CN107418586B - Granular south rice field acid soil conditioner taking rice husks as matrix - Google Patents
Granular south rice field acid soil conditioner taking rice husks as matrix Download PDFInfo
- Publication number
- CN107418586B CN107418586B CN201510556136.5A CN201510556136A CN107418586B CN 107418586 B CN107418586 B CN 107418586B CN 201510556136 A CN201510556136 A CN 201510556136A CN 107418586 B CN107418586 B CN 107418586B
- Authority
- CN
- China
- Prior art keywords
- soil
- rice
- granular
- parts
- conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fertilizers (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention provides a granular south rice field acid soil conditioner taking rice hulls as a matrix, which comprises 25-38% of carbonized rice hulls, 10-20% of rice hull silica alkali, 14-25% of fly ash, 28-40% of silicon calcium magnesium phosphorus potassium fertilizer and 2-8% of polyacrylamide. The conditioner provided by the invention not only can obviously reduce the volume weight of soil, increase the porosity and large aggregate proportion of the soil and effectively avoid the soil hardening phenomenon, but also can provide a large amount of Ca2+、Mg2+、K+H adsorbed by plasma base ions and soil colloid+And Al3+Proportionally exchanging the isoacidic ions to obtain H+、Al3+OH carried by the conditioner itself‑And active silicon water to explain the released OH‑Neutralizing or precipitating, thus fundamentally solving the problems of acid and toxicity of the acid soil of the rice field.
Description
Technical Field
The invention relates to a granular southern rice field acidic soil conditioner taking rice husks as a matrix, belonging to the technical field of soil improvement.
Background
The paddy field is the largest cultivated land resource in south China, but under the desiliconization, iron-rich and aluminization effects, the silicon-aluminum rate of soil clay grains is gradually reduced, and exchangeable Al is adopted3+And a large amount of aluminum is generated, so that the soil is naturally acidified, and aluminum poison is formed. In recent years, excessive application of chemical fertilizers unbalance nutrients of farmland soil, and further accelerate the soil acidification process. The data show that the acid acreage of the farmland with the national pH < 5.5 is increased from 7% to 18% 30 years ago. Taking Hunan province as an example, the pH value of cultivated land is reduced from 6.4 to 5.9, i.e. 30 years later, compared with the second soil general survey in 1980The soil acidification variable corresponds to the extent of 300 years in nature.
The harm of soil acidification is mainly as follows: (1) influences the growth of rice, and researches show that: when the pH value is less than 5.5, the rice has invisible loss or premature senility; if the pH value is less than 5.2, the rice plants are dwarfed; the pH value is less than 4.5, and the rice yield is influenced; (2) the effectiveness of nutrients is influenced because the content of available nitrogen in the soil is highest when the pH value is 6-8; when the pH value is less than 6.5, the phosphorus in the soil is changed into iron aluminum phosphate to be consolidated, and when the pH value is less than 6.0, the contents of effective potassium, calcium and magnesium in the soil are sharply reduced; in addition, for medium trace elements such as calcium, magnesium, sulfur, boron, zinc, molybdenum and the like, the effectiveness is reduced along with the reduction of the pH value; (3) the activity of aluminum element in soil is influenced, the active aluminum in the soil is obviously increased along with the reduction of the pH value of the soil, the organic complex aluminum is greatly reduced, the aluminum poisoning of rice can be caused by the massive enrichment of the active aluminum, and the withered rice or even the yield reduction of the rice can be caused by serious cases.
