CN115093857A - Acidified soil remediation material and preparation method thereof - Google Patents
Acidified soil remediation material and preparation method thereof Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 133
- 239000000463 material Substances 0.000 title claims abstract description 87
- 238000005067 remediation Methods 0.000 title claims abstract description 83
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 95
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 95
- 241001330002 Bambuseae Species 0.000 claims abstract description 95
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 95
- 239000011425 bamboo Substances 0.000 claims abstract description 94
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 20
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 17
- 229910052913 potassium silicate Inorganic materials 0.000 claims abstract description 16
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 16
- 241000745988 Phyllostachys Species 0.000 claims abstract description 14
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000020477 pH reduction Effects 0.000 claims abstract description 6
- 241000011500 Phyllostachys praecox Species 0.000 claims description 28
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 19
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 229960001484 edetic acid Drugs 0.000 claims description 11
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 10
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 4
- 238000011282 treatment Methods 0.000 description 32
- 235000008545 Phyllostachys praecox Nutrition 0.000 description 27
- 230000000694 effects Effects 0.000 description 11
- 230000001965 increasing effect Effects 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 6
- -1 hydrogen ions Chemical class 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 244000302661 Phyllostachys pubescens Species 0.000 description 2
- 235000003570 Phyllostachys pubescens Nutrition 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001139 pH measurement Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 241001330024 Bambusoideae Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 244000184734 Pyrus japonica Species 0.000 description 1
- 241000383558 Thalia <angiosperm> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Materials Engineering (AREA)
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Abstract
The invention belongs to the technical field of soil remediation, and particularly relates to an acidified soil remediation material, a preparation method thereof and a soil remediation method based on the acidified soil remediation material, wherein the acidified soil remediation material comprises combustion residues of bamboo processing waste, ethylene diamine tetraacetic acid disodium, potassium metasilicate and lignosulfonate. The acidified soil remediation material and the soil remediation method thereof provided by the invention can effectively solve the problems of soil acidification and the like of the phyllostachys pracecox shoots forest and can effectively improve the yield of bamboo shoots.
Description
Technical Field
The invention belongs to the technical field of acidified soil remediation, and particularly relates to a material for remediating acidified soil of a bamboo forest cover, a preparation method of the material, and a method for remediating acidified soil based on the material.
Background
Phyllostachys praecox f prevalinalis, also known as a morning bamboo, belongs to a dual-purpose bamboo species of Phyllostachys in Phyllostachys of Bambusoideae of Gramineae (Graminae). The phyllostachys praecox is originally produced in Zhejiang, Jiangxi and other places, and is used as a bamboo shoot for mass introduction and cultivation in recent years due to the characteristics of early bamboo shoot, high yield, good economic benefit and the like. In a natural state, the phyllostachys praecox shoots are abundantly discharged in 3 to 4 months every year, however, the bamboo shoots are gathered to the market in spring and are low in price, so that the economic benefit of the bamboo forest for the bamboo shoots is difficult to greatly improve. In order to obtain better economic benefit, the technology of covering and increasing temperature and early-growing bamboo shoots in winter is applied in a large quantity in the process of bamboo forest management. Research shows that the covering thickness of the phyllostachys praecox in Hangzhou areas in the North Zhejiang province is more than 40cm, the bamboo shoot emergence time of the phyllostachys praecox after covering can be advanced by 4 months, and the early winter of the phyllostachys praecox in spring is advanced to the early winter of the previous year; the covering thickness of the Renzhu forest in the North of the Jiangxi reaches more than 30cm, and the bamboo shoot emergence time can be advanced by 4 and a half months after covering cultivation; the thickness of the covering layer of the Thalia japonica Maou and the like in northern Fujian is smaller, which is only about 25cm, but the bamboo shoot emergence time is earlier than that in Zhejiang and Jiangxi due to better hydrothermal conditions, and the yield is higher.
