How much does it cost to plant one mu of Platycodon grandiflorus, and how much can you earn?

Planting Platycodon grandiflorus is just like growing other crops: it does not require much technical skill, and pests and diseases are easy to cure. Platycodon grandiflorus can be sown in spring or summer, and its main growing period lasts one year.

Planting one mu of Platycodon grandiflorus requires an input of 10,000 jin of barnyard manure or 100 jin of compound fertilizer, valued at 120 yuan; 2 kilograms of seed, priced at 160 yuan; and about 300 yuan in labor, for a total of 580 yuan. The average annual yield is more than 1,000 kilograms, with high yields reaching 1,500 kilograms. Calculated at an export-grade rate of 70%, that is 700 kilograms; at the current purchase price of 4 yuan/kilogram, the income per mu is 2,800 yuan. Add 300 kilograms of substandard roots, processed into medicinal material (drying ratio 3:1) to make 100 kilograms; at the current purchase price of 10 yuan/kilogram, that comes to 1,000 yuan. There is also seed income: one mu produces 20 kilograms of seed in the same year, and at 40 yuan/kilogram that is another 800 yuan. Total income per mu is 4,600 yuan. After deducting costs, the income per mu is at least more than 3,600 yuan.