In order to solve the above problems, CN103964975A discloses an acidic rice field soil conditioner and its using method, which comprises the following components: 25-70 parts of plant ash, 20-35 parts of charcoal, 20-35 parts of pasty lime and 1-15 parts of plant source organic fertilizer by weight. The technology can improve the acid paddy soil without deteriorating the soil structure, but the soil conditioner can not provide enough basic ions such as calcium, magnesium, potassium and the like and acid ions Al in the soil3+And H+Effective exchange is carried out, and meanwhile, effective silicon cannot be supplemented, so that the rice field acid soil cannot be fundamentally conditioned.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the granular southern rice field acid soil conditioner which not only can fundamentally condition the rice field acid soil, but also can effectively improve the soil structure, and can be used for a long time.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a granular south rice field acid soil conditioner taking rice husks as matrixes comprises the following raw material components:
22-38 parts of carbonized chaff;
10-20 parts of husk silica alkali;
14-25 parts of fly ash;
24-40 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
2-8 parts of polyacrylamide;
2-10 parts of a binder;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at the temperature of 500-600 ℃ for 4-6h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding 6-20 wt% of NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:3-1:8, boiling and keeping for 2-4h to obtain the chaff silica alkali.
The binder is attapulgite powder and/or bentonite.
The polyacrylamide is anionic polyacrylamide with the molecular weight of 300-500 ten thousand.
The preparation method of the granular southern rice field acid soil conditioner taking the rice husks as the matrix comprises the following steps:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 7-10 days to obtain a mixed material system;
(2) and (2) adding the binder into the mixed material system in the step (1), granulating, adding the polyacrylamide after the master batch is formed, drying and screening the formed particles to obtain the granular southern rice field acidic soil conditioner taking the rice hulls as the matrix.
And (3) before the binder is added in the step (2), crushing the mixed material system.
The Polyacrylamide (PAM) in the step 2 can be dissolved in water and sprayed on the surface of the particles, or can be scattered on the surface of the particles in a powder form, and the two ways depend on the addition amount of the PAM, and if the addition amount is larger, the PAM is preferably added in a powder form, and conversely, the PAM is preferably added in a solution form.
The particle size of the crushed mixed material system is 0.1-0.5 mm.
The particle size range of the granular southern rice field acidic soil conditioner granules taking the rice husks as the matrixes is 2-5 mm.
In the step (2), the temperature for drying the formed particles is 75-100 ℃.
The use method of the granular southern rice field acid soil conditioner comprises the following steps: the application mode is one-time bottom application. The application amount is generally 75-100 kg per mu, and the fertilizer is spread on the soil surface and ploughed shallowly when used for soil preparation.
The invention can fundamentally adjust the soil acidity of the southern paddy field, neutralize exchangeable acid and free acid in the soil, passivate exchangeable aluminum and active aluminum ions in the soil, and effectively solve the problem of acid and toxicity of the southern paddy field acidic soil. This is because the soil conditioner of the present invention can supply a large amount of Ca2+、Mg2+And K+Plasma-based ions, H adsorbed proportionally to the soil colloid+And Al3+Exchanging by isoacidic ions to obtain H+、Al3+And the OH of the soil active acid carried by the soil conditioner of the invention itself-And OH released by hydrolysis of silicate applied to the soil-Effectively neutralizing and precipitating.
The invention can obviously reduce the volume weight of the soil in the rice field, increase the porosity of the soil and the proportion of large aggregates, coordinate the relationship among water, temperature, air and nutrient substances in the soil, is beneficial to the activity of root systems and the absorption of nutrients, and provides good conditions for the growth and development of plants. This is because the PAM, the carbonized chaff and the fly ash of the present invention can significantly reduce the volume weight of the soil and increase the porosity and the proportion of large aggregates, wherein the effect of carbonizing the chaff and the PAM is relatively best in increasing the porosity of the soil and the PAM is relatively best in increasing the proportion of large aggregates. In addition, the PAM, the carbonized chaff and the fly ash in the invention have stronger water absorption and retention performances, wherein the PAM is a water retention material applied to more arid regions; the water absorption capacity of weathered coal, carbonized chaff and fly ash is more than one time of that of the material. According to the invention, the red soil structure of the rice field can be effectively improved after PAM, carbonized chaff, fly ash and other materials are compounded according to a certain proportion, the three phase ratio (solid phase: liquid phase: gas phase) of the soil is adjusted, the relationship among water, temperature, air and nutrient substances in the soil is coordinated, the leakage and loss of fertilizer are prevented, the utilization rate of fertilizer nutrients is improved, and the ecological environment is effectively protected.
