Effects of adding fresh wood chips on the cultivated soil and growth of peony
This study took the fresh wood chips,obtained from the pruning and crushing of urban trees,as a soil improvement additive to compare the morphology,full-bloom stage and leaf relative chlorophyll value(SPAD),and found that the addition of fresh wood chips significantly increased the total porosity,non-capillary and capillary porosity of the soil(Ft=311.502,Fni=226.41,Fc=92.384,p＜0.01),and significantly changed the flowering period,annual increment of plant height,crown width,annual increment of basal diameter,and SPAD of leaves of peony.The optimal improvement formula for adding 60％of 6 cm fresh wood chips was proposed.The study results provide a soil improvement method with good air permeability and water retention,low cost,no negative effects,and green environmental protection for the cultivation of southern peony.
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