CN112404124A - Method for interplanting, repairing and utilizing rhodiola paradoxa and passion fruit to pollute farmland soil with medium and light cadmium - Google Patents
Method for interplanting, repairing and utilizing rhodiola paradoxa and passion fruit to pollute farmland soil with medium and light cadmium Download PDFInfo
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- B09C1/00—Reclamation of contaminated soil
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- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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Abstract
The invention provides a method for repairing and utilizing moderate and light cadmium polluted farmland soil by interplanting rhodiola rosea and passion fruit, belonging to the technical field of soil repair. The method provided by the invention comprises the following steps: planting the Sedum plumbizincicola and the passion fruit in the cadmium-polluted soil to be repaired in an interplanting mode; and when the vines of the passion fruit grow to be 20-60 cm, guiding the vines to the shed frame. According to the method, the sedum plumbizincicola and the passion fruit are interplanted, the shady effect of the passion fruit is fully utilized, the sedum plumbizincicola is helped to safely spend summer, the biomass of the sedum plumbizincicola is improved, and the capacity of the sedum plumbizincicola for removing heavy metal cadmium in soil is further improved; the Sedum plumbizincicola can efficiently adsorb heavy metals in polluted soil, so that the passion fruit which is safe and reaches the standard can be produced, the economic benefit of farmers is improved, the win-win purpose of 'repairing while producing' is realized, and the method is a safe, efficient and high-economic-value method for repairing cadmium-polluted farmland soil.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to a method for remediating farmland soil polluted by medium and light cadmium by interplanting of sedum plumbizincicola and passion fruit.
Background
The soil environment condition of China is not optimistic overall, and the soil environment quality of agricultural land is great. According to the investigation bulletin of national soil pollution conditions in 2014, the exceeding rate of the soil point position of farmland cultivated land reaches 19.4%, main pollutants are inorganic heavy metals such as cadmium, nickel, copper, arsenic, mercury, lead and the like, and account for 82.8% of the exceeding rate of all pollutants, wherein the exceeding rate of the point position of Cd polluted soil is the highest and reaches 7%. The heavy metal pollution of agricultural land poses great threat to human living environment and ecological safety, and seriously restricts the development of social economy. The key to the treatment of the heavy metal polluted soil is to seek an efficient repair technology.
Plant extraction is the most promising technology at present, and is favored in the field of heavy metal contaminated soil remediation because of the capability of in-situ purification of heavy metals. The restoration period of the plants by utilizing the super-accumulation is long, the farmers have no benefit, and the restoration of the farmland pollution has great limitation. Therefore, the discovery and construction of a win-win mode of the plant restoration technology of 'efficient restoration and safe production' are very important.
Disclosure of Invention
In order to solve the problems, the invention provides a method for repairing and utilizing moderate and light cadmium polluted farmland soil by interplanting rhodiola rosea and passion fruit. The method provided by the invention can be used for treating and repairing heavy metal contaminated soil, can realize safe production, brings economic value and guarantees the benefits of farmers.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a method for repairing and utilizing moderate and light cadmium polluted farmland soil by interplanting rhodiola and passion fruits, which comprises the following steps: planting the Sedum plumbizincicola and the passion fruit in the cadmium-polluted soil to be repaired in an interplanting mode; and when the vines of the passion fruit grow to be 20-60 cm, guiding the vines to the shed frame.
Preferably, the planting mode of the Sedum plumbizincicola comprises cutting planting; the planting mode of the passion fruit comprises transplanting planting.
Preferably, the planting density of the Sedum plumbizincicola is 20000-25000 plants/mu; the planting density of the passion fruit is 100-120 plants/mu.
Preferably, the shed frame comprises a shed surface parallel to the ground, the shed surface is net-shaped, and the height of the shed frame is 160-200 cm.
Preferably, a nylon net is paved on the shed surface.
Preferably, the interplanting mode is as follows: interplanting passion fruit and Sedum plumbizincicola, wherein the row spacing of the Sedum plumbizincicola is 15-20 cm, the plant spacing is 15-20 cm, the row spacing of the passion fruit is 280-300 cm, and the plant spacing is 200-250 cm.
Preferably, the planting time of the Sedum plumbizincicola is 2-4 months; the planting time of the passion fruit is 1-3 months.
