Effects of Different Base Materials on Growth of Container Seedlings of Alnus formosana
For studying the effects of different base materials on seedling height , ground diameter , above-ground dry weight, under-ground dry weight , leaf area and relative chlorophyll content of Alnus formosana, seven differ-ent treatments were designed by using yellow soil , pond sludge , pig manure and biogas residue as matrixes and pure soil as control .The results showed that seedling height , ground diameter and leaf area treated by seven dif-ferent base materials were all higher than those of control obviously .Above-ground dry weight treated by P4, P6 and P1 were higher than those of control obviously .Under-ground dry weight treated by P6 and P4 were higher than that of control obviously .The relative chlorophyll content treated by P 1, P7 and P2 were higher than that of control obviously .By comprehensive assessment of subordinate function values , eight different base materials were sorted by P4>P6>P5>P3>P1>P7>P2>CK.So, the best base material was P4 (70 % yellow soil+15 %pond sludge+10 %pig manure+5%biogas residue), followed by P6 (70%yellow soil+5%pond sludge+15 %pig manure+10 % biogas residue ) .
base materialAlnus formosanacontainer seedlinggrowth