墨江县景星乡母猪果资源调查及优株选择

2004年在墨江县景星乡设立标准样地和抽样调查的结果表明：豆腐渣果多处于野生状态，有60％左右为未进入结果期的幼树，主要分布在海拔1600-2000m的范围，东坡和南坡的林地中分布较多，零星生长于阔叶林和针阔混交林，景星乡2004年母猪果产量接近80t，母猪果大小年结果和隔年结果现象非常明显，且平均单株产量及果实的单果重差异均较大。通过连续三年观测开花结果情况和树体生长状况，确定了3个优良单株。

Resource Investigation and Superior Tree Selection of Helicia nilagirica Bedd.in Jingxing Village，Mo jiang County

The standard sites was set up and sampling survey in Jingxin Village,Mo jiang County in 2004.The results showed: Most Helicia nilagiricia Bedd.was in wild status still,there was about 60% had not reach the fruiting age.It was mainly distributed at the altitude of 1600-2000m,distributed at forestland which located in east slope and south more than other slope aspect.The Helicia nilagiricia Bedd.was dispersed in evergreen broadleaved forest and coniferous-broad leaved mixed forest.The output of fruit in Jingxing was nearly 80t in 2004.The phenomenon of alternate bearing was severe in Helicia nilagirica Bedd..The difference of average yield per plant and the single fruit was obvious.Based on the result of observation on the status of blossom,fruiting and.Growth from 2004 to 2007,3 superior tree has been determined.