Effect of Different Controlled-release Fertilizer and Container Size on Growth of ContainerQuercus texana Seedlings

In March 2016, 1-year container Quercus texana seedlings were selected for experiment on different controlled-release fertilizer andcontainer size in Tiantai, Zhejiang province. In November of the same year, determinations were carried out on height, basal diameter growth. Theresults showed that the size had significant positive effect on growth of height and basal diameter of seedlings (P<0.01). The effect of differentcontrolled-release fertilizer on basal diameter growth and height-diameter ratio of seedlings was not obvious, but significant on height, especially 3.5kg/m3 fertilizer had the largest height growth and height-diameter ratio. Multi-factors analysis of variance demonstrated that there was significantinteraction effect (P<0.01) between controlled-release fertilizer and container size on height growth and height-diameter ratio, whereas not significanton the basal diameter growth. Based on the interaction effect of the container size and fertilizer and consideration of seedling cost, we concludedthat container of 18 cm × 20 cm and with 3.5 kg/m3 controlled-release fertilizer was the best combination.