Since 1989,FAO project GCP/CPR/009/BEL of the Three North Shelterbelt Programme has assisted in introducting more than 650 poplar clones.This material has been stored in clonal banks,and parts of it is being tested in field clonal trials in different sites of Korqin sandy lands.This paper summarizes the preliminary re s ults from four main trials.23 clones had been selected by multiple evaluation co nsisted of 5 main tactor indexes and 2 secondary tactor indexes from contrast tr ials based on primary aelection.The results showed that the growth increment of clones Jian 10+# (P.×euramericana cv' ND182),Xiaohei 8401 (P.simon ii-Baicheng × P.nigra-Aertai 8401),Bailin 2+#(P.nigra × P.pyra midalis),Euro-American I-M (P.euramericana cl.“I-M”),Zhonglin 86-22( P.Zhonglin 86-22),Heilin 1+#(P.xiaohei × P.p15A cl.),Liaoza 2+#( P.simonii × Xiaozhuannica cl.Liaoza-2),Nixing × Shanhaiguan (P.nigr a × Puplus deltoides cv.“Shanhaiguan”),Zhongchi Heixiao(P.nigra × P.si mo nii cv Zhongchi'),Faku 1+#(P.simonii × Xiaozhuannica cl.Faku-1),etc .,was obviously beyond Baicheng 41+#(P.sinonii × Xiaozhuannica cl.Baic heng- 41)and Baicheng 2+#(P.simonii × Xiaozhuannica cl.'Baicheng-2),which w e re the local main tree species.Meanwhile,cold resistance,disease and pest resist ance,and stem form of these clones also behave prominently.So the above clones a re very suitable for planting and extending in Korqin sandy land.%本文是在引选育杨树无性系苗期综合评价基础上，对苗期选出的优良无性系进行造林综合评 价的初步结果。经5～8a造林对比试验，并通过5项主要因素指标评价和2项次因素指标综合 评价，初步选出了23个无性系。其中，建10＃(P.×euramericana cv'ND182)、小黑8 401(P.simonii-Baicheng×P.nigra-Aeriai8401)、白林2＃(P.Nigra×P.py ramidalis)、欧美I-M(P.euramericana cl.“I-M”)、中林86-22(P.Zhongli n 86-22)、黑林1号(P.xiaohei×P.p15A cl.)、辽杂2＃(P.simonii×Xiaozhuann ica cl.Liaoza-2)、拟青×山海关(P.nigra×P.deltoides cv.“Shanhaiguan”) 、中赤黑小(P.nigra×P.simonii cv Zhongchi')、法库1#(P.simonii×Xiaozhuan nica cl.'Faku-1)等，其生长量明显超过当地主栽树种白城41＃(P.simonii×Xiaoz huannica cl'Baicheng-41)和白城2＃(P.simonii×Xiaozhuannica cl'Baicheng |2)，抗寒、抗病、抗虫性、树干干型也都表现突出，适合科尔沁沙地有选择性种植和推广 。
展开▼
