A method of increasing the ability of chicory to remove cadmium from heavy metal polluted soil by using fertilization and mowing technology
A technology of polluted soil and heavy metals, applied in the field of phytoremediation, can solve the problems of the small amount of heavy metals absorbed and accumulated, the comprehensive effect of practical application is not large, and the biomass of the aboveground parts is low, so as to achieve large biomass, low management costs, developed effect
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[0016] Example 1 Soil remediation test in polluted mining area
[0017] The test site is farmland polluted by heavy metals in Chenzhou Mining Area, Hunan Province. The concentration of heavy metal cadmium in the farmland soil is 1.44mg / kg, of which the effective cadmium content is 0.73mg / kg.
[0018] The specific method is: sowing chicory in the field in the heavy metal complex pollution area in late April, and the test variety is General Chicory. Select suitable land with deep loose soil, sow seeds, carry out conventional arable land and fertilization, sow chicory in polluted soil, take antifreeze measures at seedling stage, follow-up management of diseases and insect pests, and field moisture management, and topdress once during the growth period , It can be cut 4-6 times in spring and summer every year, and topdressing fertilizer is applied once after each cut. At the same time, intertillage and weeding work must be done well. Among them, topdressing fertilizer has two tre...
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