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Experts suggest peanut production
As the spring peanut planting season approaches, both wheat and summer peanuts are entering their preparation phase. On March 27, the Ministry of Agriculture Oil Crops Experts Guidance Group and the National Agricultural Technology Promotion Center released this year's technical guidelines for peanut production. These recommendations aim to ensure efficient and sustainable farming practices across different regions.
In line with local conditions, farmers in the northern spring peanut areas are advised to choose mid-to-late maturing large-seeded varieties that have a growth period of 130 to 140 days. For wheat-covered peanuts, medium-early maturing large-seeded varieties with a growth period of 120 to 130 days are recommended. In general, early-maturing large or small-seeded varieties with a growth cycle of 115 to 125 days are preferred. In southern regions, medium to medium-large seeded pearl-type varieties with a growth period of about 120 days are suggested. It is also important to select varieties that are resistant to local droughts, diseases, and pests, while aligning with market demands in terms of quality and type. In areas where mechanical harvesting is common, the suitability of the variety for machine harvesting should also be considered.
For timely sowing, spring peanuts require a daily average soil temperature of at least 15°C at 5 cm depth, while small-seeded varieties need a stable temperature above 12°C. Wheat peanuts are typically sown 15 to 20 days before wheat harvest. For summer sowing, it is best to plant when the soil is moist. Sandy soils can be sown using stalks, followed by crushing and fertilizing after emergence. In the south, spring-sown peanuts should be planted when the temperature stabilizes above 15°C or the ground temperature reaches 12°C. The ideal soil moisture content during sowing should be between 70% and 75%, meaning the soil in the tillage layer should be able to form clumps but remain loose.
Ten to fifteen days before sowing, seeds should be shelled and treated. A mixture of 30% chlorpyrifos (250 ml), 2.5% imidacloprid (50 ml), and 20 ml of chlorfenapyr per acre (15–17 kg) is recommended. Alternatively, using imidacloprid and carbendazim seed dressings can effectively control root rot, aphids, and underground pests.
For scientific fertilization, the main focus should be on applying NPK fertilizers, combining organic and inorganic sources, as well as quick-acting and slow-release types. Functional fertilizers should be used skillfully. In acidic soils, physiological alkaline calcium-containing fertilizers such as lime are recommended, while in alkaline soils, physiological acidic calcium-containing fertilizers like gypsum are suitable. Continuous use of lime nitrogen and biological bacterial fertilizers can significantly reduce soil pathogens and eggs, improving microbial balance and enhancing soil fertility.
During the seedling stage, spring and summer peanuts should not be watered excessively. Moderate drought helps develop a strong root system and improves the plant's drought resistance. If the seedlings experience drought, timely watering is essential to protect them. The mid-growth stage, which includes the flowering and pod-filling periods, is the most sensitive to water and the time of highest water demand. Drought during this period can greatly affect yield. If the leaves show signs of wilting around noon, irrigation should be done immediately. In the late growth stage, light watering is recommended to keep the soil moist and prevent premature aging and aflatoxin contamination. However, irrigation should be avoided during high temperatures to prevent fruit rot. Additionally, southern peanut fields must maintain good drainage to avoid waterlogging.