CN108664755A - Lime application method for determination of amount during acidified soil is repaired - Google Patents
Lime application method for determination of amount during acidified soil is repaired Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 158
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 86
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 86
- 239000004571 lime Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims description 10
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003837 high-temperature calcination Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000012417 linear regression Methods 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical group [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
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Abstract
The invention belongs to agricultural technology fields, determine method more particularly to lime requirement in acidified soil reparation, including soil pH increment determination, after improvement soil lime treatment, the determination of soil pH increment, the determination of lime requirement model construction, crop field lime requirement after improve soil application difference lime；The present invention only chooses soil pH as test index, it is simple and practicable, also overcome the not high defect of estimation method precision, it more importantly considers soil pH after the damping characteristics and liming of different soils and changes big feature, acidified soil can accurately be calculated and improve lime consumption needed for certain unit, suitable for various types soil, there is important application value.
Description
Technical field
The invention belongs to agricultural technology fields, and in particular to lime requirement determines method in acidified soil reparation.
Background technology
The crop failure and crop-planting decline in benefits caused by soil acidification being on the rise, seriously restrict agriculture life
Produce sustainable development.The reparation of soil acidification is exactly to improve soil pH, and acidified soil pH value is adjusted to the pH required by crop
It is worth range.Liming is for improvement acid soil significant effect and most economical, convenient and ancient ameliorative measure, lime
Determination suitable for amount of application is the key that determine can whether this measure be effective and promote and apply.The amount of application and soil of lime
Type, soil pH, crop species are related with application purpose.Accurately method is to use Ca (OH) in laboratory at present2Drop
Determine method or calcium chloride exchange-neutralization titration, agrotechnical department of the general base of the required experiment condition of this method cannot be satisfied；Together
When, it also needs to carry out laboratory test to each field, is unfavorable for the agrotechnical department of peasant and base and uses.Patent《In acidified soil
The computational methods of lime requirement》(the patent No.：201310092298.9) it is to measure soil pH, CEC (soil cation exchanges
Amount), QAl (rock picker) and COM (soil organism), according to complicated formulas calculate lime requirement, but measurement
The indexs such as CEC, QAl and COM need special testing staff to be carried out in laboratory, and application is more difficult.The above method, though have
Certain advantage, but the agrotechnical department of peasant and base is because lack test condition, it can only be simple according to soil aciditiy and soil types
It estimates lime consumption, lacks specific aim.After correlative study shows liming, soil pH quickly increases, but after 30 days, by
In soil to the capacity of self-regulation of acidity, soil pH can be caused to decline, finally tend towards stability but the above method does not account for
Soil can cause practical lime requirement on the low side the capacity of self-regulation of acidity.To solve stone during current acidified soil is repaired
The problem of grey amount of application determination process, those skilled in the art also need to find a kind of practicable side really
Method, thus targetedly liming.
Invention content
The present invention mainly by measuring soil pH, provides a kind of determination side of lime requirement during acidified soil is repaired
Method.Mainly include the following steps
(1) determination of soil pH increment
The acid soil pH for needing to repair is measured, pH background values is denoted as；It needs to reach after applying lime in acidified soil topsoil
The predetermined soil pH arrived, is denoted as pH predetermined values；Soil pH increment is denoted as Δ pH, Δ pH=pH predetermined value-pH background values；
(2) soil lime treatment to be improved
Plough horizon soil sample 20kg to be improved, and mixing are chosen by five point sampling；By the acid soil to be improved of mixing
Earth is that 1kg weighs 10 parts respectively by weight, add 0.3 respectively in every part of soil, 0.6,0.9,1.2,1.5,1.8,2.1,
2.4,2.7,3.0g lime, is denoted as w respectively1~w10, lime mixes well with soil, is then respectively charged into plastic cup, keeps
Ground moistening；
(3) soil pH increment determines after improveing soil application different amounts lime
Soil pH in each plastic cup is measured after 30d, 40d, 50d respectively, 3 measured values are averaged, pH is denoted as1~pH10；
Soil pH average value in each plastic cup is subtracted into soil pH background values, difference is soil pH increment after liming, is denoted as
ΔpH1~Δ pH10；
(4) lime requirement model construction
By soil pH increment Delta pH after liming1~Δ pH10, with corresponding lime consumption w1~w10Straight line is carried out to return
Return, can get the quantitative relationship model of lime requirement w and soil pH increment Delta pH after liming：
W=a* Δs pH+b
In formula, w is soil lime requirement to be improved, g/kg；Δ pH is that the soil pH improved needed for soil to be improved increases
Amount, a, b are constant；
(5) crop field lime requirement determines
By 2250 000kg/hm of quality of topsoil soils2, substantially press topsoil soils 20cm, unit weight 1.12g/cm3It calculates, meter
Calculate the practical amount of application of soil crop field to be improved lime：
Crop field lime requirement=* 2 250 000 (kg/hm of w (g/kg)2)/1000=2250w (kg/hm2)。
In the above method, the depth of the soil plough horizon soil sample to be improved is 20cm.
