1) stem sample site
树干部位
2) the base of tree stem
树干基部
1.
Chemical properties of stem flow in Chinese pine and sharp tooth oak forests as well as its effect on the characteristics of soil nearby the base of tree stems in the two forests were studied.
研究了锐齿栎、油松茎流化学性质及其树干基部土壤特性，结果表明：油松茎流的ｐＨ值为４。
3) tree-crown location
树体部位
1.
Studies on Pn of the leaves of different shoots and tree-crown location in plum tree;
李不同类型枝条和树体部位叶片光合速率研究
4) Position within tree crown
树冠部位
5) tree stem capacitance
树体干部电容
1.
The trends of decrease of tree stem capacitance and increase of tree stem impedance were showed on slight and severe drought treatments from the third day after applied drought stress,while the similar changes were observed on the control from the ninth day.
研究结果表明,对毛白杨扦插苗干旱胁迫第3天,各处理出现超氧化物歧化酶(SOD)活性下降,丙二醛(MDA)和可溶性糖含量增加;树体干部阻抗升高、树体干部电容减小的变化;对照处理则在第9天出现类似变化。
2.
The results showed that the activity of peroxidase (POD) increased and then decreased, activity of polyphenoloxidase (PPO) and tree stem impedance increased gradually, tree stem capacitance and unit capacitance decreased after %Populus tomentosa% cuttings was infected with %Botryosphaeria dothidea.
结果表明:杨树溃疡病胁迫下,毛白杨扦插苗POD酶活性先增大后减小,PPO酶活性持续增大,树木干部电容和单位电容呈减小趋势,而树木干部阻抗呈增大趋势,最先表现出统计学差异性的指标是POD酶活性,其次为树木干部电容,之后为树体干部阻抗,最后是PPO酶活性;树木干部电容和单位电容与马尾松枯针率均有显著的正相关关系,同时利用树体干部电容0·5nF为阈值,判断马尾松是否感染松材线虫的准确率可达89·26%。
6) tree stem impedance
树体干部阻抗
1.
The trends of decrease of tree stem capacitance and increase of tree stem impedance were showed on slight and severe drought treatments from the third day after applied drought stress,while the similar changes were observed on the control from the ninth day.
研究结果表明,对毛白杨扦插苗干旱胁迫第3天,各处理出现超氧化物歧化酶(SOD)活性下降,丙二醛(MDA)和可溶性糖含量增加;树体干部阻抗升高、树体干部电容减小的变化;对照处理则在第9天出现类似变化。
2.
The results showed that the activity of peroxidase (POD) increased and then decreased, activity of polyphenoloxidase (PPO) and tree stem impedance increased gradually, tree stem capacitance and unit capacitance decreased after %Populus tomentosa% cuttings was infected with %Botryosphaeria dothidea.
结果表明:杨树溃疡病胁迫下,毛白杨扦插苗POD酶活性先增大后减小,PPO酶活性持续增大,树木干部电容和单位电容呈减小趋势,而树木干部阻抗呈增大趋势,最先表现出统计学差异性的指标是POD酶活性,其次为树木干部电容,之后为树体干部阻抗,最后是PPO酶活性;树木干部电容和单位电容与马尾松枯针率均有显著的正相关关系,同时利用树体干部电容0·5nF为阈值,判断马尾松是否感染松材线虫的准确率可达89·26%。
补充资料：树干
1.亦作"树干"。 2.树的主体部分;树身。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条