Biomass of Chestnut at Seedling Stage

Taking 80 strains of 1 year and 2 year chestnut seedlings as test materials for 2 consecutive years,each organ biomass of roots,branches,leaves were determined by adopting the whole plant.Each organ biomass allocation correlation of ground diameter(D),seedling height(H) biomass(W) of various components for chestnut were analyzed.Regressive model between D2H W were established.Result shows that:along with the increasing age at seedling stage,the proportion of root biomass reduces gradually;the proportion of branch biomass increasing gradually;the proportion of leaf biomass changed little.The number biomass of different grades of seedling height at the same seedling age are approximate to normal distribution.Individual biomass significantly increases with the growth of seedling.The model of power function regression equation between D2H W have a higher regression effect(R2=0.895 9-0.971 2,MAPE=16.59%-23.01%),and have a certain estimation value.