rate ratio
Can find out from table 3 result; In test red soil nonirrigated farmland, their location, plant root of Foldleaf Daylily; Fertilizer treatment all shows effect of increasing production preferably; The more single organic fertilizer of effect of increasing production (M) treatment effect that wherein single (NPK) to fertilize handles is good, and this maybe be fast than fertilizer with fertilizer efficiency to a great extent, relevant than abundance etc. to the supply of this season crop nutrition content.And after increasing the red soil modifying agent of executing the embodiment of the invention 4 on single basis to fertilize, the output of root of Foldleaf Daylily more do not apply fertilizer (CK) handle and increased by 1.15 times, single (NPK) to fertilize handles output increases 43.3kg/667m
2, improved 21.3%, more single organic fertilizer (M) is handled output increases 82.8kg/667m
2, improved 50.7%, its effect of increasing production is fairly obvious.
Test 1～relevant physico-chemical property of test 3 front and back soil changes
Before the test with afore-mentioned test 1～test 3, mistake 20 orders of gathering respectively behind the off-test crop harvesting and retaining, the pedotheque of 100 mesh sieves, measure exchangeability acid, exchangeability H according to method involving
+, exchangeability Al
3+, pH value and nutrients such as organic matter and nitrogen phosphorus potassium content, the analytical results before and after the different tests is compared.Wherein, the soil analysis result of test 1 is as shown in table 4.
The relevant physico-chemical property variation of soil before and after the test under table 4 different treatment
Result from table 4 can find out; In this test, plant under the peanut condition; Except that contrast; The different treatment soil organism, alkali-hydrolyzable nitrogen, rapid available phosphorus, quick-acting potassium content all have certain amplitude to increase, i.e. nutrient surplus and in soil, accumulating relatively to some extent under this research Fertilization Level, and this deliverability to the raising soil nutrient has better effects.And soil pH value under the different treatment, exchangeability acid, exchangeability H
+, exchangeability Al
3+Content compares, then exchangeability acid, exchangeability H in the rising amplitude of soil pH value, the soil
+, exchangeability Al
3+The reduction amplitude of content all with single to fertilize+use the better effects if behind the red soil modifying agent of the present invention, pH value is handled than other increases about 0.1 unit, exchangeability acid content minimizing 0.2cmol (+)/kg, exchangeability H
+Content reduces 0.1cmol (+)/kg, exchangeability Al
3+Content also has certain amplitude to reduce, and promptly handles relatively with other, and it is remarkable to inhibition soil acidification, the acid effect of improving the soil to use red soil modifying agent of the present invention.
In conjunction with aforementioned different treatment peanut yield relatively, use modifying agent of the present invention after, peanut yield improves, soil acidity obtains improvement, acidifying is effectively controlled, its effect is very significant.
The soil analysis result is as shown in table 5 in the test 2.
The relevant physico-chemical property variation of soil before and after the test under table 5 different treatment
Can find out from the result of table 5; In the red soil nonirrigated farmland during maize planting; After using red soil modifying agent of the present invention, not only corn is had effect of increasing production preferably, and soil nutrient content there is also certain amplitude to increase; Soil pH value is in rising trend, the exchangeability acid content then has certain decline, exchangeability H
+, exchangeability Al
3+Content also handle and relatively have certain amplitude to reduce with other, this result is consistent with variation tendency under the aforementioned plantation peanut condition, explains that using this modifying agent has good effect really to the acidity of improving the soil.
The soil analysis result is as shown in table 6 in the test 3.
The relevant physico-chemical property variation of soil before and after the test under table 6 different treatment
Can find out that from the result of table 6 use red soil modifying agent of the present invention when planting root of Foldleaf Daylily in the red soil nonirrigated farmland, not only it has effect of increasing production preferably to root of Foldleaf Daylily, and has improved the physico-chemical property of soil to a great extent.In the index of correlation that this test is measured; After using red soil modifying agent of the present invention, the result of character such as soil nutrient and aforementioned plantation peanut, corn is roughly the same, and promptly organic have the certain amplitude increase with nutrient content; Soil pH value has certain amplitude to improve, exchangeability acid, exchangeability H
+, exchangeability Al
3+Content all have to a certain degree and to descend.This result explains equally, use modifying agent of the present invention after, not only crop is had good effect of increasing production, and has good acid improving effect simultaneously.
To those skilled in the art; After having understood content of the present invention and principle; Can be under the situation that does not deviate from the principle and scope of the present invention; Carry out various corrections and change on form and the details according to the method for the invention, but these are based on correction of the present invention with change still within claim protection domain of the present invention.
Claims (5)
1. a red soil modifying agent is characterized in that, counts by weight percentage to comprise: 30%～40% red mud, 15%～25% sepiolite, 20%～30% straw biomass be burnt, 10%～15% calcium hydroxide and 10%～15% Natural manganese dioxide.
2. according to the described red soil modifying agent of claim 1, it is characterized in that,
Said 20%～30% biomass char is that 40～50% agricultural crop straws are generated through carbonization, and said agricultural crop straw comprises one or more in paddy rice, millet and the corn straw.
