The influence of Different Fertilizers on the Growth of Young Szemao Pine forests

Four different fertilizers were applied for conducting 15 months of Szemao pine tree height and ground diameter growth test. The results showed that among the four different fertilizers,treatment 1 could get a better tree height and ground diameter growth,namely the processing of 200 g fertilizer, but the offect of treatment 4 was poor,namely,no fertilizcr was used. 4 treatments displayed extremely significant differences. Within the scope of the maximum rate of 200 g,tree height and ground diameter would increase with the increase of fertilizer rate.