Hybrid corn cultivation
In recent decades, with the widespread use of heterosis in corn production, corn production has undergone significant changes. Especially the hybrid corn (waxy corn), it has a wide range of adaptability, strong resistance, high yield performance, large spikes and large, sweet taste, is a petite in many hybrid corn, deeply loved by the general public. Hybrid corn should pay attention to the following points in production. 1, check seedlings make up seedlings: corn's single plant productivity is high, if lack of seedlings, yield will be greatly affected. Corn seedlings should be checked immediately after soil breakage. If they are found to have uneven growth, lack of nests, and broken lines, they should promptly make up the seedlings, and immediately apply water and moisturize them after filling to ensure survival. 2, seedlings Dingmiao: In order to make the corn plant growth evenly distributed, improve ventilation and light conditions, enhance photosynthesis, reduce pests and diseases, in the corn seedlings grow to 6-7 leaves, when the seedlings, Dingmiao, leaving only 1 per hole Strains. 3, a reasonable fertilization: fertilization in principle should be done: at the end of fertility, nutrient all, quickly and timely fertilizer. When 4-5 leaves are to be applied, Miao Fei should be applied in a timely manner (imported compound fertilizer per mu, and each urea should be diluted with 10 kg of water to replenish the water) to strengthen the seedlings; when 8-9 leaves (that is, the beginning of jointing stage), strong stalks should be applied. (5 kg of urea per acre or 20 kg of fecal water applied per acre) to promote ploughing of glutinous shoots and large grains; when 11-12 leaves are applied, panicle fertilizer is promoted to promote large panicles; in the budding stage, urea per mu 10 Kilograms were poured into water. 4, scientific management of water: after sowing points to keep moist, to ensure the emergence of sound. After the emergence of the seedlings, the underlying soil should be kept moist, especially during the tasseling or critical period of water requirement. If there is difficulty in lack of water or water, and pollen is difficult, there is little pollen and the vigor is poor. Therefore, sufficient water should be supplied in time to ensure the necessary water for normal corn growth. 5. Cultivated weeding: Seedlings are sensitive to external conditions. In order to cultivate strong seedlings, cultivators should be carried out as early as possible to achieve shallow seedlings, deep internodes (rows), and loose soil filling seed holes with a cultivator depth of 5-6 cm. When the seedlings grow to 8-9 leaves, they will be used to cultivate soil, promote the development of the root system and resist lodging, and the soil should be 6-7 cm high. 6, pest and disease control: seedlings are mainly rodents and corn stubble. Anti-rats can use rodenticides or rodent traps to eradicate rats, reduce the harm, and ensure that the seedlings are full. Corn borer can be sprayed with 90% trichlorfon 500 times. In the late tasseling period, a small amount of aphids, anthracnose, or large spot disease can cause damage. It is necessary to use drugs such as trichlorfon and dichlorvos in time for spraying. 7, timely harvest: to ensure the quality of corn, should be timely harvest. When the corn plants are slightly white and the fruit must be black, it should be harvested in time.