Potatoes are a kind of vegetable that many people like. Spring is the best time to grow potatoes. Don't miss it. How should you plant potatoes in spring?
First, the selection of improved varieties of potatoes is an important part of high-yield cultivation of potatoes.
Second, the potato diced germination 20 days before sowing, the time began to germination in early March. When the potato is cut, each block has at least one bud. 10-15 pieces / kg is appropriate. After cutting, the water soaking seeds are sterilized and disinfected with a small ash dry mix or carbendazim powder 1:200 times. After the seed is dried, the seedbed is germinated. There are two methods: one is to use the sand to germination in the corner of the room above 15 °C, and the other is to dig in the east and west. The pit is germinated, the depth of the pit is about 25 cm, and one layer of sand is layered, and the third layer is suitable. Then, the arch is covered with a film, and the straw is insulated at night. The above two methods should be sprayed 1-2 times during germination to prevent drying. When the bud grows to a length of 0.5-1.0 cm, seeding begins.
Third, select the land to see the land lyrics before the underground planting, if the grievances are not good, you can consider the irrigation ditch, the rumor should be 7-10 days before the next planting. Potato planting is generally double-ditch colonization. When ditching, a large row of 50 cm and a small row of 40 cm can be used. Potato stems need to loosen fertile soil.
4. When sowing the cover film, there are two ways to put the seed into the ditch: First, the seed buds face downwards. The potato roots grown by this method are long and strong, but the potatoes are small but the blocks are large, but the seedlings are 2-3. The other method is that the buds are facing upwards. 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 next planting, take the soil from both sides of the big row and cover the space of the potato ditch and the small row, and add the micro-film cover to compact.
5. After the emergence of potatoes and the management of the seedlings, after clearing, about 20 days after sowing, there will be Miaolu soil. At this time, the micro-film can be smashed and blown at the seedlings to prevent steaming. When the seedling grows to a height of 10 cm, the membrane around the seedling is pressed with soil to keep the water moist. Potatoes should not be watered in the early stage of growth, and should be poured after the flowers are seen. If there is no rain in the drought, watering can be done every 10 days. Generally, it can be matured by pouring water 2-3 times, and watering is stopped 10 days before harvesting. Insect pests such as mites or thrips.
Sixth, scientific fertilization of potatoes in the whole growth period should master the principle of "pre-attack, preservation, and tail control". When the seedlings are unearthed 80%, reapply a quick-acting seedling fertilizer, and start spraying the fruit in the potato seedling stage. The nutrient transport conduit of the underground fruit is thickened, the fruit fruit is expanded and expanded, the fruit surface is smooth, the fruit shape is strong, and the quality is high and the yield is high. Potatoes prefer to apply farmyard manure, which is suitable for 4000-5000 kg per mu. At the same time, nitrogen, phosphorus and potassium should be used together when applying chemical fertilizer properly. Potatoes require a large amount of potassium, and the scientific and reasonable ratio of nitrogen, phosphorus and potassium fertilizer is 1.85:1:2.1. Potatoes like to absorb ammonium nitrogen and absorb more sulfur.
VII. Pest Control In the middle and late stages of the potato, there are mainly diseases such as late blight, downy mildew and bacterial wilt. In the early stage of the disease, spray with a new high-fat film of methicillin 500 times liquid + new high-fat film on the dry dew. Blight disease should be removed from the whole plant and concentrated incineration treatment. It is also necessary to apply lime in the diseased and surrounding areas or root disinfection with 0.5% formalin solution, and then spray the agricultural streptomycin 2000 times solution + new high fat film for prevention and treatment. Prevent the spread of disease.
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