Melamine is commonly used in plastics and fertilizer, among other products. Its highnitrogen content can make foods appear to be protein-rich in standard nutrition tests.
The standard of healthy seedlings for winter wheat, the application of nitrogenfertilizer and the colonial structure of high yield are also introduced in this paper with some new views.
The yield increase of K fertilizer was quite high at two rates of nitrogen application, and it closely relative to the content of available K in soil and potassium application rate.