Preferably, the Sedum plumbizincicola is mown every year, and the mowing frequency is 1-3 times per year.
Preferably, after the rhodiola rosea and the passion fruit are planted, 600-800 kg/hm of compound fertilizer is applied every year2。
Preferably, before the passion fruit is planted, 10-20 kg of decomposed farmyard manure and 0.5kg of calcium magnesium phosphate fertilizer are applied to each hole; when planting, 2-3 kg/mu of Xiaobaobao is applied; in the growing period, 5-7 kg of Baumeijia 1# is used for drip irrigation or spray application for each mu, and the application is carried out once in 7-10 days; in the blooming period, 5-7 kg of Baumei No. 2 is used for each mu, or 3-5 kg of Baumei No. 0 and 2-3 kg of Baumei No. 2 are used for drip irrigation or spray application, and the application is carried out once in 7-10 days; in the harvesting period, 5-7 kg of Meijia 2# is used for drip irrigation or spray application in each mu, the application is carried out once in 7-10 days, and 3-5 kg of Meidu-sugar alcohol calcium boron is applied once in each mu.
Has the advantages that:
the invention provides a method for restoring and utilizing farmland soil polluted by medium and light cadmium by interplanting rhodiola and passion fruits, which comprises the following steps: planting the Sedum plumbizincicola and the passion fruit in the cadmium-polluted soil to be repaired in an interplanting mode; and when the vines of the passion fruit grow to be 20-60 cm, guiding the vines to the shed frame. According to the method, the sedum plumbizincicola and the passion fruit are interplanted, the shady effect of the passion fruit is fully utilized, the sedum plumbizincicola can be helped to live summer safely, the biomass of the sedum plumbizincicola is improved, and the capacity of the sedum plumbizincicola for removing heavy metal cadmium in soil is further improved; the Sedum plumbizincicola can efficiently adsorb heavy metals in polluted soil, so that the passion fruit which is safe and reaches the standard can be produced, the economic benefit of farmers is improved, the win-win purpose of 'repairing while producing' is realized, and the method is a safe, efficient and high-economic-value method for repairing cadmium-polluted farmland soil. The results of the embodiment show that the method of the invention obviously improves the survival rate of the sedum plumbizincicola, simultaneously the cadmium reduction rate of the soil is also obviously improved, the cadmium content in the passion fruit is less than 0.05mg/kg, and the passion fruit meets the latest national food safety standard.
Drawings
FIG. 1 is a schematic diagram of an interplanting mode of Sedum plumbizincicola and passion fruit according to the present invention;
FIG. 2 shows the annual cadmium removal rate for three different planting modes in application example 1.
Detailed Description
The invention provides a method for repairing and utilizing moderate and light cadmium polluted farmland soil by interplanting rhodiola and passion fruits, which comprises the following steps: planting the Sedum plumbizincicola and the passion fruit in the cadmium-polluted soil to be repaired in an interplanting mode; and when the vines of the passion fruit grow to be 20-60 cm, guiding the vines to the shed frame. According to the invention, through the growth of the passion fruit, the vines of the passion fruit climb onto the shed frame, and a natural shade shed is formed above the Sedum plumbizincicola, so that a good shade environment is provided for the Sedum plumbizincicola, the problem that the Sedum plumbizincicola spends summer is solved, the biomass of the Sedum plumbizincicola is improved, and the soil remediation effect is improved; cadmium in the soil is removed through absorption and enrichment of the Sedum plumbizincicola to heavy metal cadmium, the passion fruit which is safe and reaches the standard can be harvested, the economic benefit of farmers is improved, and the win-win purpose of 'repairing while producing' is realized. In addition, no obvious competitive relationship exists between the passion fruit and the rhodiola crenulata in the growth space, the passion fruit is only planted and erected in the first year, only field management needs to be paid attention to in the future 3-4 years, the planting cost is relatively low, the harvest is objective, and the benefits of farmers are ensured.
