利用设置在福建省武平县的马尾松遗传增益测定林材料，以验证优良种源、母树林及种子园混系的现实遗传增益。
The genetic gain test plantations of masson pine located in Wuping of Fujian (China) were used to certificate realized genetic gain of superior provenances, seed stands and clonal seed orchards.
在昆明试验点测定林保存完好的无性系中，直干桉有5个、蓝桉有3个无性系的材积超过对照（实生木） ，其中超过30 %有6个（直干桉4个，蓝桉2个）。
In those clones maintained completely, the volume of 8 clones (5 E maidenii and 3 E globulus) exceed that of the control and of which 6(4 E maidenii clones and 2 E globulus ) exceed by 30% in Kunming.
结论：方法简便，重现性好，适用于利巴韦林滴眼液的含量测定，且本品疗效好，无副作用。
Conclusion: the method was simple and accurate, it can be used to determine the ribavirin content in ribavirin eye drops, its therapeutic effect is good with no side-effect.
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