How to fertilize wheat at jointing and booting stage? What are the fertilization techniques?

1. For weak seedlings with late sowing, insufficient base fertilizer, small population and possibly insufficient ears, as well as wheat fields with serious loss of strength and yellowing, early application, skillful application of green manure and balanced manure should be implemented to promote the formation of weak and strong plants as soon as possible.

2. For wheat fields with late sowing, large amount of straw returning, insufficient application of base fertilizer and yellowing after fertilizer removal, topdressing urea 5 ~ 10 kg per mu in early spring and 5 ~ 10 kg per mu at jointing and booting stage.

3. Zinc-deficient plots, spraying 0.5% zinc sulfate 0.3 kg per mu.

4. For the prosperous wheat fields with high fertility and large population in the early stage, strengthen measures to control the prosperity, strictly control fertilization in early spring, prevent excessive density and disease aggravation, and reduce the lodging risk in the later stage.