The invention plants the Sedum plumbizincicola and the passion fruit in the cadmium polluted soil to be repaired in an interplanting mode. The invention has no special requirements on the types of the Sedum plumbizincicola and the passion fruit and can be prepared by adopting common commercially available varieties. The cadmium-polluted soil to be repaired is preferably medium-light cadmium-polluted soil, and the concentration of cadmium in the soil is preferably 0.3-3 mg/kg. In the invention, the planting time of the rhodiola rosea is preferably 2-4 months, more preferably 3 months, and even more preferably 3 ten days; the rhodiola crenulata is preferably replaced every year. In the invention, the passion fruit is preferably replaced for 3-4 years; the planting time of the passion fruit is preferably 1-3 months, more preferably 3 months, and even more preferably 3 last ten days of the first year. The invention preferably plants the Sedum plumbizincicola and the passion fruit in spring, and the survival rate is improved by utilization. The invention has no special requirements on the planting sequence of the Sedum plumbizincicola and the passion fruit, and both the Sedum plumbizincicola and the passion fruit can be planted preferentially. In the invention, the rhodiola plumbizincicola and the passion fruit are planted in an interplanting mode; the interplanting mode is preferably as follows: interplanting passion fruit and Sedum plumbizincicola, wherein the row spacing of the Sedum plumbizincicola is 15-20 cm, the plant spacing is 15-20 cm, the row spacing of the passion fruit is 280-300 cm, and the plant spacing is 200-250 cm; more preferably, the line spacing of the Sedum plumbizincicola is 20cm, the plant spacing is 20cm, the line spacing of the passion fruit is 300cm, and the plant spacing is 250 cm. In the invention, the plant spacing between the passion fruit and the adjacent Sedum plumbizincicola is preferably 15-20 cm, and more preferably 20 cm. The interplanting mode of the sedum plumbizincicola and the passion fruit is shown in figure 1, wherein a is the plant spacing of the sedum plumbizincicola, and b is the row spacing of the sedum plumbizincicola; c is the plant spacing of the passion fruits; d is the row spacing of the passion fruit.
According to the invention, through intensive growth of the passion fruit, a natural shading effect can be achieved on the sedum plumbizincicola, the sedum plumbizincicola can be helped to safely pass hot summer in the south, the biomass of the sedum plumbizincicola is effectively improved, the growth cycle of the sedum plumbizincicola is prolonged, and the removal effect of soil cadmium is improved.
In the invention, the planting mode of the Sedum plumbizincicola preferably comprises cutting planting. In the invention, the rhodiola crenulata is preferably selected from seedlings with consistent size and good growth vigor. In the invention, the planting density of the Sedum plumbizincicola is preferably 20000-25000 plants/mu, more preferably 2200-2400 plants/mu, and even more preferably 2300-2350 plants/mu. According to the sedum plumbizincicola repair method, the ridge is preferably covered with the mulching film, and the mulching film is preferably covered with a proper amount of soil and compacted, so that the survival rate of the sedum plumbizincicola is improved, and the repair efficiency is improved. The method preferably keeps sufficient field moisture, keeps the ditch to be dredged in plum rain, and replenishes seeds and transplants the replenisher seedlings in time during the management period.
In the invention, the planting mode of the passion fruit preferably comprises transplanting planting. In the invention, the hole size for planting the passion fruit seedlings is preferably (50-60 cm) × (50-60 cm), and more preferably 60cm × 60 cm. In the invention, the planting density of the passion fruit is preferably 100-120 plants/mu, more preferably 110-120 plants/mu, and even more preferably 110-115 plants/mu. According to the method, the planting density of the passion fruit is optimized, the rhodiola plumbago can be effectively shaded, the survival rate of the rhodiola plumbago is improved, and the repairing efficiency is improved.
After planting, when the vines of the passion fruit grow to be 20-60 cm, the preferable length is 30cm, and the vines are led to a shed frame. The invention preferably utilizes ropes to guide the passion fruit vines onto the trellis. In the invention, after the vines are led to the shed frame, the newly grown vines are led to the shed frame according to the growth condition of the passion fruit in 3-4 years. The shed frame preferably comprises a shed surface parallel to the ground, and the shed surface is preferably uniformly pulled into a grid shape by cloth strips or iron wires; in the invention, the height of the shed frame is preferably 160-200 cm, and more preferably 180 cm. The method preferably uses the cement columns as the struts of the shed frame, and the cement columns are erected on the cadmium-polluted soil to be repaired according to the row spacing of 2-3 m. In the invention, the shed surface is arranged above the support columns, and a nylon net is preferably paved on the shed surface. The trellis mode of the invention can ensure that the passion fruit has better shading effect on the Sedum plumbizincicola, is beneficial to the growth of the Sedum plumbizincicola, further improves the survival rate and the repair efficiency of the Sedum plumbizincicola, and has more obvious shading effect after the nylon net is paved on the trellis surface. The passion fruit is planted only once, is simple and convenient to operate and low in cost, and can be harvested for 3-4 years continuously, so that the economic benefit of farmers is greatly improved.
