Potato seedlings are planted into the shed every year in early April. When the potato seedlings have grown to 2 inches in early May, they are transplanted to the field. Early potatoes can be harvested half a month before the end of June. The specific management techniques are as follows:
First, dicing germination. 20 days before sowing, the time began to germination in about the beginning of March. When the potato is cut, each block has at least one bud. 10 to 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 sprinkled 1 or 2 times during germination to prevent drying. When the bud grows to a length of 0.5 to 1.0 cm, seeding is started.
Second, the land preparation trench. Look at the land grievances before the next species. If the grievances are not good, you can consider the irrigation and gulping, and the rumors should be 7 to 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.
Third, sowing the cover film. The spring equinox to Qingming is the best period. What should be specially mentioned here is that the detoxified potatoes can be broadcast early in advance, and the spring leaves are broadcasted before the spring leaves. The plant spacing can be controlled at 20 cm. Before sowing, spray with 1:10000 times of octyl sulfate to prevent underground pests. Organic fertilizer can be sprinkled directly into the ditch or when it is placed in the ground; chemical fertilizer can be placed in the ditch or sprinkled between the seeds (note that it cannot be in direct contact with the seed). When planting, there are two ways to put the seed into the ditch: First, the seed buds face down. The roots of the potatoes grown in this method are long and strong, but the potatoes are small but the blocks are large, but the seedlings are 2 to 3 days late; With the buds facing up, the potato roots grown by this method are relatively short, the potatoes are small but many, and the seedlings are 2 to 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.
Fourth, emergence of seedlings and seedling management. After the Qingming, about 20 days after sowing, there will be Miaolu soil. At this time, the micro-film can be broken and released 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 for 2 to 3 times, and watering is stopped 10 days before harvesting. Insect pests such as mites or thrips.
5. Rational fertilization. Potatoes prefer to apply farmyard manure, 4000 to 5000 kg per 666.7 square meters, and nitrogen, phosphorus and potassium should be used when appropriate fertilizer application. 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 nitrogen according to the state, and absorb more sulfur. According to the experiment, each additional 1 kg of potassium sulphate fertilizer can increase the yield of potatoes by 100-150 kg.
The above is the key point of spring potato management, for your reference, and hope to help you. Huinong School has more relevant agricultural technology knowledge, and continue to pay attention to the Huinong School to answer questions during the planting process.
Copyright Tip: Hui Nongwang platform respects and protects intellectual property rights. If you find copyright problems in the platform articles, please contact us and handle them in time.
Disclaimer: Some of the content is reproduced from other media. The purpose of the reprint is to convey more information. It does not mean that the Hui Nongwang platform agrees with its views and is responsible for its authenticity.
Small Safe,Smart Safe,Electronic Safe,Portable Safe Box
Hebei Yingbo Safe Boxes Co.,Ltd , https://www.ybsafebox.com