Lime selects the lime stone after high-temperature calcination, and weathering crosses 100 mesh at powdered white lime after adding a small amount of water
It is used after sieve.
In the above method, the pH value of soil uses conventional method to measure (soil ratio 25:1) soil or in the market bought
PH testers directly read soil pH numerical value.
In the above method, plastic cup size is can load 1 kilogram of soil.Soil will keep moistening, cannot dry or
In waterflooding state.
In the above method, the soil pH value of 30d, 40d, 50d are measured, is because the changes of pH of liming is big.
Test of many times the result shows that, preceding 30d soil pH values are from big, the soil pH after 30~50d that is quickly increased to quickly to reduce variation
Value just can gradually tend towards stability, so the soil pH average value of 30d, 40d, 50d is selected to repair acid soil as liming
Soil pH actual value afterwards.
In the above method, lime requirement model construction can be carried out directly in Office excel tables.Using Δ pH as
The corresponding lime consumption of 10 processing is established scatter plot with soil pH increment, then adds line by abscissa, w as ordinate
Property Trendline and its formula, the formula are exactly lime requirement model.
Beneficial effects of the present invention
The present invention only chooses soil pH as test index, simple and practicable.Test equipment is at low cost, and test method is easy.
Lime requirement model construction can be carried out directly in Office excel tables in the present invention, easy to learn.The present invention overcomes
The defect that titration Instrumental and the purchase of drug difficulty, test method difficulty are grasped, also overcomes the not high defect of estimation method precision, more
It is important to consider that soil pH changes feature greatly after the damping characteristics and liming of different soils, can accurately calculate
Acidified soil improves the lime consumption needed for certain unit, is suitable for various types soil, has important application value.
Description of the drawings
Fig. 1 is 1 Baojing tobacco-growing soil lime consumption of embodiment and pH relationships；
Fig. 2 is 2 Huayuan tobacco-growing soil lime consumption of embodiment and pH relationships.
Case is embodied
It is described in conjunction with the embodiments the specific technical solution of the present invention.
Embodiment 1
Soil comes from Xiangxi Baojing County, and soil pH background values is 4.92.It is 1 public by weight by acid soil to be improved
Jin weighs 10 parts respectively, addition 0.3,0.6,0.9,1.2,1.5,1.8,2.1,2.4,2.7,3.0g lime in every part of soil,
Lime is mixed well with soil, is then respectively charged into plastic cup, and ground moistening is kept.It is measured respectively after 30d, 40d, 50d every
Soil pH in a plastic cup, average value is respectively 5.33,5.65,5.85,5.99,6.35,6.62,6.73,6.81,7.22,
7.46。
Soil pH average value in each plastic cup is subtracted into soil pH background values 4.92, difference is soil after liming
PH increments, respectively 0.41,0.73,0.93,1.07,1.43,1.70,1.81,1.89,2.30,2.54.By soil pH increment with
Lime consumption makees scatter plot, then adds linear trend and its formula, the result is shown in Figure 1.