In the invention, after the rhodiola rosea and the passion fruit are planted, 600-800 kg/hm of compound fertilizer is applied every year2More preferably 700kg/hm2So as to ensure the normal growth of the Sedum plumbizincicola and the passion fruit and further improve the cadmium removal effect.
Before the passion fruit is planted, 10-20 kg of decomposed farmyard manure and 0.5kg of calcium magnesium phosphate fertilizer are preferably applied to each hole, and 15kg of decomposed farmyard manure and 0.5kg of calcium magnesium phosphate fertilizer are further preferably applied to each hole, so that the soil is fertilized to meet the basic nutritional requirements of the Sedum plumbizincicola and the passion fruit; during planting, 2-3 kg/mu of small root fertilizer is preferably applied to promote the rooting of the Sedum plumbizincicola and the Passion fruit; in the growing period, 5-7 kg of Baumei 1# is preferably used for drip irrigation or drenching application for each mu, the drip irrigation or drenching application is carried out once in 7-10 days, more preferably 6kg of Baumei 1# is preferably carried out for each mu, the drip irrigation or drenching application is carried out once in 9 days, the developed growth of root systems is promoted, and the stems are made to be thick and strong; in the blooming period to the expanding period, 5-7 kg of Baumei 2# is preferably used per mu, or 3-5 kg of Baumei 0# and 2-3 kg of Baumei 2# are used for carrying out drip irrigation or drenching application for 7-10 days, more preferably 6kg of Baumei 2# is used per mu, or 4kg of Baumei 0# and 2.5kg of Baumei 2# are used for carrying out drip irrigation or drenching application for 9 days, so that flowers are prevented from falling off, the condition of flower and fruit falling is reduced, and the yield is increased; in the harvesting period, 5-7 kg of Meijia 2# is preferably used for drip irrigation or drenching per mu, the application is carried out once in 7-10 days, 3-5 kg of Meidu-sugar alcohol calcium boron is preferably used for each mu, more preferably, 6kg of Meijia 2# is used for drip irrigation or drenching per mu, the application is carried out once in 9 days, and 4kg of Meidu-sugar alcohol calcium boron is preferably used for each mu, so that the fruits are plump enough and big, the weight is increased, and the quality of the fruits is improved. The invention aims at the growth characteristics of the passion fruit at each stage, fertilizers are applied according to the needs, the survival rate and the yield of the passion fruit can be further improved, and the economic benefit is improved.
According to the invention, the Sedum plumbizincicola is mowed every year according to the growth condition of the Sedum plumbizincicola, and the mowed frequency is preferably 1-3 times per year, and is further preferably 2 times. The height of the cut stubble of the mowing is preferably 2-4 cm, and more preferably 3 cm. When the mowing frequency is 2 times per year, the mowing time of the invention is preferably 7 th and 11 th. The sedum plumbizincicola is preferably manually or mechanically mowed, and a mowed fresh sample can be continuously transplanted to enlarge the restoration area and can also be safely incinerated for harmless treatment.
In the present invention, the harvest time of the passion fruit is preferably 8 months and 12 months per year. The cadmium content in the passion fruit harvested by the method is less than 0.05mg/kg (GB2762-2017), the passion fruit can be eaten at ease within the standard value of the latest national food safety standard, considerable economic benefit can be obtained in market sales, and the income of farmers is improved.
