Method for reducing accumulation quantity of arsenic in crops
A crop and accumulation technology, which is applied in the field of reducing the accumulation of arsenic in crops, can solve the problems of long-term, complete or partial suspension of agricultural production activities, insignificant application effect of a single method, and a large amount of physical repair technology. Reduced migration ability, low price, environmentally friendly effect
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[0021] Example 1
[0022] The experimental soil was collected from Chaoyang District, Beijing, and passed through a 10-mesh sieve. The arsenic-contaminated soil was artificially added with Na 2 HAsO 4 ·7H 2 O is configured. The artificially configured soil arsenic pollution concentration in this example is 90.2 mg / kg. Using pot experiment, each plastic pot contains about 2kg soil, selects Chinese cabbage as the test crop, leaves 4 seedlings in each pot, and sets a blank control group for the experiment, and sets 6 replicates for each treatment group. Add kaolinite in the amount of 10g / kg and iron powder in the amount of 6g / kg in each pot of soil, mix the soil conditioner with the soil, age for 7 days, press N:P:K=0.3:0.1:0.2mg / kg Add base fertilizer to the soil and sow the seeds of Chinese cabbage to keep the soil moisture content at 30-40%. After the growth of the Chinese cabbage is normal, thin the seedlings, spray foliar fertilizer with 0.15% potassium dihydrogen phosphate. I...
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