A method of increasing the ability of tobacco to remove soil cadmium by using fertilization and mowing technology
A tobacco and soil technology, applied in the field of phytoremediation, can solve the problems of small comprehensive effect of practical application, less total amount of absorbed and accumulated heavy metals, and low biomass in the aboveground parts, and achieves low management costs, large biomass, and developed aboveground parts. Effect
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[0015] Example 1 Soil remediation test in cadmium polluted area
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[0017] The distribution of cadmium in tobacco plants was investigated using test pots with a diameter of 31 cm and a height of 28 cm. Each pot was filled with 15 kg of soil. The soil was collected from a tobacco field in eastern Hunan. The heavy metal cadmium content in the soil was 0.587 mg / kg and the pH value was 4.77. . In March 2014, tobacco seedlings of Yunyan 87, Yunyan 97, K326, and Xiang 3 were transplanted into test pots, with 1 plant in each pot, and 3 replicates for each variety. The same routine management was adopted in each test pot (using local customary management). Harvested after planting 60 days (i.e. maturity stage), and the tobacco leaves were sampled in sections, taking 1 to 5 leaves as the lower leaves, 6 to 10 leaves as the middle leaves, and 11 to 15 leaves as the upper leaves, and determined the concentration of heavy metals in 4 different tobacco leaves. The conte...
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