Based on the application of basal fertilizer, spring maize should be used as a method of fertilization with light weight, medium weight, and subsequent fill. Before the light, refers to the before and after the jointing of corn, fertilization, jointing fertilizer is also called attacking stalks, usually about 45d after sowing, this time is the corn stems and leaves vigorous growth, tassels began to differentiate. Topdressing can promote leaf enlargement at the ear and ear, increase stem diameter, and promote ear differentiation. Spring corn jointing fertilizer should account for 30% to 40% of the total amount of nitrogen topdressing, and the amount of topdressing should be increased or decreased according to soil fertility, the amount of base fertilizer, and the growth of seedlings. If necessary, phosphorus and potassium fertilizers should also be applied during the jointing period. Zhong Zhong means that the large bell mouth is recaptured. This period of top dressing can increase the seed-setting rate, play the role of keeping flowers and keeping grain, and is an important period for rushing for large spikes and many grains. The big bell mouth fertilizer should account for 40% to 50% of the total nitrogen fertilizer. After supplementation, it refers to top dressing during flowering and pollination. The late spring corn needs more fertilizer. In order to prevent defertilization, the late application of granule fertilizer can enrich the grain and reduce the baldness. At this stage, topdressing generally accounts for 10% to 20% of the topdressing amount, and the compensatory fertilizer can also be applied to the method of applying fertilizer from the root. Drop Down Grab Bar,Drop Down Grab Rail,Drop Down Toilet Rail,Drop Down Handrail Active Life Healthcare Co.,Ltd , https://www.alh-med.com