1, timely early sowing, reasonable dense planting is the basis for stable production and high yield of corn. Timely early sowing: When the soil ploughing layer 5 to 10 cm, when asked to stabilize at 10 °C sowing is appropriate. It is suggested that deep ditching, shallow earth cover, and heavy repression should be adopted. 2. Proper and close planting: Large spike and thin-leaved corn is generally suitable for retaining 2 800 to 3 000 (ha 4 000 to 45 000 plants) per 667 m 2 . The density of corn is generally 35,000 to 4,000 seedlings per hectare (667,000 to 60,000) per 667 square meters, and the average hectare is 37.5 kg. 3. Apply base fertilizer, timely dressing is the key to stable production and high yield. In the field of sowing money or sowing, one-time application of phosphorus, potassium, zinc fertilizer and some nitrogen fertilizer as a base fertilizer, and the remaining nitrogen fertilizer as topdressing. Basic fertilizer or seed fertilizer should be applied deep, usually 10 to 15 centimeters. To implement soil testing and formulating fertilization. 4. Strengthening field management in key periods is a condition for stable production and high production. In the seedling stage 3 to 4 leaves and time seedlings, 4 to 6 leaves in a timely manner. Found that the lack of severe seedlings must promptly make up the seedlings. In the jointing period, the top-dressing fertilizer should be top-dressed in time, and timely weeding and weeding should be adopted to prevent late lodging. As far as possible to do three shovels and four rakes (for 667 square meters of fertilizer required 25 to 35 kilograms of urea, or ammonium bicarbonate 50 to 80 kilograms). The big horn tone is the key period for corn growth. If drought is encountered, it should be filled with water in time to prevent “card neck drynessâ€. Cultivated topdressing nitrogen fertilizer. In the flowering stage of the tassel, the ear is silky and it is most sensitive to moisture. If drought is encountered, it should be timely watered. In the late harvest period of corn maturity, standing stalks, molting, promote precipitation, improve self-care maturity.
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What technical measures should be taken for stable and high-yield corn
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