A soil heavy metal passivator
A heavy metal passivator and soil technology, applied in soil conditioning materials, chemical instruments and methods, agricultural machinery and tools, etc., can solve the problems of limited natural clay mineral repair ability, difficulty in large-scale promotion and application, and practical impact. Achieve the effect of reducing bioavailability and migration, benefiting growth, ensuring yield and quality
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Embodiment 1
[0022] The pH value of the tested soil was 7.20, and the total Cd content was 1.42 mg / kg, which belonged to cadmium-contaminated soil. After sowing and raising seedlings of pak choy, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm to select seedlings with consistent growth for transplanting, plant 10 pak choi in each pot, and each pot of pak choy is one repetition , each group is repeated 3 times, the first group does not take measures, the second group adopts the soil heavy metal deactivator provided by the prior art, and the third group adopts the soil heavy metal deactivator of the present invention. After 30 days of growth, the shoots of the three groups of Chinese cabbage were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 1. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method fo...
Embodiment 2
[0027] The pH value of the tested soil was 7.20, and the total Cd content was 1.42 mg / kg, which belonged to cadmium-contaminated soil. After sowing and raising seedlings of rapeseed, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm, select seedlings with consistent growth for transplanting, and plant 10 rapeseeds in each pot, and each pot of rapeseed is a repetition, and each group Repeat 3 times, the first group does not take measures, the second group adopts the soil heavy metal passivator provided by the prior art, and the third group adopts the soil heavy metal passivator of the present invention. After 30 days of growth, the shoots of the three groups of rapeseed were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 2. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method for in-situ ...
Embodiment 3
[0032]The pH value of the tested soil was 7.20, and the total Cd content was 1.42mg / kg, which belonged to cadmium-contaminated soil. After sowing and seedling lettuce, use 9 rectangular white plastic pots with a length*width*height of 33*25*15cm, select seedlings with consistent growth for transplanting, plant 10 lettuces in each pot, and lettuce in each pot is one repetition, each group Repeat 3 times, the first group does not take measures, the second group adopts the soil heavy metal passivator provided by the prior art, and the third group adopts the soil heavy metal passivator of the present invention. After 30 days of growth, the shoots of the three groups of lettuce were taken to measure and calculate the yield per mu, protein, soluble solids, Vc content and Cd content. The results are shown in Table 3. The soil heavy metal passivator provided by the prior art refers to the technology provided by the patent CN200910070713.4 (a method for in-situ passivation repairing he...
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