What factors will affect the yield of corn?

What factors affect corn yield? There are several reasons that will affect the yield of corn: First, the selection of seeds is not careful. To go to the regular seed management department, select the improved varieties suitable for planting in this region is the premise of realizing high yield of maize. Second, the density is too high. In order to achieve the goal of high yield, some farmers blindly increase the planting density, resulting in too high plant density, resulting in poor growth and development of maize plants, high empty stalk rate, female ear bald tip serious, resulting in different degrees of lodging, resulting in yield reduction. Rational close planting is an important link to realize high yield of summer maize. Different close planting range should be selected according to different variety characteristics. Even if it is the density of the same variety, it should be controlled flexibly according to soil fertility and sowing date. The soil fertility with high fertility or late sowing should be dense, and the soil fertility plot with middle and low fertility or early sowing should be sparse. Third, fertilization is unscientific. The phenomenon of heavy nitrogen fertilizer, light phosphorus fertilizer, ignoring potassium fertilizer and trace fertilizer generally exists in agricultural production. Because of excessive nitrogen fertilizer application, maize often has poor lodging resistance and serious diseases and insect pests, resulting in different degrees of yield reduction. Phosphorus and potassium fertilizer and microelement fertilizer should be applied as seed fertilizer deep or early before jointing, nitrogen fertilizer should be applied in stages, 2/3 of the total amount of nitrogen fertilizer should be applied at jointing stage, and 1/3 of the total amount of nitrogen fertilizer should be applied at large bell stage. In addition, foliar fertilizer application during the growth period can achieve significant yield increase effect. Four is not timely watering. Some farmers do not water corn according to the law of water demand, often only when they find drought, thus missing a good opportunity to promote plant growth and development. On the premise of sufficient moisture sowing, water for jointing and booting, heading and flowering and filling should be irrigated in time to meet the water needs of plant growth and development. Click for more corn growing technology Click for more food crop growing technology