This period is the key period for determining the number of spikes, grain number per panicle, and grain weight. At this time, the main crop is fertilizer (10 kg urea), drought resistance and drainage, and artificial pollination. When heading, flowering and grouting should be timely irrigation, to keep the soil moist, to meet the plant's water requirements, but irrigation should not be flooded to irrigation horse water is better. Pay attention to the drainage on rainy days so as to avoid the accumulation of water and oxygen. In the flowering period of maize, in case of bad weather, artificial pollination should be performed 2-3 times, usually at 9-11 am on sunny days, which can reduce the lack of grain and baldness. Fingerprint Scanner,Biometric Fingerprint,Bluetooth Fingerprint Scanner,Wireless Fingerprint Scanner Chongqing Huifan Technology Co., Ltd , https://www.huifantech.com