Recently, the rainfall in the main maize producing areas of Anhui Province has been above 50 mm, and in some areas above 100 mm, and the corn fields in some areas have caused waterlogging hazards. What field management measures should farmers take to reduce the risk of waterlogging at the seedling stage of corn? To this end, the reporter interviewed Researcher Wang Shiji, deputy director of the Corn Research Center of the Provincial Academy of Agricultural Sciences. "Maize seeds are most sensitive to waterlogging when they absorb water and swell, and the main roots start to stretch." Wang Shiji told reporters that when the soil moisture content of corn seedlings reaches 90% of the maximum water holding capacity, obvious stains will form. Within a month of summer corn planting to jointing, when the total precipitation exceeds 200 mm or the precipitation exceeds 100 mm, a waterlogging disaster will occur. Wang Shiji told reporters that the current farmers must clean up the three ditches, and make sure that the three ditches of the border ditch, waist ditch, and gutter can be matched to remove the soil in the ditch, ensure the unblocked ditch, and improve the drainage efficiency. After rainfall, the field water should be eliminated in time, and the field water should be drained to prevent "dumb flooding". When waterlogging occurs, farmers must also apply top-effect nitrogen fertilizer in time to promote corn growth. After removing the clear water in the field, spread urea between the corn rows, and the amount per mu is about 5 kg. It can also be sprayed with growth promoters such as fulvic acid to promote the growth of corn root system and improve the resistance to stress. Timely removal of field weeding is also one of the field management measures to be done. Growers can spray stalk and leaf herbicides when corn is 3-5 leaves (weeds 3-5 leaves) to remove weeds in the field and prevent grass waste after rain. The concentration of the drug solution should be diluted to prevent the concentration of the drug solution from being too high to damage the seedlings. The spraying time is best in the afternoon to prevent the high concentration of the liquid caused by the dispersing of the high-temperature water from hurting the seedlings. Spray along the rows of corn so that there is no leakage and no re-spray. After corn is flooded, due to the accumulation of water in the field, the soil and air humidity are high, and after the corn is damaged, the resistance is weak and the disease is prone to occur. Clean the leaf soil and spray with bactericides such as carbendazim, thiophanate-methyl and so on. 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 hpv Hangzhou DIAN Biotechnology Co., Ltd. , https://www.dianbiotech.com