For further illustration of the present invention, the following will describe in detail a method for remedying and utilizing moderate and light cadmium contaminated farmland soil by interplanting of Sedum plumbizincicola and Passion fruit according to the present invention with reference to the examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Interplanting of Sedum plumbizincicola and Passion fruit
And land preparation is carried out 15 days before planting. Turning over to a depth of more than 16cm, drying the blank for 3 days, scattering and non-sticking soil blocks, rotary tillage for 3 times by using a rotary cultivator, and ridging. The width of the ridge surface of the ditch compartment is 1.2m, the width of the compartment ditch is 0.3m, and the depth of the compartment ditch is 0.2m, preferably no accumulated water exists. Building a shed frame on the farmland to be restored, using cement columns with the specification of 250cm multiplied by 8cm as strut shed frames, wherein the spacing between rows is 2 multiplied by 3m, and the upper parts of the shed frames are connected into a net shape by iron wires in a vertical and horizontal mode.
The row spacing of each ridge is 30cm, each row is planted by adopting a mode that 2 passion fruits are spaced by 10 sedum plumbizincicola, the plant spacing between sedum plumbizincicola is 20cm, the row spacing is 20cm, the plant spacing between the passion fruits and the sedum plumbizincicola is 20cm, the row spacing is 20cm, the plant spacing between the passion fruits is 250cm, the row spacing is 300cm, and the width of each ridge is 10 cm. The planting density of the rhodiola rosea is 23000 plants/mu, and the planting density of the passion fruit is 110 plants/mu.
Planting sedum plumbizincicola in the last ten days of 3 months, selecting robust seedlings to transplant, wherein the cutting and transplanting interval is less than 3d, the plant height is 5-10 cm, the stubble is remained for 2cm, and 3 seedlings are planted in each hole in a cuttage mode; and (3) beginning to plant passion fruit in the last ten days of 3 months, and applying 15kg of decomposed farmyard manure and 0.5kg of calcium magnesium phosphate fertilizer in each hole for fully and uniformly mixing with soil 15 days before planting. During planting, strong grafted seedlings (disease-resistant and high-yield) are selected for transplanting, the seedlings are placed in the center of a hole, sufficient root fixing water is poured after soil is filled, 2.5kg of root setting water is used per mu, and 400 times of water is added to prepare the seedling planting water. The planting hole depth is 50cm, and the size is 60 multiplied by 60 cm. When the passion fruit vines grow to be more than 30cm, the vines are guided to the shed net through ropes.
Applying 600kg/hm of compound fertilizer every year2Before the passion fruit seedlings are planted, a certain proportion of biomass charcoal can be added into the pits to ensure that the fruits reach the standard. In the growth period of the passion fruit, drip irrigation or spray application is carried out on each mu of the passion fruit by using the plant Meijia No. 1 (5-7 kg), and the drip irrigation or spray application is carried out once in 7-10 days; during the period from flowering to expansion, 6kg of Baumeijia 2# is used for drip irrigation every mu, and the fertilizer is applied once every 9 days; in the harvesting period, 6kg of Meijia 2# is used for drip irrigation every mu, the Meditalo-sugar alcohol calcium boron is applied once in 9 days, and 4kg of Meidu-sugar alcohol calcium boron is applied every mu.
Mulching films are covered on the ridges, a proper amount of soil is covered on the films for compaction, sufficient field moisture is kept, and the ditches are dredged in plum rain season. And (4) finding missed seeding or multicast seeding during seeding, and timely reseeding and transplanting reseeding. The Sedum plumbizincicola is mown once in 7 months and 11 months of the current year of planting. And harvesting the passion fruit in 8 months and 12 months of the year of planting the passion fruit.
Comparative example 1
Single-action mineral-covered sunshade net
The same planting method as that of the example 1 is adopted, except that the sedum plumbizincicola is singly used, passion fruit is not planted, and a nylon net is covered on a shed frame.
Comparative example 2
Single-action mineral-stonecrop-uncovered sunshade net
The planting method is the same as that of the embodiment 1, except that the rhodiola rosea is singly planted, the passion fruit is not planted, and a nylon net is not covered on a shed frame.
Application example 1
And in 2019-2020, a field test is carried out in a medium-light cadmium pollution area in villages of town thinking of Xingteng, Shunying, Yangxi, Guilin, Guangxi province, wherein the climate type is subtropical seasonal humid climate, and the annual average temperature is about 19 ℃. The average annual precipitation is between 1500 and 1700mm and the relative humidity is 80 percent. The experiment was conducted with 3 cells A, B, C, cell a using the method of example 1, cell B using the method of comparative example 1, and cell C using the method of comparative example 2, each experimental area having an area of 2 acres. And (3) collecting surface soil samples in each cell, mixing the surface soil samples into one soil sample by adopting a five-point sampling method, and marking the longitude and latitude of each sampling point. The physical and chemical properties of the soil to be tested are shown in the table 1. And after the test is finished, the cadmium content of the soil and the plant is collected and detected according to requirements, the yield is measured according to a sample, the growth condition, the survival rate and other changes of the plant are recorded, and the results are shown in tables 2-4.