The invention can effectively supplement effective silicon, exchangeable calcium and exchangeable magnesium in southern paddy soil, improve the rice yield and improve the rice quality. Under the condition of strong leaching, the soil in the south paddy field generally has desilicication, iron-rich and aluminizing effects and the phenomenon that basic ions such as calcium, magnesium, sodium, potassium and the like are leached out in large quantity, so that the contents of effective silicon, exchangeable calcium, exchangeable magnesium and quick-acting potassium and the degree of basic saturation are generally low. If these nutrients are lost for a long time, the growth of rice will be limited. The invention can greatly supplement effective silicon, exchangeable calcium and exchangeable magnesium in the southern paddy field soil and pointedly solve the problem of paddy growth nutrient deficiency.
The husk and the fly ash used in the invention are industrial and agricultural wastes, and the conditioner produced by the method can change waste into valuable and effectively relieve the environmental pressure. The rice hull is a byproduct after rice processing, has the characteristics of good toughness, porosity, low density, rough texture and the like, has the crude fiber content of 35.5-45 percent, the lignin content of 2-26 percent and the silicon dioxide content of 10-2 percent, and is a first-class improved material for reducing the volume weight of soil and increasing the porosity of the soil. At present, rice hulls are directly applied to rice fields and are difficult to degrade, so that the rice hulls are mainly used as fuel in rural areas; the industrial production is mainly used as a power plant and a raw material for extracting chemical products, but the industrial production still has a large amount of waste and is idle due to limited utilization amount.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the invention relates to a granular southern rice field acid soil conditioner taking rice husks as matrixesAfter the fertilizer is applied to acid soil, on one hand, the soil volume weight can be obviously reduced, the soil porosity and the proportion of large aggregates are increased, so that the balance and coordination among water, temperature, air and nutrient substances in the soil are realized, the utilization rate of fertilizer nutrients is improved, and the soil hardening phenomenon is effectively avoided; on the other hand, the conditioner can provide a large amount of Ca2+、Mg2+、K+Plasma-based ions, H adsorbed by soil colloids+And Al3+Proportionally exchanging the isoacidic ions to obtain H+、Al3+OH carried by the modifying agent of the invention itself-And OH liberated by hydrolysis of silicate-Neutralization or precipitation reaction is carried out, so that the problems of acid and toxicity of acid soil are effectively solved; in addition, the conditioner can effectively supplement the contents of effective silicon, exchangeable calcium and exchangeable magnesium in soil, improve the crop yield and improve the quality of agricultural products. In conclusion, the granular southern rice field acid soil conditioner taking the rice husks as the matrix can fundamentally improve the rice field acid soil, is suitable for long-term use and has higher safety.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a process flow diagram of the present invention for preparing a granular south rice field acidic soil conditioner using rice hulls as a substrate;
FIG. 2 is a graph showing the relationship between total amount of exchangeable acids and total amount of exchangeable bases in paddy field soil after the conditioner of the present invention is treated.
Detailed Description
In the following examples 1g is represented by 1 part by weight.
Example 1
The embodiment provides a granular southern rice field acid soil conditioner taking rice husks as matrixes, which comprises the following raw material components:
carbonized chaff, 33 parts by weight;
12 parts of husk silica alkali;
15 parts of fly ash;
30 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
2 parts by weight of anionic polyacrylamide (molecular weight 300 ten thousand);
2 parts of attapulgite powder;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at 500 ℃ for 6h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding a 20 wt% NaOH solution into the carbonized chaff in the reaction kettle, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:3, boiling and keeping for 4h to obtain the chaff caustic soda.
