main tree species for plantation 主要造林树种
main tree species for forestation 主要造林树种
main timber tree species 主要用材树种
main greening tree species 主要绿化树种
main planting tree species 主要造林树种
At night, the ascent of SAP flow could be observed in the above main tree species owning to the existence of root pressure.
夜间，胡杨同样存在明显的树干液流现象，这主要是由根压引起的。
Poplar is one of the main afforestation tree species in Shandong Provicne. Defining the best cutting period, afforestation density and mixed mode is the key technologies to promote biomass.
杨树是山东省主要造林树种之一，确定最佳采伐周期、造林密度、混交方式，是提高生物量的关键技术。
The main Sylvicultural tree species in Sandong were selected for the researches on water consumption.
以山东省常见的主要造林绿化树种为研究对象，进行林木耗水性研究。
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