TABLE 1 basic physicochemical Properties of the soil in the test areas
TABLE 2 removal of cadmium from the overground part of Sedum plumbizincicola in Experimental area A and biomass thereof
As shown in Table 2, the total cadmium removal amount of the rhodiola rosea in two crops was 30.65g, and the annual average cadmium removal rate was 21.97% in terms of 150t of the plough layer soil weight per mu. In the planting mode of the embodiment 1 of the invention (interplanting of Sedum plumbizincicola and passion fruit) after 2-crop remediation, the cadmium content in the soil is 0.74mg/kg, and the cadmium reduction rate of the soil is 20.43%.
TABLE 3 removal of cadmium from the overground part of Sedum plumbizincicola in Experimental area B and biomass thereof
As shown in Table 3, the total cadmium removal amount of the two batches of Sedum plumbizincicola was 28.76g, and the cadmium content in the soil after remediation was 0.89 mg/kg. The annual average cadmium removal rate of the sedum plumbizincicola (2 stubbles) can reach 19.56 percent by 150t of the plough layer soil weight per mu. In a planting mode of a comparative example 1 (Sedum plumbizincicola crop-sunshade net), the cadmium reduction rate of the soil is 19.39 percent after 2-crop restoration.
TABLE 4 removal of cadmium from the overground part of Sedum plumbizincicola in Experimental area B and biomass thereof
The experimental results are shown in table 4, the total cadmium removal amount of the two batches of Sedum plumbizincicola is 15.89g, and the annual average cadmium removal rate is 11.13% calculated by 150t of plough layer soil weight per mu. Compared with the comparative example 1, the biomass of the 2 nd crop of the Sedum plumbizincicola is suddenly reduced, and the repair efficiency is also greatly reduced. The cadmium content in the repaired soil is 0.86mg/kg, and the cadmium reduction rate of the soil is only 9.47 percent.
Compared with the background value of the cadmium content of the soil, the cadmium content of the soil is obviously reduced in the three treatment modes. Compared with single-action Sedum plumbizincicola-no sunshade net, the interplanting of Sedum plumbizincicola-passion fruit obviously improves the survival rate of Sedum plumbizincicola, and simultaneously the cadmium reduction rate of soil is also obviously improved by 20.4 percent (figure 2). Compared with the single-action sedum plumbizincicola-covered sunshade net treatment, the annual cadmium removal amount and the soil cadmium reduction rate reduction effect are not different greatly, the overall cadmium reduction effect is good, but the cost of 3500 yuan/mu is increased every year by arranging the sunshade net, the economic benefit of passion fruit (1-1.5 ten thousand yuan per mu) is avoided, and compared with the single-action sedum plumbizincicola-covered sunshade net treatment, the method has the advantages of low repair cost and high benefit. The interplanting of the passion fruit improves the survival rate of the sedum plumbizincicola, brings better economic value, ensures the income of farmers, is an efficient restoration mode for realizing 'production and restoration', and is worth popularizing in the farmland soil with medium and light cadmium pollution.
According to the results of the above examples and application examples, the method for repairing and utilizing the farmland soil polluted by medium and light cadmium by interplanting the Sedum plumbizincicola and the passion fruit provided by the invention can treat and repair the soil polluted by heavy metal, can realize safe production, brings economic value and guarantees the benefits of farmers.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (10)
1. A method for utilizing interplanting of Sedum plumbizincicola and Passion fruit to repair and utilize moderate and light cadmium polluted farmland soil comprises the following steps: planting the Sedum plumbizincicola and the passion fruit in the cadmium-polluted soil to be repaired in an interplanting mode; and when the vines of the passion fruit grow to be 20-60 cm, guiding the vines to the shed frame.
2. The method according to claim 1, wherein the planting mode of the Sedum plumbizincicola comprises cutting planting; the planting mode of the passion fruit comprises transplanting planting.
