When is the best time for wheat topdressing?

Generally, late February to mid-March is the best time to apply jointing fertilizer. At this time, topdressing can promote tillering and ear formation, and improve ear formation rate; Promote the differentiation of spikelets and florets, and strive for large spikes and more grains; At the same time, it promotes the growth of the above three leaves. Topdressing too early is not good, and too late is not conducive to the formation of yield. If the wheat field population is large and individuals are prosperous, the topdressing time should be pushed back, and the topdressing is just right when the wheat seedlings grow to the second leaf, that is, when the wheat ears differentiate into tetrads. Topdressing is usually carried out in early March for late sowing thin wheat fields. The length of the first internode of the main stem of the wheat plant has been fixed, and fertilization should be applied when the second internode is stretched, so that the internode of the stem will not be too long and the lodging resistance of the plant will be weakened.