In addition to the great increase of the covering materials, the large-amount and excessive fertilizer input is another important factor for promoting the premature and high yield of the bamboo shoots. Researches show that the single-season fertilization times of partial areas in the process of forest management of the phyllostachys praecox shoots are up to more than 15 times, the fertilization amount is far higher than the growth demand of the phyllostachys praecox shoots, and a large amount of fertilizers are directly accumulated in soil due to long-term large, excessive and blind fertilizer input, so that the problems of soil quality reduction, bamboo forest degradation, water body pollution and the like are caused. Research shows that secondary disasters can happen within 10 years after the phyllostachys praecox forest is continuously operated, most phyllostachys praecox forests with the planting time of more than 15 years have degradation phenomena of different degrees represented by the liaison in Zhejiang at present, and soil acidification is the most important sign for the degradation of bamboo forest soil and the degradation of bamboo forest. Research shows that the accumulation of a large amount of basic ions in soil caused by excessive fertilization is a main factor influencing the growth of the phyllostachys praecox forest; research also indicates that the operation mode of changing the growth rule determines the occurrence of the secondary disaster of the phyllostachys praecox. The yield of the phyllostachys praecox forest is reduced and the economic benefit is reduced mainly when secondary disasters occur, so that the acidity adjustment of acidified soil, the rebalancing of the pH value and the improvement of the soil quality are important measures for improving the yield of the phyllostachys praecox forest and the sustainable development of the phyllostachys praecox forest.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: provides an acidified soil remediation material suitable for remediating forest soil for acidified phyllostachys pracecox shoots, a preparation method thereof and an acidified remediation method based on the acidified soil remediation material.
In order to solve the technical problems, the invention provides an acidified soil remediation material which comprises combustion residues of bamboo processing waste, disodium ethylenediaminetetraacetate, potassium metasilicate and lignosulfonate.
Further provides a preparation method of the acidified soil remediation material, which comprises the following steps:
s1, preparing an ethylene diamine tetraacetic acid disodium solution;
s2, adding the disodium ethylene diamine tetraacetate water solution into the combustion residues, and reacting for 24 hours at 50-60 ℃ under a closed condition to obtain an alkaline base material;
s3, adding lignosulfonate and potassium metasilicate into the alkaline base material and mixing to obtain the acidified soil remediation material.
Further, a soil remediation method based on the acidified soil remediation material is provided, and the method comprises the step of applying the acidified soil remediation material to the surface of the phyllostachys praecox planting soil to be remedied.
And the application of the acidified soil remediation material in remediation of acidified soil for the forests of phyllostachys pracecox shoots.
The invention has the beneficial effects that: the acidified soil remediation material provided by the invention can effectively neutralize the pH value of the phyllostachys pracecox shoot forest soil, effectively improve the yield of bamboo shoots, and improve the utilization rate of solid waste resources such as bamboo processing waste and combustion residues thereof. Experimental results show that the yield of the bamboo shoots in 32 months after the acidified soil remediation material provided by the invention is applied is improved by 58-81%, and the results are similar to the remediation results of the existing soil remediation method.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
An acidified soil remediation material comprising combustion residues of bamboo processing waste, disodium ethylenediaminetetraacetate, potassium metasilicate, and lignosulfonate.
Wherein the main body of the combustion remainder is grey white and alkaline, and the main components of the combustion remainder comprise oxides of Ca, Mg, K, Na, Si, P, Fe and Al and salts thereof. The ethylene diamine tetraacetic acid is used for modifying the combustion residues to complex the combustion residues, so that the adsorption capacity of the combustion residues on ions is improved. In the actual processing process, the bamboo processing waste should be ground before modification, and the combustion residue should be sieved through a 100-mesh sieve, so as to increase the surface area.
The fluidity and the formability of the acidified soil remediation material are improved by adding lignosulfonate, such as sodium lignosulfonate and the like, into the acidified soil remediation material, and the dispersibility of each component is improved by the lignosulfonate, and the lignosulfonate has certain wettability and complexation, so that the adsorption of a large amount of ions in soil by the acidified soil remediation material is further improved.
The potassium metasilicate can neutralize hydrogen ions in soil, so that the pH value of the soil is improved, meanwhile, orthosilicic acid formed after the potassium metasilicate is neutralized by the hydrogen ions can be directly absorbed and utilized by phyllostachys praecox, and the effects of promoting the growth of the phyllostachys praecox and improving the yield of the bamboo shoots are realized.
Further, the bamboo processing waste material is selected from at least one of bamboo tips, bamboo branches, bamboo joints, bamboo stumps and bamboo powder which are discarded in the bamboo processing process.
