樟子松种子园土壤改良与母树生长的关系

Relationship Between Soil Improvement & Growth of Mother Trees of Pinus sylvestris var. mongolica Seed Orchard

连续5年在樟子松种子园3个小班进行施肥、灌水、人工辅助授粉,结果表明:在树龄10年生时,施肥可提高母树生长量2.3%～7.1%;灌水对母树生长和结实无显著促进作用,人工辅助授粉可提高球果产量46.6%。待母树树龄12年生后,上述措施可不必再进行。

Fertilization,irrigation,artificial pollination were conducted on 3 sub-compartment of Pinus sylvestris var.mongolica seed orchard for five years.Result shows that：fertilization can increase growth of mother trees by 2.3%-7.1% with the tree age being 10 years old;irrigation has no significant promotion on growth fruit of mother trees;artificial pollination can increase the yield of cone by 46.6%.Twelve years old mother trees until after birth,these measures may no longer be conducted.