Cultivation method of pollution-free vegetables

The invention discloses a cultivation method of pollution-free vegetables. The cultivation method comprises the following steps of preparing nutrient insecticidal particles; selecting flat group which is good in drainage, loose, fertile and sufficient in sunshine, deeply ploughing the soil for 12-20cm, applying 100-120kg of decomposed organic fertilizer per acre, exposing to the sun for 1-2 weeks, applying 25-40kg of nutrient insecticidal particles, finely tilling and forming furrows; selecting high-quality vegetable seeds, demolding and removing impurities, killing microsclerotium and hypha attached to the surfaces of the seeds by using polybacterial spray, cleaning by using clean water and carrying out seed soaking treatment; uniformly sowing the treated vegetable seeds into the flat ground, covering with a layer of plant ashes, and spraying a proper amount of animal urine and clean water; and after the vegetable seeds germinate, timely carrying out weeding, irrigation and fertilizer supplementation. The cu