Its lime consumption model is：
Y=1.0359x-0.257
R2=0.9883*, in above formula, y is lime consumption (g/kg), and x is soil pH incrementss.
In terms of Baojing County's soil lime consumption estimation models, Baojing soil pH often increases by 1 unit, need to apply white lime
1.05g/kg.If Baojing soil pH adjusted by 4.92 to 6.0, soil pH increment Delta pH=1.08.According to lime consumption mould
Type needs liming amount：
W=1.3059 × 1.08-0.257=1.15 (g/kg)
Baojing soil crop field lime requirement=2250 × 1.15=2587.50 (kg/hm2), about 172kg/ mus.This
A dosage is far above 80kg/ mus of peasant habit dosage.
In Baojing County 1/2 area of plot arable land to be improved lime is applied according to the 172kg/ mu dosages of result of calculation of the present invention
(T), another 1/2 area applies lime (CK) according to tradition 100kg/ mus of dosage of peasant household.
The pH value of soil (soil depth 0-20cm), soil pH value average out to 6.01, the CK of T processing are measured after 3 months
Soil pH average out to 5.23.The soil pH value that lime consumption is calculated using the present invention reaches predetermined value, and according to peasant household's tradition
The soil pH value of method liming is then not up to predetermined value.
Embodiment 2
Soil comes from Xiangxi Huayuan County, and soil pH background values is 4.76.It is 1 public by weight by acid soil to be improved
Jin weighs 10 parts respectively, addition 0.3,0.6,0.9,1.2,1.5,1.8,2.1,2.4,2.7,3.0g lime in every part of soil,
Lime is mixed well with soil, is then respectively charged into plastic cup, and ground moistening is kept.It is measured respectively after 30d, 40d, 50d every
Soil pH in a plastic cup, average value are respectively 4.97,5.07,5.62,5.77,6.09,6.26,6.22,6.56,6.40.
Soil pH average value in each plastic cup is subtracted into soil pH background values 4.76, difference is soil after liming
PH increments, respectively 0.21,0.31,0.86,1.01,1.33,1.50,1.46,1.80,1.64.By soil pH increment and lime
Dosage makees scatter plot, then adds linear trend and its formula, as a result sees Fig. 2.
Its lime consumption model is：
Y=1.4846x-0.1219
R2=0.9009*, in above formula, y is lime consumption (g/kg), and x is soil pH incrementss.
In terms of the soil lime consumption estimation models of Huayuan County, soil pH often increases by 1 unit, need to apply white lime 1.36g/
kg.If Huayuan soil pH adjusted by 4.76 to 6.0, soil pH increment Delta pH=1.21.According to lime consumption model, need to apply
With amount of lime w=1.4846 × 1.21-0.1219=1.67 (g/kg).
Huayuan soil crop field lime requirement=2250 × 1.67=3757.50 (kg/hm2), about 250kg/ mus.This
A dosage is far above 100kg/ mus of peasant habit dosage.
In Huayuan County 1/2 area of plot arable land to be improved lime is applied according to the 250kg/ mu dosages of result of calculation of the present invention
(T), another 1/2 area applies lime (CK) according to tradition 100kg/ mus of dosage of peasant household.
The pH value of soil (soil depth 0-20cm), soil pH value average out to 6.02, the CK of T processing are measured after 3 months
Soil pH average out to 5.12.The soil pH value that lime consumption is calculated using the present invention reaches predetermined value, and according to peasant household's tradition
The soil pH value of method liming is then not up to predetermined value.
In terms of two above case, the lime consumption needed for different acid soil improvements is different；It is of the same race in terms of model
Soil is adjusted to lime consumption needed for suitable soil pH needed for Different Crop and is also different.
In a particular application, lime is preferably white lime (lime stone is added weathering after a small amount of water indoors).Lime
It is sieved preferably by 100 mesh, is conducive to improve the effect for neutralizing acidity.In earth's surface, then lime is uniformly spread fertilizer over the fields before Soil tillage
It turns over, lime is sufficiently mixed with topsoil soils to be conducive to improve acid soil repairing effect.
