Seven measures for planting potatoes in spring
Choose good breeds
The selection of improved seeds is an important part of high-yield cultivation of potatoes.
Cut into pieces for germination
The germination began in about early March. After cutting, use small ash dry mix or carbendazim powder 1:200 times to sterilize the seed soaking in water. After the seed blocks are dried, the seedbed will start to accelerate the germination. One is to accelerate the germination with sand in the corner of the room above 15℃, and one layer of sand is one layer of the seed blocks; the other is to dig a hole in the east-west direction of the outdoor ventilated and sunny place to accelerate the germination. About 25 centimeters, one layer of sand and one layer of seed blocks, 3 layers are appropriate, and then covered with arch shed film, and covered with straw curtains at night for heat preservation. When the buds grow to 0.5-1.0 cm in length, start seeding.
Site preparation
Look at the soil moisture before planting. If the soil moisture is not good, consider irrigating the soil to create soil moisture. Potatoes are generally planted in double ditch. When ditching, use 50 cm for large rows and 40 cm for small rows.
Seeding cover film
When sowing, there are two ways to put the seed blocks into the ditch: one is the seed buds face down, and the potato roots grow strong, the potatoes are few but the pieces are big, and the seedlings are 2-3 days late; the second is the seed buds face up. , The potato roots grown by this method are relatively short, the potatoes are small but many, and the seedlings are 2-3 days earlier. After the planting is finished, take soil from both sides of the big row to cover the space of the potato ditch and the small row, and add a micro-membrane cover to firmly press.
Emergence and air release and seedling management
About 20 days after sowing, the seedlings will be exposed in the soil. At this time, the micro-film can be pierced at the place where the seedlings are washed to prevent steaming of the seedlings. When the seedlings grow to a height of 10 cm, press the membrane around the seedlings with soil. Potatoes are not suitable for watering in the early stage of growth, and water after they see flowers. Watering can be done every 10 days in drought and no rain, and watering should be stopped 10 days before harvest.
Scientific fertilization
When 80% of the seedlings are unearthed, reapply a quick-acting seedling fertilizer. Spray Diguozhuangdi Ling at the potato seedling stage to make the underground fruit nutrient transport tube thicker, improve the fruit swelling vitality, smooth fruit surface, strong fruit shape, and high-quality high yield. Potatoes like to use farmyard manure, 4000-5000 kilograms per acre is appropriate.
Pest control
In the early stage of disease such as late blight, downy mildew, and bacterial wilt, use mancozeb 500 times solution + new high-lipid film to spray for prevention and control when the dew is dry on a sunny day. Sprinkle lime or disinfect the roots with 0.5% formalin solution in and around the diseased caves, and then spray 2000 times of agricultural streptomycin + new high-fat film for prevention and treatment.
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