Further, the granular southern rice field acidic soil conditioner using the rice hulls as the matrix is prepared by the following method as shown in figure 1:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 7 days to obtain a mixed material system;
(2) adding the attapulgite powder into the mixed material system in the step (1), granulating, adding the anionic polyacrylamide after master batch forming, drying and screening the obtained formed particles at 75-100 ℃ to obtain particles with the particle size of 2-5mm, namely the conditioner, metering and packaging to obtain a conditioner product, and crushing the particles with the particle sizes of more than 5mm and less than 1mm again to obtain granules.
Example 2
The embodiment provides a granular southern rice field acid soil conditioner taking rice husks as matrixes, which comprises the following raw material components:
30 parts of carbonized chaff;
12 parts of husk silica alkali;
18 parts of fly ash;
27 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
anionic polyacrylamide (molecular weight 400 ten thousand), 7 parts by weight;
6 parts of bentonite;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at 600 ℃ for 4h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding 10 wt% NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:5, boiling and keeping for 3.5h to obtain the chaff silica alkali.
Further, the granular southern rice field acidic soil conditioner taking the rice husks as the matrix is prepared by the following method:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 8 days to obtain a mixed material system;
(2) crushing the mixed material system in the step (1) by a crusher, wherein the particle size of the crushed mixed material system is 0.1-0.5mm, then adding bentonite, granulating, adding the anionic polyacrylamide after the master batch is formed, drying and screening the obtained formed particles at 75-100 ℃ to obtain the granular conditioner with the particle size of 2-5 mm.
Example 3
The embodiment provides a granular southern rice field acid soil conditioner taking rice husks as matrixes, which comprises the following raw material components:
38 parts by weight of carbonized chaff;
10 parts of husk silica alkali;
17 parts of fly ash;
24 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
4 parts by weight of anionic polyacrylamide (molecular weight 450 ten thousand);
10 parts of bentonite;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at 550 ℃ for 5h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding 7 wt% NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:7, boiling and keeping for 2h to obtain the chaff silica alkali.
Further, the granular southern rice field acidic soil conditioner taking the rice husks as the matrix is prepared by the following method:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 7 days to obtain a mixed material system;
(2) crushing the mixed material system in the step (1) by a crusher, wherein the particle size of the crushed mixed material system is 0.1-0.5mm, then adding bentonite, granulating, adding the anionic polyacrylamide after the master batch is formed, drying and screening the obtained formed particles at 75-100 ℃ to obtain the granular conditioner with the particle size of 2-5 mm.
Example 4
The embodiment provides a granular southern rice field acid soil conditioner taking rice husks as matrixes, which comprises the following raw material components:
21 parts of carbonized chaff;
17 parts of husk silica alkali;
14 parts of fly ash;
36 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
5 parts by weight of anionic polyacrylamide (molecular weight 500 ten thousand);
7 parts by weight of a mixture consisting of attapulgite powder and bentonite in a mass ratio of 1: 1;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at 550 ℃ for 5h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding 15 wt% NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:4, boiling and keeping for 4 hours to obtain the chaff silica alkali.
Further, the granular southern rice field acidic soil conditioner taking the rice husks as the matrix is prepared by the following method:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 10 days to obtain a mixed material system;
(2) crushing the mixed material system in the step (1) by a crusher, wherein the particle size of the crushed mixed material system is 0.1-0.5mm, then adding the attapulgite powder and the bentonite, granulating, adding the anionic polyacrylamide after the master batch is formed, drying and screening the obtained formed particles at 75-100 ℃ to obtain the granular conditioner with the particle size of 2-5 mm.
