Corn planting techniques: what factors will affect the yield of summer corn per mu?

What factors will affect the yield of summer corn per mu? Please give an introduction and solutions to affect the yield of summer corn mainly have the following points: first, the planting density of corn is unreasonable: too large planting density is a more prominent problem in the current summer corn production. For example, some farmers plant "Nongda 108", leaving more than 5000 seedlings per 667m2 (1 mu), which is about 1x3 more than the suitable density of this variety. Because the density is too high, the growth and development of single plant is poor, the empty culm rate is high, and the female ear is bald and tipped seriously, resulting in varying degrees of lodging, resulting in reduced yield. Second, the fertilization of corn is not scientific: in fertilization, there are widespread phenomena of heavy nitrogen fertilizer, light phosphorus fertilizer, ignoring potassium fertilizer and micro-fertilizer, because the crop yield is restricted by the minimum nutrient law. Single excessive application of nitrogen fertilizer can not achieve high yield, on the contrary, it will cause poor lodging resistance, serious diseases and insect pests, resulting in varying degrees of yield reduction. In addition, improper fertilization period and blind application of some effective nutrients (note: the pure content of nitrogen, phosphorus, potassium, medium and trace elements should not be taken into account) too low "corn special fertilizer" will lead to a decrease in yield. Third, it is not timely to water corn: some farmers have a serious idea of relying on the weather and other rain, often not watering "critical water" according to the law of corn water demand, but watering "life-saving water" only in the event of drought, thus seriously affecting yield. Click to get more corn planting techniques click to get more food crop planting techniques