Management of corn tasseling period is the key
After the tassel tassels, the maize begins to enter the reproductive growth stage, during which the leaf area coefficient reaches its maximum value. The spinning period is the most critical period to determine the number of grains. After entering the grain period, it is an important period to determine the grain weight and an important growth period for the formation of grain yield. This period plays a decisive role in corn yield and is also a period of frequent pests and diseases. In order to strive for high yields, field management during this period must be strengthened. Refuse drought The earliest water consumption in the ear of corn is 30% to 35% of the total water consumption in the whole life. The water consumption intensity in the tasseling period is the highest. It is the critical period of water demand for corn. Drought and water shortage will cause different degrees of yield reduction or even a complete crop failure. Affect the yield. When the relative water content of the soil is less than 70%, watering should be done in time to avoid drought-induced yield reduction. Supplementary fertilizer The ear stage is the period when corn needs the most amount of fertilizers and the intensity of fertilizers is the highest in the whole life. For defertilized corn, the grain fertilizer is generally applied from the heading to the spinning stage, mainly nitrogen fertilizer, and about 10 kg of urea per mu can promote the grain filling, improve the seed setting rate and the weight of the grain. Remove empty stalks Empty stalk plants affect the ventilation and light transmission of the field, and compete with normal plants for water and fertilizer, empty nutrients, and may spread diseases, which seriously affect corn yield, and should be removed as soon as possible. Except for the upper ears, the second and third ears of corn plants are stunted. Except for special varieties, such spikelets are generally not strong. Such "blind sticks" should also be removed to reduce the inefficient consumption of nutrients and promote The main ear is full, the bar is large and the grain is full, increasing the yield. When removing empty stalks and "blind rods", we must also take care of removing diseased plants to reduce the spread of pests and diseases. Cultivating soil Cultivation can improve soil permeability, fertilizer and water supply, promote root development, and remove weeds. Soil cultivation can increase the formation of aerial roots and enhance the lodging resistance of corn. Due to the windy autumn, it is easy to cause corn lodging. Therefore, the soil should be cultivated in time after corn top dressing to prevent lodging. Pest control Common diseases and insect pests in the later stage of corn include stem rot, leaf spot disease, smut, corn borer, armyworm, aphids, etc., and should be actively controlled. For Mythimna separata, it can be sprayed with avermectin, Bacillus thuringiensis, etc. In severe cases, the interval is 7 to 10 days, and the spray is continuous 2 to 3 times. For corn leaf spot, spray with 5% chlorothalonil or 75% mancozeb, 70% thiophanate-methyl, etc. Spraying can be combined with spraying potassium dihydrogen phosphate to prevent premature aging. Late harvest Promoting proper late harvest technology can ensure that corn has sufficient filling time, which is an effective measure to increase grain weight, increase production and income. The standard of corn maturity is that the bract leaves turn white, dry and loose, the milk line disappears, the grain is shiny, and the grain weight is the highest at this time. This technology does not need to increase any cost input. Tests have shown that every 1 day of delay in harvesting will increase the average weight of thousand kernels by about 3 grams. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Guangzhou Zhongzhinan Supply Chain Co.,Ltd. , https://www.zhongzhinanlighting.com