3. the preparation method of a red soil modifying agent as claimed in claim 1 is characterized in that, comprises the steps:
By the preparation gross weight is the modifying agent calculating of double centner altogether; To contain 30～40 kilograms of natural wind dry doublings and cross the industrial waste red mud of 1.5～2.0mm sieve, 15～25 kilograms of sepiolites, 40～50 kilograms and pulverize and cross the paddy rice of 1.5～2.0mm sieve or the material uniform mixing of corn straw, add till an amount of water to the ability water outlet when holding in hand;
The material that will add water places in the cement pit and covers, and after banking up 3～5 days, in said cement pit, moves into the carbide furnace, slowly is heated to 500～550 ℃ and kept 100 minutes～2.5 hours, naturally cools to room temperature;
From said carbide furnace, take out the material that is cooled to room temperature, add 10～15 kg of hydrogen quicklime and 10～15 kilograms of Natural manganese dioxide, and uniform mixing, levigate mistake 0.20～0.30mm sieve is processed said red soil modifying agent.
4. the application of red soil modifying agent as claimed in claim 1 on the crop yield that increases khoai.
5. the application of red soil modifying agent as claimed in claim 1 aspect the acidifying of inhibition red soil.
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| CN102972113A (en) * | 2012-12-06 | 2013-03-20 | 江西省红壤研究所 | Acid reduction and humidity regulation method for red upland soilred-soil dryland |
| CN105330487A (en) * | 2015-11-30 | 2016-02-17 | 金正大生态工程集团股份有限公司 | Nutrient package fertilizer special for solanaceous vegetables and suitable for red soil dry land and application method thereof |
| CN105330437A (en) * | 2015-11-30 | 2016-02-17 | 金正大生态工程集团股份有限公司 | Special nutrient package fertilizer for solanaceous vegetables used for red earth wastelands and application method of special nutrient package fertilizer |
| CN105400519A (en) * | 2015-11-04 | 2016-03-16 | 湖南农业大学 | Method for rapidly remedying farmland with heavy metals in fallow period by using modifier |
| CN105985165A (en) * | 2015-04-18 | 2016-10-05 | 覃建忠 | Ecological environment-friendly fertilizer additive containing charcoal and preparation method thereof |
| CN107118058A (en) * | 2017-05-31 | 2017-09-01 | 中国农业科学院农业资源与农业区划研究所 | A kind of water conservation fertilizer changes the multi-functional red soil conditioner of acid type and its application |
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| CN110257080A (en) * | 2019-07-15 | 2019-09-20 | 东华大学 | A kind of acid soil renovation agent and its preparation method and application |
| CN110819357A (en) * | 2019-11-08 | 2020-02-21 | 东华大学 | Acidic soil remediation agent and preparation and application thereof |
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
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| CN105985165A (en) * | 2015-04-18 | 2016-10-05 | 覃建忠 | Ecological environment-friendly fertilizer additive containing charcoal and preparation method thereof |
| CN105400519A (en) * | 2015-11-04 | 2016-03-16 | 湖南农业大学 | Method for rapidly remedying farmland with heavy metals in fallow period by using modifier |
| CN105330487A (en) * | 2015-11-30 | 2016-02-17 | 金正大生态工程集团股份有限公司 | Nutrient package fertilizer special for solanaceous vegetables and suitable for red soil dry land and application method thereof |
| CN105330437A (en) * | 2015-11-30 | 2016-02-17 | 金正大生态工程集团股份有限公司 | Special nutrient package fertilizer for solanaceous vegetables used for red earth wastelands and application method of special nutrient package fertilizer |
| CN107118058A (en) * | 2017-05-31 | 2017-09-01 | 中国农业科学院农业资源与农业区划研究所 | A kind of water conservation fertilizer changes the multi-functional red soil conditioner of acid type and its application |
| CN107955614A (en) * | 2017-11-29 | 2018-04-24 | 南昌大学 | A kind of Southern Red Soil modifying agent and its application method based on mining area tailings |
| CN108329915A (en) * | 2017-12-21 | 2018-07-27 | 南京信息工程大学 | A kind of acidification red soil improving agent and its preparation and application based on maize straw |
| CN109575935A (en) * | 2019-02-14 | 2019-04-05 | 江西省农业科学院土壤肥料与资源环境研究所 | A kind of Red paddy field soil conditioner that per mu yield can be improved |
| CN109575935B (en) * | 2019-02-14 | 2020-11-17 | 江西省农业科学院土壤肥料与资源环境研究所 | Red-loam-type paddy field soil regulator capable of improving yield per mu |
| CN110257080A (en) * | 2019-07-15 | 2019-09-20 | 东华大学 | A kind of acid soil renovation agent and its preparation method and application |
| CN110257080B (en) * | 2019-07-15 | 2021-06-25 | 东华大学 | Acidic soil remediation agent and preparation method and application thereof |
| CN110819357A (en) * | 2019-11-08 | 2020-02-21 | 东华大学 | Acidic soil remediation agent and preparation and application thereof |
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
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