Effects of different fertilization modes on the growth and nutrients of Cinnamomum japonicum var.chenii seedlings
A field experiment was conducted on a nursery land of Zhoushan Forestry Institute in 2013 to compare the effects of no fertilizer (CK),total fertilization(TF),straight fertilization(SF)and average fertilization (AF) on the growth and nutrient content of Cinnamomum japonicum var.chenii seedlings.The results showed that the height,ground diameter,and biomass followed the order ofAF ＞ SF ＞ TF ＞ CK.Compared to the CK,the height in the treatment of TF,SF,and AF increased by 3.84％,5.50％,and 8.82％,respectively and the ground diameter increased by 1.15,1.18,and 1.19 times,respectively,whereas the biomass increased by 72.46％,77.54％,and 79.10％,respectively;however,no significantly difference among the three treatments was observed (P＜ 0.05).The nutrient content in the AF treatment was the highest and the accumulation rate of nutrients in leaves was the greatest.The content of N was the highest followed by K and P in the same tissue.Nutrient uptake and utilization parameters of AF were higher than SF and TF and N uptake and utilization parameters of SF were higher than TF,while P and K uptake and utilization parameters were lower than TF.The fertilization efficiency and biomass harvest indexes were followed by the order ofAF ＞ SF ＞ TF.
plant nutritionfertilization modesCinnamomum japonicum var.cheniinutrient use efficiencyfertilizer efficiency
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