Potato mulching technique
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After planting the seed potatoes, flatten the ridge with flat boring to facilitate weeding and filming. 667 square meters with herbicide Dole 80 ml water 40 kg sprayed on the ridge surface, herbicide can not be sprayed once, should leave a small part, etc. after the cover film spray ridge ditch. To prevent long grass, 667 square meters requires 90cm wide micro-film 4kg. When covering the membrane, be sure to close both sides and the ridge head with wet soil, and use a wet line to seal a horizontal line every 6 to 7 meters on the ridge surface to prevent the wind from scratching the plastic film and affecting the heat preservation effect. After the emergence of seed potatoes, first use a knife to break the membrane 5 cm wide, break the membrane to consolidate the seedlings, must not lead out the potato seedlings, otherwise it is vulnerable to frost. Generally 10 to 15 days after hardening the seedlings, the young seedlings should be drawn out by hand, and then the membrane opening should be sealed with wet soil. When a drought occurs in March, it should be watered in time. In early March, 667 square meters was sprayed with 30 grams of paclobutrazol to spray 40 kilograms of water to prevent madness. If pests and diseases occur, they should be prevented and treated in time.