1. Black peanut sowing time and method:

Black peanut is sown in spring around April 15th. After sowing, sow the seeds on the border covered with mulch, planting two rows in each border, planting in wide and narrow rows, with narrow rows of 30cm and wide rows of 50cm. Use a hole-fixing device to drill holes and set holes at a distance of 17cm. Sow seeds manually, sowing 2 seeds per hole on demand, and plant 9,000 holes per acre. Immediately after sowing, use moist fine soil on the hole and press it into a small mound. The height and width of the mound are about 5cm each to prevent air leakage and moisture loss after covering.

2. Black peanut field management:

1. Check seedlings and replant:

Due to insufficient seed quality and soil moisture, improper soil preparation and fertilization, pests and diseases may occur Unfavorable climatic and environmental conditions such as rain, waterlogging, and low temperature can cause the death of seed buds and the lack of seedlings. Therefore, check the seedlings in a timely manner 10 to 15 days after sowing the peanut seedlings. If any seedlings are found to be missing, they should be germinated and replanted promptly to ensure full seedlings.

2. Punch holes and break the film:

After the mulched peanuts emerge, they should be drilled and broken in time to release the seedlings. When releasing the seedlings, you should master the principle of "let the green seedlings do not release the seedlings, and release them on a good day" According to the "seedling" principle, when the first true leaf appears, turns green and unfolds, before 10 a.m. and after 4 p.m., break the film, punch a hole of about 5cm, and gently peel off the leaves with your hands. Then seal the soil to compact the mulch, otherwise the seedlings will be burned.

3. Disease and insect pest control:

When aphids appear in late May or early June, use 25% Acta 6g-10g per acre, or 44% polyphylla Spray 30ml-60ml of clear emulsified oil with 30kg of water; in mid-June, use 2kg of 10% per acre to quickly kill groundworms, mix with 10kg of fine soil and spread in ridges around peanut roots to control stink bugs, wireworms, etc.; in early July, use 40% per acre to kill groundworms. Coning 80ml, add 30kg of water and spray 1-2 times to prevent leaf spot and rust.

4. Water early:

If you encounter drought during the flower needle stage, pod setting stage, and pod full stage, you must water in time to resist drought. It is best to use sprinkler irrigation for drought-resistant watering. Sprinkler irrigation should be appropriately extended and the amount of water sprayed should be larger so that there is an appropriate amount of water in the ditch to facilitate moisture from the ditch to the ridge, and to prevent heavy water from overflowing. Ridge surface. After watering, when it is dry and wet, plow the furrow once to prevent soil compaction in the furrow. Ensure that the fruit needles are inserted into the soil in time and the pods are swollen and firm. However, in case of waterlogging, drain water in time to prevent fruit rot.

5. Control vigorous growth:

From the time the needles are planted on mulched peanuts to the pod-setting stage, with the rainfall during the heavy rain period, that is, the arrival of high temperature and humidity, it is easy to cause vigorous growth. In order to control the vigorous growth, about 20g of Zhuangbaoan should be used per acre and 40kg of water should be sprayed on the leaves 1 to 2 times from the late needle setting stage to the early pod setting stage of peanuts, or when the main stem height is 35cm-40cm. It not only controls vigorous growth, but also controls gibberellin biosynthesis in peanut plants, reducing cell division and elongation, which inhibits the vegetative growth of aboveground parts, dwarfs plants and thickens leaves. It also promotes root vitality and improves photosynthetic products. operation and distribution. Therefore, it regulates physiological and biochemical functions, increases dry matter accumulation, improves quality, and increases yield.

6. To prevent premature aging:

About 40 days before peanut harvest, use 1.5%-2% urea plus 250g-300g of potassium dihydrogen phosphate per mu, and add water to the water. 50kg, spray 2 to 3 times on the foliage, once every 7 days to 10 days. The spray should be carried out after 4 pm. It can extend the functional period of stems and leaves and photosynthesis, enhance root absorption capacity, promote dry matter accumulation, and increase yield.