How to fertilize corn correctly?

How to fertilize corn correctly? Please guide the following corn topdressing techniques for your reference: a fertilization of 3, 4 pieces. It refers to the one-time fertilization combined with inter-seedling, fixed seedling and transplanting, which is a basis to ensure that the seedling is complete and complete, and to promote seedling health. Generally, the method of looking at seedling topdressing is adopted, and it is appropriate to use human manure and biogas fertilizer, about 30 piculs per mu. Fertilizer fields and bottom fat should be applied less, transplanting fields should be applied more appropriately, and combined with ploughing and weeding, we should do a good job of fertilization. Crispy knee bag with two-way fertilization. This is a jointing fertilizer, but also the vigorous growth of maize stems and leaves, pistil and stamen differentiation when a topdressing, proper topdressing, can help to accumulate more photosynthesis, conducive to pistil and stamen differentiation. The amount of topdressing accounts for 30% of the total topdressing, and the type of fertilizer is mainly special compound fertilizer for corn, 25,30kg per mu. At the same time, it is combined with topdressing, soil cultivation and ridging. Three fertilizer trumpets. This period coincides with the differentiation period of pistil and stamen spikelet and floret of maize, which is the key period to determine the size of ear and the number of grains per ear, and it is also a vigorous period for both vegetative growth and reproductive growth. the heavy application of panicle fertilizer can achieve strong stalk and large ear and significantly increase yield. The amount of topdressing accounts for 60% of the total topdressing, in addition to high-yield fields, generally no longer topdressing phosphorus and potash fertilizer, about 20 kilograms of urea per mu. Four fertilizers were applied to attack grain weight. Grain weight is a topdressing of maize before and after flowering and pollination, in order to prevent late de-fertilization, prolong the life of green leaves, improve its photosynthetic efficiency, and ensure grain fullness with sufficient photosynthates. Grain fertilizer should be applied early, generally during ear silking, and the fertilizer effect should be brought into full play at milking stage, while skillful application depends on ear fertilizer and plant appearance. When ear fertilizer is insufficient, there are many yellow leaves below ear node, and when de-fertilization occurs, grain fertilizer should be applied. Click to get more corn planting techniques click to get more food crop planting techniques