In one embodiment, the lignosulfonate is prepared from residual black liquor after pulping bamboo wood in paper making, by acidification-sulfonation-conversion-distillation, or by using the black liquor in paper making to prepare modified sodium lignosulfonate by the existing method, such as kujo, etc., written in the proceedings of the Xinyang academy of teachers and universities (Nature science edition), 2004, 7 th month, 17 th volume. Of course, the lignosulfonate may also be a commercially available lignosulfonate.
Further, the water solution of the disodium ethylene diamine tetraacetate and the combustion residues form an alkaline base material of the acidified soil remediation material;
the mass ratio of the aqueous solution of the ethylene diamine tetraacetic acid to the combustion residues in the alkaline base material is (2-3) to (8-12); preferably 3: 10.
The concentration of the disodium ethylene diamine tetraacetate aqueous solution is (4-7) g/100 mL. Preferably 5g/100 mL.
Further, the mass ratio of the alkaline base material to the lignosulfonate and the potassium metasilicate is (18-20): (0.8-1.2): (0.8-1.2). Preferably 18:1: 1.
A preparation method of the acidified soil remediation material comprises the following steps:
s1, preparing an ethylene diamine tetraacetic acid disodium solution;
s2, adding the disodium ethylene diamine tetraacetate aqueous solution into the combustion residues, and reacting for 24 hours at 50-60 ℃ under a closed condition to obtain an alkaline base material;
s3, adding lignosulfonate and potassium metasilicate into the alkaline base material and mixing to obtain the acidified soil remediation material.
Specifically, firstly, preparing an ethylene diamine tetraacetic acid disodium water solution according to the concentration of (4-7) g/100mL, then adding the ethylene diamine tetraacetic acid disodium water solution into the bamboo processing waste combustion residues, adding the ethylene diamine tetraacetic acid disodium water solution with the mass being 30% of the weight of the bamboo processing waste combustion residues, modifying the bamboo processing waste combustion residues to prepare an ethylene diamine tetraacetic acid salt mixture, and controlling the temperature to be constant at 50-60 ℃ for 24 hours under a closed condition to obtain the alkaline base material. And finally, mixing the alkaline base material with lignosulfonate and potassium metasilicate according to the mass ratio of (18-20) to (0.8-1.2) to obtain the acidified soil remediation material.
The acidified soil remediation material is alkaline and contains an ethylenediamine tetraacetate complex, oxides of Ca, Mg, K, Na, Si, P, Fe and Al and salts thereof, potassium metasilicate, orthosilicic acid and the like, so that salt ions in the phyllostachys pracecox shoots soil can be effectively captured, the content of the salt ions in the soil is reduced, and the absorption and utilization of silicon by phyllostachys pracecox can be promoted based on the silicon enrichment characteristic of phyllostachys pracecox, so that the growth of the phyllostachys pracecox and the yield of bamboo shoots are promoted.
A soil remediation method based on the acidified soil remediation material comprises the step of spreading the acidified soil remediation material on the surface of the phyllostachys praecox planting soil to be remedied.
Preferably, the acidified soil remediation material is broadcast at 0.45-0.6% by weight per 20cm deep soil.
The acidified soil remediation material is applied to remediation of acidified soil for the phyllostachys pracecox shoots. Wherein the forest soil for the phyllostachys pracecox shoots has the problem of soil acidification or large accumulation of basic ions caused by abuse based on the covering early shoot technology.
Example 1
A preparation method of an acidified soil remediation material comprises the following steps:
preparing an ethylene diamine tetraacetic acid aqueous solution according to the concentration of 5g/100mL, adding the ethylene diamine tetraacetic acid aqueous solution into the bamboo processing waste combustion residues, adding the ethylene diamine tetraacetic acid aqueous solution with the mass being 30% of the weight of the bamboo processing waste combustion residues, modifying the bamboo processing waste combustion residues to prepare ethylene diamine tetraacetic acid mixed slurry, and controlling the temperature to be constant at 55 ℃ for 24 hours under a closed condition to obtain an alkaline base material. And finally, mixing the alkaline base material with lignosulfonate and potassium metasilicate according to the mass ratio of 18:1:1 to obtain the acidified soil remediation material.