Claims (3)
- Lime application method for determination of amount during 1. acidified soil is repaired, which is characterized in that mainly include the following steps：(1) determination of soil pH incrementThe acid soil pH for needing to repair is measured, pH background values is denoted as；It is needed after application lime in acidified soil topsoil to be achieved Predetermined soil pH is denoted as pH predetermined values；Soil pH increment is denoted as Δ pH, Δ pH=pH predetermined value-pH background values；(2) soil lime treatment to be improvedPlough horizon soil sample 20kg to be improved, and mixing are chosen by five point sampling；By the acid soil to be improved of mixing by Weight is that 1kg weighs 10 parts respectively, add 0.3 respectively in every part of soil, 0.6,0.9,1.2,1.5,1.8,2.1,2.4, 2.7,3.0g lime is denoted as w respectively1~w10, lime mixes well with soil, is then respectively charged into plastic cup, keeps soil Moistening；(3) soil pH increment determines after improveing soil application different amounts limeSoil pH in each plastic cup is measured after 30d, 40d, 50d respectively, 3 measured values are averaged, pH is denoted as1~pH10；It will be every Soil pH average value subtracts soil pH background values in a plastic cup, and difference is soil pH increment after liming, is denoted as Δ pH1 ~Δ pH10；(4) lime requirement model constructionBy soil pH increment Delta pH after liming1~Δ pH10, with corresponding lime consumption w1~w10Linear regression is carried out, it can Obtain the quantitative relationship model of lime requirement w and soil pH increment Delta pH after liming：W=a* Δs pH+bIn formula, w is soil lime requirement to be improved, g/kg；Δ pH is the soil pH increment improved needed for soil to be improved, a, B is constant；(5) crop field lime requirement determinesBy 2250 000kg/hm of quality of topsoil soils2, calculate the practical amount of application of soil crop field to be improved lime：Crop field lime requirement=* 2 250 000 (kg/hm of w (g/kg)2)/1000=2250w (kg/hm2)。
- Lime application method for determination of amount during 2. acidified soil according to claim 1 is repaired, which is characterized in that described to wait for The depth for improveing soil plough horizon soil sample is 20cm.
- Lime application method for determination of amount during 3. acidified soil according to claim 1 is repaired, which is characterized in that described Lime selects the lime stone after high-temperature calcination, and weathering makes at powdered white lime after sieving with 100 mesh sieve after adding a small amount of water With.
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| CN110632065A (en) * | 2019-11-20 | 2019-12-31 | 广东省生态环境技术研究所 | Method for calculating application amount of slaked lime material for improving acid soil |
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| CN111085535A (en) * | 2019-12-31 | 2020-05-01 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | Method for determining addition amount of quicklime in organic contaminated soil treatment and treatment method of organic contaminated soil |
| CN114048437A (en) * | 2021-12-10 | 2022-02-15 | 中化农业（临沂）研发中心有限公司 | Calculation method and application of alkalinity-reducing material application amount in agricultural saline-alkali soil |
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| CN110632065A (en) * | 2019-11-20 | 2019-12-31 | 广东省生态环境技术研究所 | Method for calculating application amount of slaked lime material for improving acid soil |
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| CN111085535A (en) * | 2019-12-31 | 2020-05-01 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | Method for determining addition amount of quicklime in organic contaminated soil treatment and treatment method of organic contaminated soil |
| CN114048437A (en) * | 2021-12-10 | 2022-02-15 | 中化农业（临沂）研发中心有限公司 | Calculation method and application of alkalinity-reducing material application amount in agricultural saline-alkali soil |
| CN114048437B (en) * | 2021-12-10 | 2023-09-08 | 中化农业（临沂）研发中心有限公司 | Calculation method and application of alkalinity reducing material application amount in agricultural saline-alkali soil |
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Application publication date: 20181016 |