Example 5
The embodiment provides a granular southern rice field acid soil conditioner taking rice husks as matrixes, which comprises the following raw material components:
22 parts of carbonized chaff;
20 parts of husk silica alkali;
14 parts of fly ash;
40 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer;
anionic polyacrylamide (molecular weight 500 ten thousand), 8 parts by weight;
6 parts by weight of a mixture consisting of attapulgite powder and bentonite in a mass ratio of 1: 1;
wherein the carbonized chaff is prepared by the following method:
carbonizing the rice husks at 550 ℃ for 5h, ventilating and cooling to room temperature to obtain the carbonized rice husks;
the husk silica alkali is prepared by the following method:
adding 6 wt% NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:8, boiling and keeping for 4h to obtain the chaff silica alkali.
Further, the granular southern rice field acidic soil conditioner taking the rice husks as the matrix is prepared by the following method:
(1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 10 days to obtain a mixed material system;
(2) crushing the mixed material system in the step (1) by a crusher, wherein the particle size of the crushed mixed material system is 0.1-0.5mm, then adding the attapulgite powder and the bentonite, granulating, adding the anionic polyacrylamide after the master batch is formed, drying and screening the obtained formed particles at 75-100 ℃ to obtain the granular conditioner with the particle size of 2-5 mm.
The use method of the granular southern rice field acidic soil conditioner described in the embodiments 1 to 5 of the present invention comprises: the application mode is one-time bottom application. The application amount is generally 75-100 kg per mu, and the fertilizer is spread on the soil surface and ploughed shallowly when used for soil preparation.
Comparative example 1
The present comparative example provides an acidic soil conditioner comprising the following components:
52 parts of plant ash;
28 parts of biochar;
28 parts of pasty lime;
8 parts of plant source organic fertilizer.
And (3) mixing and extruding the material components according to the parts by weight to obtain a mixed material with the granularity of 2-5mm, namely the acid soil conditioner.
Experimental example 1
The granular southern rice field acidic soil conditioner provided by the invention is subjected to a series of tests on rice, and achieves a good application effect.
The test is carried out in Jitai basin Tai and county in the middle of Jiangxi province, no conditioner is applied as a Control (CK), four dosage levels of the conditioner of the invention, namely 50 kg/mu (CK + T50), 75 kg/mu (CK + T75), 100 kg/mu (CK + T100) and 125 kg/mu (CK + T125), are additionally applied on the basis of no conditioner, each treatment is repeated for three times, 18 cells are counted, and the cell area is 30m2。
(1) The total amount, composition and saturation of the base of the paddy field soil improved by the soil conditioner
As can be seen from Table 1, the soil-exchangeable Ca of paddy fields treated with 50 kg/mu, 75 kg/mu, 100 kg/mu and 125 kg/mu of the soil conditioner of the present invention was additionally applied on the control basis as compared with the Control (CK)2+、Mg2+、K+The content and the total amount of exchangeable salt groups and the degree of saturation of the salt groups are obviously increased, and the amplification is increased along with the increase of the dosage of the conditioner. It can be seen that the conditioner of the present invention can effectively supplement exchangeable Ca adsorbed by the colloid2+、Mg2+、K+Plasma-based ions to increase the degree of base saturation.
TABLE 1-measurement results of composition, total amount and saturation of salt groups of soil exchangeable after improvement
Note: the data in the table are mean values. + -. standard deviation, marked with lower case letters to indicate the LSD multiple comparison results, and the same letters in the same column indicate no significant difference
(P <0.05), the following tables where letters appear have the same meaning.
(2) After the soil conditioner is improved, the soil of the rice field is exchanged with acid and exchanged Al3+And pH value
The conditioner is applied to adjust the pH value of acid soil of the southern paddy field and reduce exchangeable acid and exchangeable Al of the soil3+Has obvious effect. As can be seen from Table 2, the soil conditioner of the present invention was additionally applied to 50 kg/acre on the control basis as compared with the Control (CK)The pH values of the paddy field soil treated by 75 kg/mu, 100 kg/mu and 125 kg/mu are obviously increased, and the total amount of soil exchangeable acid and the exchangeable H are all obviously increased+And exchangeable Al3+The conditioner can effectively neutralize soil active acid and exchangeable acid, passivate exchangeable aluminum in soil and effectively solve the problem of acid and toxicity of soil in southern paddy fields.
