After formation density stress, density may tillering and leaf age processes, the faster the smaller the density leaf process, the greater the density increase faster the tillers;
After the formation of density stress, density can affect the leaf age process and single strains, the faster the density of the smaller leaf age process, the greater the density of the number of stems increased;
After density stress, density can affect leaf age process and tiller per plant. The smaller the density is, the faster the leaf age process is, and the larger the density is, the faster the tiller number increases;<br>