芷村林场华山松种源选择试验

Provenance selection of Pinus armandi in Zhicun forest farm

为了改变蒙自芷村林场在华山松造林用种上的盲目调用现状,加速对华山松树种的遗传改良,1998年在蒙自县芷村林场开展了华山松种源选择试验,把杨柳井和杨梅坝改建的两片华山松母树林所采种子为主要研究对象,并把用昌宁、腾冲、保山等华山松种源区以及弥勒华山松种源地（作对照）的种子一并纳入试验。根据其10年生时的观测材料作统计分析,结果表明：芷村林场两华山松母树林采种营建的试验林每公顷的林木材积生长量比对照提高了2.04%~7.13%。但在参试的7个处理中,表现较好的为昌宁、腾冲华山松种源区,其华山松每公顷的林木材积超过了对照的32.48%~35.64%,比芷村林场两个华山松母树林的种源林提高了23.67%~32.93%。

The growth benefits of progeny of Pinus armandi seed production stand in Zhicun forest farm of Mengzi county in Yunnan province were analyzed and appraised.Besides the local provenances,10 years old progeny forests including provenances of Changning,Tengchong and Baoshan were taken as experimental materials.The Pinus armandi stand in Mile County was chosen as the control.The analysis results show that the volume growth increments of studied progeny forests were 2.04 %~7.13 % higher than the control.Among the tested 7 provenances,two provenances namely Changning and Tengchong had good performance,with the unit area volume 32.48 %~35.64 % higher than the control,and 23.67 %~32.93 % higher than the local provenances in Zhicun forest farm.