TABLE 2 determination of soil-exchangeable and active acids (pH) after improvement
(3) The relationship between the total amount of the exchangeable acids and the total amount of the exchangeable bases in the soil of the rice field after the soil conditioner is improved
As can be seen from FIG. 2, the total amount of soil exchangeable bases in the paddy field increases significantly with the increase of the amount of the soil conditioner of the present invention, and the formula y is 0.0059x +0.0303 (R)20.99, wherein y is the total amount of soil exchangeable base, and x is the amount of conditioner used), the unit increase of the total amount of soil exchangeable base is about 0.006 cmol/kg; the total amount of soil-exchangeable acids is remarkably reduced along with the increase of the dosage of the soil conditioner, and the formula y is 0.0061x +0.0231 (R)20.99, where y is the total amount of soil-exchange acid and x is the amount of conditioner used), the unit reduction in the total amount of soil-exchange acid was also 0.006 cmol/kg. Thus, the soil conditioner of the present invention provides Ca2+、Mg2+And K+Acid ion (H) capable of adsorbing with soil colloid+And Al3+) Proportionally exchanging the exchanged H+、Al3+OH carried by the soil conditioner of the invention itself-And OH liberated by hydrolysis of silicate-Effectively neutralizing and precipitating. Therefore, the invention can fundamentally improve the acid soil of the southern paddy field.
(4) The soil conditioner of the invention improves the contents of available silicon, available phosphorus, available potassium and other nutrients in the soil of the rice field
As can be seen from Table 3, compared with the Control (CK) treatment, the organic carbon, the conductivity, the quick-acting phosphorus, the quick-acting potassium and the effective silicon of the soil treated by applying the soil conditioner of the invention 50 kg/mu, 75 kg/mu, 100 kg/mu and 125 kg/mu on the basis of the control are increased, the increase amplitude is obviously increased along with the increase of the dosage, and the treatment with the application amount of over 75 kg/mu achieves the obvious difference level. Therefore, the soil conditioner can effectively supplement the nutrient elements of quick-acting phosphorus, quick-acting potassium and effective silicon in the soil of the southern paddy field and improve the soil fertility, and the effect is more obvious when the using amount is larger.
TABLE 3-soil nutrients and conductivity of the improved Rice field
Note: the water-soil ratio of the conductivity is 5:1
(5) Single-season yield and four-season average yield of rice planted after conditioner application
The test results of the conditioner on the rice in four seasons show in table 4 that compared with the Control (CK), the rice in each season treated by applying the soil conditioner of the invention 50 kg/mu, 75 kg/mu, 100 kg/mu and 125 kg/mu on the basis of the control is improved, and the yield increase amplitude is found to be 7-10% after the rice in four seasons are averaged, so that the significant difference level is achieved. Therefore, the conditioner provided by the invention can be applied on the basis of the habit of farmers to fertilize, so that the yield of southern rice can be effectively improved.
TABLE 4 Single season yield and four season average yield of rice planted after conditioner application
Experimental example 2
The test is carried out in Jitai basin Taihe county in the middle of Jiangxi province, the conditioner is not applied as a Control (CK), 75 kg/mu of the conditioner in the comparative example 1 and 75 kg/mu of the conditioner in the invention are additionally applied on the basis of no conditioner, 3 treatments are carried out, each treatment is repeated for three times, 9 cells are totally used, the random blocks are arranged, and the area of each cell is 60m2。
As seen from Table 5, the total amount of soil-exchangeable acids and exchangeable H after conditioner treatment were higher than those obtained without conditioner treatment (CK)+Al exchangeable with soil3+The pH value of the soil is obviously improved. Compared with the conditioner of the comparative example, the pH value of the soil treated by the conditioner is obviously improved by 7.2 percent, and the total amount of soil exchangeable acid and exchangeable H are improved+Al exchangeable with soil3+The reduction is respectively 21.2%, 7.8% and 30.9%. Therefore, the conditioner has more obvious effect on improving the acidity of the paddy soil compared with other conditioners.