3. The method according to claim 1, wherein the planting density of the Sedum plumbizincicola is 20000-25000 plants/mu; the planting density of the passion fruit is 100-120 plants/mu.
4. The method of claim 1, wherein the canopy frame comprises a canopy surface parallel to the ground, the canopy surface is mesh-shaped, and the height of the canopy frame is 160-200 cm.
5. The method of claim 4, wherein the deck is covered with a nylon mesh.
6. The method according to claim 1, wherein the interplanting mode is as follows: interplanting passion fruit and Sedum plumbizincicola, wherein the row spacing of the Sedum plumbizincicola is 15-20 cm, the plant spacing is 15-20 cm, the row spacing of the passion fruit is 280-300 cm, and the plant spacing is 200-250 cm.
7. The method according to claim 1, wherein the planting time of the Sedum plumbizincicola is 2-4 months; the planting time of the passion fruit is 1-3 months.
8. The method according to claim 1, wherein the Sedum plumbizincicola is mown every year, and the frequency of the mown is 1-3 times every year.
9. The method according to claim 1, wherein the compound fertilizer is applied at 600-800 kg/hm per year after the planting of the Sedum plumbizincicola and the Passion fruit2。
10. The method according to claim 1, wherein before planting, 10-20 kg of decomposed farmyard manure and 0.5kg of calcium magnesium phosphate fertilizer are applied to each hole of the passion fruit; when planting, 2-3 kg/mu of Xiaobaobao is applied; in the growing period, 5-7 kg of Baumeijia 1# is used for drip irrigation or spray application for each mu, and the application is carried out once in 7-10 days; in the blooming period, 5-7 kg of Baumei No. 2 is used for each mu, or 3-5 kg of Baumei No. 0 and 2-3 kg of Baumei No. 2 are used for drip irrigation or spray application, and the application is carried out once in 7-10 days; in the harvesting period, 5-7 kg of Meijia 2# is used for drip irrigation or spray application in each mu, the application is carried out once in 7-10 days, and 3-5 kg of Meidu-sugar alcohol calcium boron is applied once in each mu.
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| US20150101247A1 (en) * | 2013-10-12 | 2015-04-16 | Nankai University | Method for remediating soil with single or combined contamination of Cd and Pb by hyperaccumulator Emilia sonchifolia L. |
| CN106576845A (en) * | 2016-12-19 | 2017-04-26 | 罗城仫佬族自治县金陆地种养农民专业合作社 | Snake fruit and passion fruit intercropping method |
| CN108817079A (en) * | 2018-08-10 | 2018-11-16 | 湖南永清环保研究院有限责任公司 | A method of utilizing S.plumbizincicola-Snakegourd Fruit remediating heavy metal cadmium pollution soil |
| CN109047308A (en) * | 2018-08-10 | 2018-12-21 | 湖南永清环保研究院有限责任公司 | A kind of restorative procedure of cadmium pollution soil |
| WO2020000373A1 (en) * | 2018-06-29 | 2020-01-02 | 清华大学 | Safe using method of cadmium pollution farmland based on multifunctional crop sweet sorghum |
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- 2020-10-29 CN CN202011177957.5A patent/CN112404124A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150101247A1 (en) * | 2013-10-12 | 2015-04-16 | Nankai University | Method for remediating soil with single or combined contamination of Cd and Pb by hyperaccumulator Emilia sonchifolia L. |
| CN106576845A (en) * | 2016-12-19 | 2017-04-26 | 罗城仫佬族自治县金陆地种养农民专业合作社 | Snake fruit and passion fruit intercropping method |
| WO2020000373A1 (en) * | 2018-06-29 | 2020-01-02 | 清华大学 | Safe using method of cadmium pollution farmland based on multifunctional crop sweet sorghum |
| CN108817079A (en) * | 2018-08-10 | 2018-11-16 | 湖南永清环保研究院有限责任公司 | A method of utilizing S.plumbizincicola-Snakegourd Fruit remediating heavy metal cadmium pollution soil |
| CN109047308A (en) * | 2018-08-10 | 2018-12-21 | 湖南永清环保研究院有限责任公司 | A kind of restorative procedure of cadmium pollution soil |
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