A conditioner for improving heavy metal polluted farmland soil and its preparation method
A conditioner and heavy metal technology, applied in soil conditioning materials, chemical instruments and methods, agriculture, etc., can solve the problems of re-release of heavy metal ions, reduce the effectiveness of heavy metals, and crop toxicity, so as to increase the pH value and improve the quality of cultivated soil , enhance the effect of permeability
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Embodiment 1
[0033] Embodiment 1: a kind of conditioner of improving heavy metal polluted farmland soil, it is made of following four kinds of raw materials of weight percent:
[0034]
[0035] A conditioner for improving farmland soil polluted by heavy metals, the steps of which are: uniformly mixing raw lime, calcium magnesium phosphate fertilizer, zeolite and sepiolite in proportion to obtain a product, which is a farmland soil conditioner for reducing heavy metal pollution in farmland .
Embodiment 2- Embodiment 10
[0036] Embodiment 2-embodiment 10: a kind of conditioner of improving heavy metal polluted farmland soil, it is made of following four kinds of raw materials of weight percent:
[0037] Example
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10
quicklime
40%
40%
45%
45%
50%
55%
55%
60%
60%
calcium magnesium phosphate fertilizer
30%
25%
25%
30%
20%
15%
15%
15%
15%
Zeolite
10%
20%
15%
10%
20%
25%
20%
20%
15%
meerschaum
20%
15%
15%
15%
10%
5%
10%
5%
10%
[0038] Its preparation steps are identical with embodiment 1.
[0039] The pilot test of the above-mentioned improved heavy metal polluted farmland soil conditioner is as follows:
[0040] During 2014, field pilot tests were carried out in Lukou Town, Changsha County, Hunan Province and Huangjin Township, Wangcheng District. Both of the above-mentioned places are pilot projects for rem...
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