This invention discloses a method for planting industrial chili peppers in Cd-contaminated areas, belonging to the field of
crop cultivation technology in contaminated soil. 20-40 days before planting, apply 200-300 kg of
biochar and 1000-1500 kg of well-rotted
organic fertilizer per mu (approximately 0.067 hectares), and allow the soil to mature after
tilling. Use Cd-free
nutrient soil for
seedling cultivation, and transplant when the seedlings are 35-40 days old, applying rooting and
seedling strengthening agents and antibacterial and insecticides. During the inter-cultivation period, drip apply 5-8 kg / mu of
selenium-containing water-soluble
fertilizer every 7-10 days; after a 7-day
seedling establishment period, apply seedling-promoting
fertilizer, insecticides, and herbicides; after
pruning, apply wound-healing agents and antibacterial agents; apply
virus disease control agents every 10 days; and from 30 days after
transplanting, apply balanced compound
fertilizer every 20 days. During the flowering and fruiting period, spray 1-2 kg / mu of
silicon-containing water-soluble fertilizer every 10 days; apply antibacterial and insecticides every 10 days, adjusting the type and dosage according to the pest and fungal
infestation situation. Harvest the fruit after it matures. This method uses
biochar to passivate Cd in the soil, uses
selenium fertilizer to inhibit the absorption of Cd by plants, and combines
silicon fertilizer to block the transport of Cd to the above-ground parts of the
plant. The Cd content of industrial pepper fruits is <0.08mg / kg, and the yield is >630kg / mu.