Method for repairing and treating soil with cadmium pollution using flowering plant Indian marigold
A technology for cadmium-contaminated soil and polluted soil, which is applied in the field of remediation and treatment of cadmium-contaminated soil by using the flower plant Malachite, can solve the problems of incomplete research on breeding potential, small aboveground biomass, poor regional adaptability, etc., so as to improve soil degradation and Reduced productivity, rapid growth, and small engineering effort
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Embodiment 1
[0016] Example 1: Confirmation and simulation application of potted gradient cadmium hyperaccumulation plants
[0017] The potting experiment site is in the net room of Shenyang Institute of Applied Ecology, Chinese Academy of Sciences. The site is in the center of Shenyang. There are no pollution sources around the experimental site, and it is an area that is not polluted by heavy metals. The potting test soil was collected from the surface soil (0-20cm) in the pollution-free area of the Shenyang Ecological Station of the Chinese Academy of Sciences, and the soil type was meadow brown soil.
[0018] There were 8 treatments in this experiment, and each treatment was repeated 3 times. The Cd concentrations (mg / kg) added were: 0 (control, not added), 12, 24, 36, 48, 72, 96 and 150 . The Cd added in the experiment was analytically pure CdCl 2 2.5H 2 O, and apply a certain concentration of nitrogen, phosphorus, and potassium fertilizers as base fertilizer: 0.15g / kg N(CO(NH 2...
Embodiment 2
[0026] Example 2: Confirmation of field plots and remediation of cadmium-contaminated soil
[0027] The experimental site is located in the Shenyang Ecological Station of the Chinese Academy of Sciences, which is located in the center of the Lower Liaohe Plain, about 35km away from Shenyang City, and belongs to the warm temperate semi-humid continental climate. There are 3 plots in the experiment, the cadmium treatment concentrations (mg / kg) are: 0, 10, 50 respectively, and the cadmium in each plot has been added for more than one year; the area of the experimental plot is 2m 2 (L=2m, W=1m), the basic physical and chemical properties of the soil are the same as the potting soil. Select 5-8cm of seedling height, contain 4 true leaves, and grow uniformly Malachite flower seedlings and move them into the plots, plant 8 rows in each plot, 8 trees in each row, 64 trees in total. Adopt the open-air cultivation mode, according to the situation of abundance and deficiency of soil m...
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