1. Reasonably determine the sowing volume Determine the mu-density based on the soil strength, species characteristics, and target yield, and calculate the sowing density based on the mu-density, seed germination rate, and 100-grain weight. General plots, flat varieties: 3000-3500 plants/mu; semi-compact varieties: 4000-4500 plants/mu; compact species: 4000-5005 plants/mu. In actual production, the number of per mu plants can be about 10% more than the above values. Proper and reasonable dense planting will help increase the yield.
2, to improve the sowing quality to promote such row spacing sowing, broadcast depth 4-5 cm. Fertilizer and fertilizer must be separated from the fertilizer. Before and after the studs staggered more than 5 cm, so as not to burn seedlings. Fertilizer with NPK fertilizer is appropriate, the amount per acre generally does not exceed 10-12.5 kg, pay attention to the amount of fertilizer should not be too large, should not use ammonium bicarbonate and other volatile nitrogen fertilizer. It is necessary to eliminate the practice of applying the fertilizers required for the life of corn with sowing once. This will result in waste. It may also result in large areas of seedlings. In the later period of childbirth, premature aging due to nutritional deficiencies will result in unnecessary loss of production. Poor seeding quality will often result in lack of seedlings, faulty ridges and irregular seedlings. The emergence of seedlings and weak seedlings at seedling stage will be mostly empty when they are mature, even if the endoccurrence is very small and the yield is less than normal. First, it is basically useless to perform partial pipetting on young and weak seedlings. It can be seen that improving the quality of sowing is very important for achieving high and stable production of corn. The corn advocates “seven-point and three-in-one†management. For this reason, corn must be sown with strict quality control, so as to achieve “miao-quan, Miao-qi, Miao- uniform, and Miao-zhuang†and try not to make up the seedlings without transplanting.
3. Confirmation of sowing date The growth and development time of summer corn are generally relatively short, and the output potential is limited. Therefore, it is the key to realizing the high yield of summer maize when the conditions of wheat are allowed to harvest. After the wheat is harvested, the summer corn should be sown early, so that the “early†supplement “short†can be achieved, and “zero agricultural consumption†can be achieved as much as possible. That is, the wheat is harvested on the same day and the summer corn is sown on the same day. Generally one day early sowing, can produce 3.5-12.5 kg per mu.
4. Watering after sowing To achieve early harvest during harvesting, generally the wheat is sown and then watered after it is harvested. Since watering time and water amount are not easily grasped, it is not advisable to flood the headwaters, especially when the land is long. Mengtou water. If it is necessary to fill the headwaters due to the limitation of the irrigation conditions, it is necessary to pay attention to grasping the seeds and not to pour them, and the amount of water shall be small. When sowing is generally required to meet the emergence of sensation, watering after emergence, the amount of water to not flood the corn heart is appropriate.
5. Do a good job of three kills to ensure the weeding effect. During the growth period of summer maize, high temperature and rainy season occur, and weeds can be excavated at any time. Once prevention and control are lost, it is easy to form grassland. Before maize emerges, it is necessary to adopt a "three kills" technique, and use spraying herbicides such as the mixture of chlorotharone and acetochlor plus paraquat to spray at the same time, which can simultaneously seal the soil, kill the grass, and control the planthoppers. And locust effect. It should be noted that extinction herbicides are no longer available on plots that have already emerged, and it is recommended that farmers prefer to use corn to treat the weeds with stems and leaves after the weeds have emerged.
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