The method supplies an approach of high yield to synthesize maleopimaric acid from gum rosin of pinus massonina under more mild condition.
该方法开辟了在较缓和条件下，从脂松香制备高得率马来海松酸的途径。
Natural forest stand structure of Pinus tabulaeformis was studied.
对油松天然林的林分结构进行了研究。
The results would lay a good foundation for genetic improvement for Pinus bungeana.
研究结果将为白皮松遗传改良奠定坚实基础。
To survive on this ascetic diet, Pinus longaeva invests very little energy in growth.
为了在这样恶劣的条件下存活下来，科恩松（Pinus longaeva ）只消耗很少的能量用于生长。
Norway pine (Pinus resinosa Ait.
挪威松，北美赤松…
Pine resources are abundant in Greece and Turkey. Pinus halepensis Mill.
希腊和土耳其具有丰富的松树资源。
However, the growth of the Pinus trees is prevailingly constrained by shortage of water.
但是，由于缺水，油松的生长经常受到严重制约。
The soil labile carbon in a Pinus taeda plantation in South Jiangsu, China was investigated.
对苏南火炬松人工林中的土壤有效碳进行了研究。
Simao rosin reference materials were prepared from Pinus kesiya var. langbinanensis oleoresin.
用思茅松松脂制得思茅松松香标准样品；
But the seedlings of Pinus Bugeana grow slowly, which results in the short supply of seedlings.
但因其实生苗前期生长缓慢，导致苗木供不应求。
Pinus elliottii had been found as pioneer plant suitable for sandy land ecosystem reconstruction.
湿地松是一种适合沙化土地生态系统重建的先锋植物。
This research would provide basis for early selection and prediction of Pinus koraiensis wood quality.
本项研究为红松材性早期选择和预测提供依据。
The carbon content and carbon storage of Pinus massoniana Lamb at different growing stages were measured.
对福建马尾松幼龄林、中龄林和成熟林生态系统中各组分的含碳率和碳贮量进行了比较研究。
Slope and spacing and intra-spacing had little effect on Pinus sylvestris var. mongolica and Jinhong apple.
坡度、株行距对樟子松、金红苹果人工林幼树的生长影响均较小。
The conclusions provide scientific basis for plantation cultivation and rational utilization of Pinus elliottii.
研究结果为湿地松人工林培育和木材合理利用提供科学依据。
Pinus koraiensis, Larix gmelini and Larix olgensis are the species of the most important timber in northeast of China.
本文研究了东北红松、落叶松和黄花落叶松的木材密度和顺纹抗压强度的变异。
Objective: to establish a method for the content of total lignans in extract of pine needles of Pinus Massoniana Lamb.
目的：建立马尾松松针提取物中总木脂素的含量测定方法。
Pine resources are abundant in Peru. Main pine species are Pinus patula, P. radiata, P. montezumae and P. pseudostrobus .
秘鲁具有丰富的松树资源，主要树种有展松、 辐射松、粗糙枝松和粉枝五针松等。
Based on survey resources in the past years, natural forest stand structure of Pinus tabulaeformis in Machibei was studied.
依据历年调查资料，对麻池背油松天然林的林分生长结构进行了研究。
Therefore, using water-absorbing powder will increase the survival rate of seedlings in planting Pinus silvestris var. mongolica.
所以，对樟子松幼苗的根系用吸水剂进行适当的保水处理，无疑是会提高造林成活率的。
Some resin containing cells are present in parenchym of cortex in shoot apex and xylem parenchym of stem in Pinus tabulaeformis .
油松茎端的皮层薄壁组织和幼茎木薄壁组织中具含树脂细胞分布。
The community structure and dynamics of soil water of Pinus sylvestris var. mongolica plantation were studied in a growth season.
对樟子松人工林群落结构和土壤水分动态进行研究。
The sap flow velocity of Quercus variabilis was 5~10 times higher than that of the Pinus tabulaeformis on a monthly average basis.
栓皮栎月平均树干液流速率较油松的月平均树干液流速率高5-10倍。
The community structure and dynamics of soil water of Pinus sylvestris var. of the mongolica plantation were studied in a growing season.
对樟子松人工林群落结构和土壤水分动态进行研究。
The damage of the cytoskeleton system in the pollen and the pollen tube of Pinus thunbergii induced by ion beam implantation were researched.
以黑松花粉粒和花粉管为试验材料，研究了离子注入对细胞骨架系统的损伤效应。
The stem biomass of Pinus in the pure forest was of pyramid shape and the deadwood biomass accounted for 1.75%, but 4.20% in the mixed forest.
纯林中马尾松的干生物量基本上为金字塔形，枯枝生物量所占比例为1.75%，而混交林中为4.20%。
This paper reports the results of investigation on Bryophyta Communities in Pinus massoniana forest in Ma'an Mountain Forest Park of Wuhan City.
本文报道了武汉市马鞍山森林公园马尾松林中苔藓植物群落研究结果。
This paper reports the results of investigation on Bryophyta Communities in Pinus massoniana forest in Ma'an Mountain Forest Park of Wuhan City.
本文报道了武汉市马鞍山森林公园马尾松林中苔藓植物群落研究结果。
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