Example 2
A preparation method of an acidified soil remediation material comprises the following steps:
preparing an ethylene diamine tetraacetic acid aqueous solution according to the concentration of 5g/100mL, adding the ethylene diamine tetraacetic acid aqueous solution into the bamboo processing waste combustion residues, adding the ethylene diamine tetraacetic acid aqueous solution with the mass being 30% of the weight of the bamboo processing waste combustion residues, modifying the bamboo processing waste combustion residues to prepare ethylene diamine tetraacetic acid mixed slurry, and controlling the temperature to be constant at 60 ℃ for 24 hours under a closed condition to obtain an alkaline base material. And finally, mixing the alkaline base material with lignosulfonate and potassium metasilicate according to the mass ratio of 18:1:1 to obtain the acidified soil remediation material.
Examples of the experiments
A phyllostachys praecox cultivation area with the operation time of more than 15 years is selected as an experimental forest, and soil acidification secondary disasters occur in the phyllostachys praecox cultivation area. 4 experimental points are set up in the experimental forest, and 5 experimental cells of 10m multiplied by 10m are established at each experimental point. The soil weight is 20cm deep (2000000 kg/hm) 2 ) 0%, 0.15%, 0.3%, 0.45% and 0.6% of the acidified soil remediation material prepared in example 1 was added, with the specific amounts being 0kg/hm, respectively 2 、3000kg/hm 2 、6000kg/hm 2 、9000kg/hm 2 And 12000kg/hm 2 And are identified as treatment CK, treatment C-3000, treatment C-6000, treatment C-9000, and treatment C-12000, respectively.
The concrete soil remediation method comprises the following steps: after the old bamboos are cut for 4 months, the acidified soil remediation material is uniformly spread on the surface of the bamboo forest and is deeply turned for 20-30cm, bamboo rhizomes are kept as far as possible during deep turning, and the original root and rhizome system is not damaged. The soil needs to be kept moist after deep ploughing. If no rainfall occurs in a short period, the soil needs to be supplemented with water until the soil is thoroughly wetted. Soil pH and bamboo shoot yield measurements and statistics were performed at month 8, month 20 and month 32 of the experiment, respectively, and the results are shown in tables 1 and 2. The method is favorable for timely reaction of potassium metasilicate and hydrogen ions in soil to form orthosilicic acid, so that enrichment, absorption and utilization of orthosilicic acid by phyllostachys praecox are promoted, and production of phyllostachys praecox and yield of bamboo shoots are promoted.
TABLE 1
TABLE 2
As can be seen from Table 1, the pH value of the treated CK is the lowest in different time periods, the application of the acidified soil remediation material has obvious effect on the improvement of the pH value of the phyllostachys edulis soil, the pH value is continuously increased along with the increase of the application amount, and the soil pH value is between 5.46 and 7.27 and is 5.79 on average in 8 months after application, namely in the current year of bamboo shoots. The results of the differential significance analysis showed significant differences between treatments except for C-3000 and C-6000 (P < 0.05).
After the acidified soil remediation material is applied for 20 months, namely the pH measurement results of the soil treated differently in the next year show that the pH of the soil treated differently is reduced, wherein the reduction range of CK treatment is minimum and is 0.9%, the reduction range of C-12000 treatment is maximum and is 19.2%, and the average reduction range is 12.2%. The restoration effect of different treatments is reduced along with the increase of time, and the change of the effect is related to the application amount of the restoration material for the acidified soil. The results of differential significance analysis showed that after 20 months of application of the acidified soil remediation material, i.e., the second bamboo shoot season after remediation, there was no significant difference in soil pH between treatment C-12000 and treatment C-9000 (P >0.05), while there was still a significant difference in soil pH between C-9000 and the other treatments. The method shows that the restoration of the acidified soil still has a significant effect after the acidified soil restoration material is applied for 20 months.
