【摘要】 利用 5个马尾松优良种源 ,在肥力较低的缺磷立地上布设种源与磷肥互作试验林 ,研究优良种源对不同磷投入水平的树高生长反应。结果显示 :5个优良种源对磷肥量的反应式样差异很大 ,有的种源对磷投入非常敏感 ,有的不敏感。不同种源对磷肥量的反应以及磷的时效性也很不相同。依据各种源对磷投入的不同反应初步制定了相应的幼林施肥原则。研究发现树高生长在种源间的遗传差异与磷环境有关 ,适当施以磷肥就可显著提高马尾松种源试验效果。与种源效应和磷肥效应相比 ,虽然种源与磷肥互作效应较小 ,但不能忽略它的存在更多还原

【Abstract】 Five Pinus massoniana superior provenances were used to test the interaction of P.massoniana and phosphorus fertilizer on low fertility and phosphorus deficient site,and to study the response of height growth to different phosphorus supply.The results showed that the response pattern of height growth varied with the provenances tested.Some provenances were more sensitive than the others.There existed significant differences among provenances in the response and the effectiveness for a given period of time.The fertilization principles for young stand of different provenances were made according to various response of each provenance to phosphorus supply.It was found that the genetic variation of height growth among provenances was correlated with the phosphorus condition.Proper phosphorus supply could improve the preciseness of provenance test significantly.For the high yielding plantation,the interaction of provenance and phosphorus could not be ignored,in spite of its less importance as compared with provenance effect and phosphorus effect.更多还原