1) straight stem
直干
1.
Wood anatomy of straight stem and twist stem in Pinus yunnanensis Franch were studied via a microscope.
利用光学显微镜对云南松直干、弯干材木材构造进行解剖学观察,结果表明:弯干材在解剖结构上跟直干材基本保持一致。
2) DC influence
直流干扰
3) direct dryingl
直接干燥
4) Eucalyptus maidenii
直干蓝桉
1.
A Study of Controlling Shoot Blight of Eucalyptus maidenii in Huili County of Southwest Sichuan;
川西南会理县直干蓝桉枝枯病防治研究
5) E.maidenii
直干桉
1.
Study of Proper Rotation Period of Eucalyptus globulus and E.maidenii Timber Forests;
蓝桉、直干桉纤维用材林合理轮伐期的研究
2.
The effects of seedling nursing of E.
对四川攀西地区直干桉多穴容器盘的育苗效果进行了研究,研究结果表明:(1)多穴容器盘育苗能从根本上解决容器苗的根系盘绕现象;(2)多穴容器盘培育直干桉容器苗宜采用容积为150 mL以上的导根线类多穴容器盘;(3)攀西地区多穴容器盘培育直干桉容器苗的最佳基质配方为燥红土5%+泥碳土35%+60%牛粪。
3.
This paper discusses the relations between the site factors and the species of subter-ranean pest of Eucalyptus globulus and E.
本文探讨了立地环境因素与蓝桉、直干桉人工林地下害虫种类、分布及危害程度的关系。
6) stem diameter
树干直径
1.
The growth pattern in stem diameter of nine sample trees of Larix principis-rupprechtii was measured by dendrometer and the response of which to the meteorological factors was researched from May to November in 2005 in the north of Liupan Mountain, Ningxia.
结果表明:树干直径的日最大值出现在6:00—9:00,最小值则在16:00—20:00;直径生长的季节变化表现为前期快后期慢,8月下旬以后基本停止生长;林分内优势度大的林木生长较快;树干直径生长过程随时间的变化符合幂函数曲线,方程的确定系数为0。
补充资料：直干
1.亦作"直干"。 2.挺直的树干。
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