北票地区3种针叶树容器苗雨季造林技术研究

在北票半干旱地区开展了油松、樟子松和桧柏3种针叶树雨季容器苗造林试验,分别以春季裸根苗造林为对照,结果表明：在北票干旱和瘠薄立地条件下采用容器苗雨季造林,造林成活率超过95%,春季裸根苗造林,成活率仅为65.4%～74.6%。3个针叶树种容器苗雨季造林比对照能够明显提高苗高生长量、主根长、侧根多,与对照相比,油松苗高生长量提高38.97%,地径提高29.9%,主根长提高40.78%,侧根长提高40.76%;樟子松苗高生长量提高37.59%,地径提高31.69%,主根长提高16.89%,侧根长提高20.90%;桧柏苗高生长量提高27.49%,地径提高34.56%,主根长提高18.90%,侧根长提高35.71%。效果十分显著。

Container Seedling Afforestation of Three Coniferous Tree Species in Rainy Season in Beipiao Region

Afforestation experiments of three coniferous tree species （Pinus taleaformis ,Pinus sylvestris var .mon-golicaandSabinachinensis）inrainyseasonwereconductedinsemiaridareaofBeipiaoRegion .Afforestationsurvival rate are more than 95% by adopting container seedlings to plant under arid and barren site conditions in Beipiao Re-gion;survival rate are 65 .4%-74 .6% adopting naked-root seedlings for planting in Spring .Planting of three conifer-ous tree species in rainy season can significantly increase growth ,length of main root ,number of lateral root ;compa-ring with the CK ,height growth ,ground diameter ,length of main root ,length of lateral root of Pinus taleaformis in-creases by 38 .97% ,29.9% ,40 .78% ＆amp; 40 .76% ,respectively ;height growth ,ground diameter ,length of main root , length of lateral root of Pinus sylvestris var . mongolica increases by 37 .59% ,31 .69% ,16 .89% ＆amp; 20 .90% ,re-spectively ;height growth ,ground diameter ,length of main root ,length of lateral root of Sabinachinensis is 27 .49% , 34 .56% ,18 .90% ＆amp; 35.71% ,respectively .The afforestation effect of container seedlings for three species in the rainy season is significantly in semiarid areas .