The pH measurements of the differently treated soils after 32 months of application of the acidified soil remediation material, i.e., during the third year of bamboo shoot season, showed that the pH of the differently treated soils continued to decrease, with the CK treatment decreasing from 0.9% to 2.8%, with the C-12000 decreasing still the greatest, from 19.2% to 32.5%, and the average decreasing from 12.2% to 19.8%. Indicating that the healing effect of the different treatments is still decreasing with increasing time. In particular, the soil pH for CK treatment was still the lowest, 3.86. Treatment C-12000 and treatment C-9000 showed a soil pH of 4.91, and the significance analysis of the differences showed significant differences between the treatments (P <0.05) except that there were no significant differences between treatment C-12000 and treatment C-9000.
As can be seen from Table 2, the yield of bamboo shoots is lowest in different time periods when CK is treated, the application of the acidified soil remediation material has an obvious effect on the improvement of the yield of the bamboo shoots in the phyllostachys edulis forest, and the yield of the bamboo shoots is increased firstly and then reduced along with the increase of the application amount, which is mainly caused by the fact that the application amount of the acidified soil remediation material is increased to 12000kg/hm 2 In the season of the bamboo shoots, the pH value of soil is alkalescent, and the phyllostachys praecox is suitable for neutral to acid soil, so that the yield is reduced. Particularly, the maximum yield of the bamboo shoots in the current year 8 months after the acidified soil remediation material is applied is C-9000, the minimum yield is CK, and the yield of the bamboo shoots is 21.0-33.2t/hm 2 In the mean of 27.2t/hm 2 . The analysis result of difference significance shows that the treatment has significant difference (P) except for the treatment of C-3000 and C-12000<0.05)。
The measurement results of the yield of the bamboo shoots treated by C-12000 and C-9000 after the acidified soil remediation material is applied for 20 months, namely the yield of the bamboo shoots treated by different methods in the next year season show that the yield of the bamboo shoots treated by C-12000 and the yield of the bamboo shoots treated by C-9000 are increased by 22.6% and 0.6% respectively, mainly because the pH value of the soil treated by C-12000 is weak acid after the acidified soil remediation material is applied for 20 months, the soil treated by C-12000 is more suitable for the growth of the phyllostachys praecox, the yield of the phyllostachys praecox is increased, and the yield is still lower than that of C-9000. The yield of the treated CK bamboo shoots, the treated C-3000 bamboo shoots and the treated C-6000 bamboo shoots is reduced by 12.5 percent, 25.5 percent and 11.2 percent respectively. The results show that the remediation effect of different treatments is reduced along with the increase of time, and the pH value of the soil is changed into acid again, so that the yield of the bamboo shoots is reduced to some extent. The C-9000 yield remained highest with little change from treatment to treatment. The difference significance analysis result shows that except that the significant difference between the yield of the C-3000 bamboo shoots and the yield of the CK bamboo shoots does not exist, the significant difference (P <0.05) still exists between different treatments, and shows that after the acidified soil remediation material is applied for 20 months, namely in the second bamboo shoot season after remediation, the yield increasing effect of the acidified soil remediation material on the bamboo shoots still exists and the effect is significant.
The measurement result of the yield of the bamboo shoots treated in different years after the acidified soil remediation material is applied for 32 months, namely, the yield of the bamboo shoots treated in the third year shows that the yield of the bamboo shoots treated in different years is reduced except for C-12000, but the yield of the bamboo shoots treated in other years except C-6000 is not changed much compared with the yield of the bamboo shoots treated in the second year. The yield of the treated C-9000 bamboo shoots is still the highest, and the difference significance analysis result shows that the bamboo shoot yield still has significance difference (P <0.05) among different treatments besides the fact that the yield of the C-3000 bamboo shoots and the CK bamboo shoots does not have significance difference, so that the application of acidified soil remediation materials of the treatment C-6000, the treatment C-9000 and the treatment C-12000 still has significance effect on the increase of the bamboo shoot yield.
The experimental results show that the acidified soil remediation material provided by the invention can obviously improve the pH of the phyllostachys praecox forest soil which is subjected to secondary soil acidification disasters caused by covering and breeding bamboo shoots, the larger the application amount of the acidified soil remediation material is, the more the pH of the soil is increased, but the remediation effect is gradually reduced along with the increase of time.
