认为萌芽更新应作为刺槐更新和低产林改造的首选方式。
Sprout regeneration should be considered as the first choice for black locust reproduction and reclamation of low productive plantations.
经过多年的调查和改造试验，得出了能被广大农民所接受而且适应性强的有关技术措施，对指导毛竹低产林改造具有现实意义。
After years' research and reforming experiment, provide technical measures that are widely accepted and have strong adoptions, which make real meaning to reform the low productive bamboo forest.
在调查研究全省现有低产林及疏林资源基础上，着重分析了低产用材林形成的原因。并提出了低产用材林改造的技术路线与相应措施。
Technique and countermeasures were proposed for transformation of low yield timber forest after analysis on its causes through investigation on current resources of low yield and scattered forest.
初步看出，用优良无性系嫁接换种改造低产林方法简易，增产幅度大，是改造低产林的有效途径。
It seemed that it is a good way to transform low yield forest by elite clones grafting for its easy method and big increase of output.
初步看出，用优良无性系嫁接换种改造低产林方法简易，增产幅度大，是改造低产林的有效途径。
It seemed that it is a good way to transform low yield forest by elite clones grafting for its easy method and big increase of output.
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