The first measure: In the summer, the flooded water is sterilized. In the summer, the vegetable field is deeper than 20 cm, and the flooded water is kept 5 cm long. The surface of the water is covered with plastic film or quick lime. After 10 days, the film was opened, drained, and planted after the whitening plow.
The second measure: disperse ammonium bicarbonate, that is, before the harvest of summer leek in the summer, 30-50 kilograms of ammonium per acre is used to cover the plastic film, and the ammonia is decomposed by ammonium bicarbonate to eliminate pests and diseases. Generally, the pest is removed after 7 days. Membrane, plowing and sowing again.
Surgical Tape,Adhesive Flexible Tape,Waterproof Surgical Tape,Breathable Surgicaltape
Zhende Medical Co.,Ltd , https://www.zdmedicalproducts.com