Method for restoring farmland soil polluted by medium-low-concentration mercury through crop rotation of cotton and Indian mustard
A technology of Indian mustard and mercury pollution, applied in the field of low-concentration mercury-contaminated farmland soil, can solve the problems of difficult migration of mercury, hinder mercury migration, etc., and achieve the effect of facilitating absorption, promoting absorption, and promoting transfer
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[0033] Example 1
[0034] 1. Restoration plants: Cotton and Indian mustard are selected as restoration plants, and the planting method is cotton-Indian mustard rotation.
[0035] 2. Repair object: select an area of Zhejiang with an average total mercury content of 0.68mg·kg -1 , And farmland soil with a soil pH of 6.3 is used as the restoration object.
[0036] 3. Preparation of reagents: use indole butyric acid and naphthalene acetic acid to prepare 20 mg·L -1 The mixed solution of indolebutyric acid and naphthalene acetic acid, the configuration concentration is 25, 30, 35mg·L -1 的Gibberellin solution.
[0037] 4. Test methods and results:
[0038] (1) Set up test plots on mercury-contaminated farmland, each plot is 16m 2 , 3 replicates per treatment, cotton planting density is 50 plants per plot, and Indian mustard transplanting density is 150 plants per plot.
[0039] (2) In early June, before planting cotton, sprinkle 0.075kg·m -2 Turn the soil with the fulvic acid to a depth of a...
Example Embodiment
[0058] Example 2
[0059] 1. Restoration plants: Cotton and Indian mustard are selected as restoration plants, and the planting method is cotton-Indian mustard rotation.
[0060] 2. Repair object: select an area of Zhejiang with an average total mercury content of 0.68mg·kg -1 , And farmland soil with a soil pH of 6.3 is used as the restoration object.
[0061] 3. Preparation of reagents: use indole butyric acid and naphthalene acetic acid to prepare the concentrations of 8, 20, 85 mg·L -1 The mixed solution of indolebutyric acid and naphthalene acetic acid, the configuration concentration is 25, 30, 35mg·L -1 的Gibberellin solution.
[0062] 4. Test methods and results:
[0063] (1) Set up test plots on mercury-contaminated farmland, each plot is 16m 2 , 3 replicates per treatment, cotton planting density is 50 plants per plot, and Indian mustard transplanting density is 150 plants per plot.
[0064] (2) In early June, before planting cotton, sprinkle 0.075kg·m -2 Turn the soil with th...
Example Embodiment
[0092] Example 3
[0093] 1. Restoration plants: Cotton and Indian mustard are selected as restoration plants, and the planting method is cotton-Indian mustard rotation.
[0094] 2. Repair object: select an area of Zhejiang with an average total mercury content of 0.68mg·kg -1 , And farmland soil with a soil pH of 6.3 is used as the restoration object.
[0095] 3. Preparation of reagents: use indole butyric acid and naphthalene acetic acid to prepare 20 mg·L -1 The mixed solution of indolebutyric acid and naphthalene acetic acid, the configuration concentration is 25, 30, 35mg·L -1 的Gibberellin solution.
[0096] 4. Test method
[0097] (1) Set up test plots on mercury-contaminated farmland, each plot is 16m 2 , 3 replicates per treatment, cotton planting density is 50 plants per plot, and Indian mustard transplanting density is 150 plants per plot.
[0098] (2) In early June, one day before planting cotton, sprinkle 0.075kg·m -2 Turn the soil with the fulvic acid to a depth of about 1...
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