TABLE 5 determination of soil-exchangeable and active acids (pH) after improvement
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A granular south rice field acid soil conditioner taking rice husks as matrixes is characterized by comprising the following raw material components: 22-38 parts of carbonized chaff; 10-20 parts of husk silica alkali; 14-25 parts of fly ash; 24-40 parts of silicon-calcium-magnesium-phosphorus-potassium fertilizer; 2-8 parts of polyacrylamide; 2-10 parts of a binder; wherein the carbonized chaff is prepared by the following method: carbonizing the rice husks at the temperature of 500-600 ℃ for 4-6h, ventilating and cooling to room temperature to obtain the carbonized rice husks; the husk silica alkali is prepared by the following method: adding 6-20 wt% of NaOH solution into the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:3-1:8, boiling and keeping for 2-4h to obtain the chaff silica alkali.
2. The granular southern rice field acidic soil conditioner using rice hulls as a substrate according to claim 1, wherein the binder is attapulgite powder and/or bentonite.
3. The granular southern rice field acidic soil conditioner using rice hulls as matrix as claimed in claim 1 or 2, wherein the polyacrylamide is anionic polyacrylamide with molecular weight of 300-500 ten thousand.
4. A method of preparing a rice hull based granular southern rice field acidic soil conditioner as claimed in any one of claims 1 to 3, comprising the steps of: (1) respectively weighing carbonized chaff, chaff silica alkali, fly ash and silicon-calcium-magnesium-phosphorus-potassium fertilizer according to the weight parts, fully mixing and aging for 7-10 days to obtain a mixed material system; (2) and (2) adding the binder into the mixed material system in the step (1), granulating, adding the polyacrylamide after the master batch is formed, drying and screening the formed particles to obtain the granular southern rice field acidic soil conditioner taking the rice hulls as the matrix.
5. The method according to claim 4, wherein in the step (2), the mixed material system is further subjected to a pulverization treatment before the binder is added.
6. The method according to claim 5, wherein the mixed material system has a pulverized particle size of 0.1 to 0.5 mm.
7. The method according to any one of claims 4 to 6, wherein the rice husk-based granular southern rice field acidic soil conditioner granules have a particle size in the range of 2 to 5 mm.
8. The production method according to any one of claims 4 to 6, wherein the temperature at which the shaped particles are dried in step (2) is 75 to 100 ℃.
9. The granular southern rice field acid soil conditioner using the rice husks as the matrix as claimed in any one of claims 1 to 3 is applied to improvement of southern acid soil, and the application amount is 75-100 kg per mu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556136.5A CN107418586B (en) | 2015-09-01 | 2015-09-01 | Granular south rice field acid soil conditioner taking rice husks as matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556136.5A CN107418586B (en) | 2015-09-01 | 2015-09-01 | Granular south rice field acid soil conditioner taking rice husks as matrix |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107418586A CN107418586A (en) | 2017-12-01 |
| CN107418586B true CN107418586B (en) | 2020-05-01 |
Family
ID=60421988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510556136.5A Active CN107418586B (en) | 2015-09-01 | 2015-09-01 | Granular south rice field acid soil conditioner taking rice husks as matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107418586B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112017006300T5 (en) | 2016-12-17 | 2019-08-29 | Dead Sea Works Ltd. | Process for the production of potassium sulphate and magnesium sulphate from carnallite and sodium sulphate |
| RU2020124416A (en) | 2018-02-27 | 2022-03-29 | Дед Си Воркс Лтд. | METHOD FOR GRANULATION OF DUSTED POTASH |