Meanwhile, after the acidified soil remediation material is applied for 30 months, the yield of the bamboo shoots on the surfaces of different remediation treatment groups is increased. When the application amount of the acidified soil remediation material is 9000kg/hm 2 The yield of the bamboo shoots is highest, and the bamboo shoots can be kept relatively stable in three bamboo shoot seasons and are obviously higher than other treatment groups. Therefore, the application amount of the acidified soil remediation material is 9000kg/hm 2 The method is most suitable for soil remediation of forests for acidized phyllostachys pracecox shoots, and can remarkably increase the yield of the bamboo shoots.
The above description is only an example of the present invention, and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification, or directly or indirectly applied to the related technical field, are included in the scope of the present invention.
Claims (9)
1. The acidified soil repair material is characterized by comprising combustion residues of bamboo processing waste, disodium ethylene diamine tetraacetate, potassium metasilicate and lignosulfonate.
2. The acidified soil remediation material of claim 1, wherein said bamboo processing waste is selected from at least one of bamboo tips, bamboo branches, bamboo joints, bamboo stumps and bamboo powder discarded during bamboo processing.
3. The acidified soil remediation material of claim 1 wherein said aqueous solution of disodium ethylenediaminetetraacetate and said combustion residue comprise the alkaline base of said acidified soil remediation material;
the mass ratio of the aqueous solution of the ethylene diamine tetraacetic acid to the combustion residues in the alkaline base material is (2-3) to (8-12);
the concentration of the aqueous solution of the disodium ethylene diamine tetraacetate is (4-7) g/100 mL.
4. The acidified soil remediation material of claim 3 wherein the mass ratio of the alkaline base material to the lignosulfonate and potassium metasilicate is (18-20): (0.8-1.2).
5. A method for preparing an acidified soil remediation material as claimed in any one of claims 1 to 4 including the steps of:
s1, preparing an ethylene diamine tetraacetic acid disodium solution;
s2, adding the disodium ethylene diamine tetraacetate water solution into the combustion residues, and reacting for 24 hours at 50-60 ℃ under a closed condition to obtain an alkaline base material;
s3, adding lignosulfonate and potassium metasilicate into the alkaline base material and mixing to obtain the acidified soil remediation material.
6. A soil remediation method comprising the step of applying the acidified soil remediation material of any one of claims 1 to 4 to the surface of Phytic soil of a Phyllostachys praecox species to be remediated.
7. The soil remediation method of claim 6 wherein the acidified soil remediation material is applied at a rate of 0.45 to 0.6% by weight of the soil 20cm deep.
8. Use of the acidified soil remediation material of any one of claims 1 to 4 to remediate forested soil for phyllostachys pracecox shoots.
9. The use of the acidified soil remediation material of claim 8 to remediate acidified soil for a bamboo shoot forest, wherein said soil for a bamboo shoot forest has soil acidification problems and salt-based ion accumulation problems caused by the technology of covering early shoots.
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Citations (4)
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|---|---|---|---|---|
| CN102503728A (en) * | 2011-11-21 | 2012-06-20 | 浙江大学 | Modifier for acidized bamboo soil and application thereof |
| CN103044140A (en) * | 2012-12-30 | 2013-04-17 | 郭云征 | Buffering harmless plant ash compound fertilizer and preparation method thereof |
| CN108610214A (en) * | 2018-06-28 | 2018-10-02 | 杭州市临安区农林技术推广中心 | A kind of alkaline matrix fertilizer and its application process for improveing degeneration thunder Bamboo Soil |
| CN114106847A (en) * | 2021-12-21 | 2022-03-01 | 浙江农林大学 | Carbon-based conditioner for improving phyllostachys edulis acidified soil |
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2022
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| CN102503728A (en) * | 2011-11-21 | 2012-06-20 | 浙江大学 | Modifier for acidized bamboo soil and application thereof |
| CN103044140A (en) * | 2012-12-30 | 2013-04-17 | 郭云征 | Buffering harmless plant ash compound fertilizer and preparation method thereof |
| CN108610214A (en) * | 2018-06-28 | 2018-10-02 | 杭州市临安区农林技术推广中心 | A kind of alkaline matrix fertilizer and its application process for improveing degeneration thunder Bamboo Soil |
| CN114106847A (en) * | 2021-12-21 | 2022-03-01 | 浙江农林大学 | Carbon-based conditioner for improving phyllostachys edulis acidified soil |
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