| CN108587644A (en) * | 2018-07-05 | 2018-09-28 | 安徽袁粮水稻产业有限公司 | A kind of Acid Paddy Soils modifying agent |
| CN109865740A (en) * | 2019-02-14 | 2019-06-11 | 中国科学院地球化学研究所 | A method of calcareous Paddy Soils rice enrichment inorganic mercury and methyl mercury are reduced using bentonite combination charcoal |
| CN111732478B (en) * | 2020-07-02 | 2022-02-01 | 江西省农业科学院土壤肥料与资源环境研究所 | Honeycomb-shaped citrus orchard soil acidification conditioner convenient for mechanical application |
| CN111943778B (en) * | 2020-08-20 | 2022-03-25 | 甘肃省农业科学院土壤肥料与节水农业研究所 | Organic agricultural acid soil potassium conditioner |
| CN113736473B (en) * | 2021-10-19 | 2022-12-09 | 龙蟒大地农业有限公司 | Granular acid soil conditioner and preparation method thereof |
| CN114456000A (en) * | 2022-02-11 | 2022-05-10 | 辽宁省农业科学院 | Paddy field soil carbon fixing agent and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820125B (en) * | 2014-03-10 | 2016-02-17 | 江西省农业科学院土壤肥料与资源环境研究所 | Plant cigarette purple soil soil conditioner and using method thereof |
| CN104232098A (en) * | 2014-08-04 | 2014-12-24 | 江西省农业科学院土壤肥料与资源环境研究所 | Method for improving quality of flue-cured tobacco in red soil |
-
2015
- 2015-09-01 CN CN201510556136.5A patent/CN107418586B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107418586A (en) | 2017-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107418586B (en) | Granular south rice field acid soil conditioner taking rice husks as matrix | |
| CN108611100B (en) | Acidic soil conditioner and preparation method and application thereof | |
| CN107603632B (en) | Inorganic-organic composite soil conditioner and application thereof | |
| CN106748425B (en) | Conditioner for promoting selenium activation in selenium-containing paddy soil | |
| CN104788265A (en) | Saline-alkali soil biological improved fertilizer based on high-sulfur gangue and preparation method thereof | |
| CN106699443B (en) | Conditioner for promoting selenium activation in selenium-containing dry land soil | |
| CN103756684A (en) | Soil conditioner with multiple benefits | |
| CN111100645A (en) | Biochar-based composition and preparation method and application thereof | |
| CN108160037B (en) | Modified biochar and preparation method thereof | |
| CN105001020A (en) | Compound mixing fertilizer having heavy metal passivation effect, preparation method and uses thereof | |
| CN105367164A (en) | Ecological organic biofertilizer and its preparation method and use | |
| CN112239671A (en) | Passivator for arsenic and cadmium compound polluted farmland and use method thereof | |
| CN104177150A (en) | Iron tailing residue reclaimed soil and preparation method thereof | |
| CN111088050A (en) | Mineral-organic composite soil conditioner and preparation method thereof | |
| CN115637151B (en) | Acid soil conditioner and preparation method thereof | |
| CN101544890B (en) | A fertility-betterment type soil-conditioner and the preparation method thereof | |
| CN114409471A (en) | Mineral source biochar soil conditioner and preparation method thereof | |
| CN107556062A (en) | Quenched from flyash the method that water-soluble silicon prepares multiplex siliceous fertilizer | |
| CN105037014B (en) | A kind of Southern Red Soil nonirrigated farmland nutrient dilatation conditioner and preparation method thereof | |
| CN113024311A (en) | Boron-magnesium-calcium soil conditioner and preparation method thereof | |
| CN108383620A (en) | A kind of bamboo Biochar base soil modifier and the preparation method and application thereof | |
| CN116355618A (en) | Soil conditioner, preparation method thereof and application thereof in improving acid soil | |
| CN214032302U (en) | System for mineral base production biological carbon is fertile | |
| CN106995329B (en) | Fertilizer synergist and organic fertilizer using same | |
| CN114804955A (en) | Soluble slow-release type soil improvement and conditioning multielement fertilizer and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |