1) fall needle
落针
1.
Results showed that physiological disease was cause of fall needle and withering in Pinus armandi, the physiological disease was relative to the tiny chemical elements such as Zn, B of soil and extreme weather, but it was irrelevant to microbial pathogens.
本文通过对多种环境因素的观察与分析以及病原微生物的分离、培养、接种等试验,查明了华山松落针枯死的病因为生理性病害,与土壤缺Zn、B等微量元素及极端气候相关而与侵染性病原无关。
2) fragmentation
[英][,frægmən'teiʃən] [美][,frægmən'teʃən]
针刺落屑
1.
Improve the resist fragmentation properties of the pharmaceutical butyl-rubber stoppers;
提高丁基橡胶药用瓶塞的抗针刺落屑性能
4) faller drops
落针次数
5) Lophodermium piceae
云杉落针病
1.
Analysis and evaluation on the fatalness of Lophodermium piceae of water source conservation forest area in both Bailong and Tao River;
白龙江、洮河水源涵养林区云杉落针病危险性分析评估
6) needle litter
针叶凋落物
1.
Four treatments of Chinese Fir needle litter, Chinese Fir needle litter with addition of 2 g and 4 g NaNO_3 respestively, and Chinese Fir needle litter mixed with leaves from understorey plants were designed to investigate the effects of nutrient status on the decomposition rates and nutrient releases of Chinese Fir needle litter using the litter bag technique.
通过外加氮源或将杉木针叶与林下植物叶混合来改变杉木林凋落物中针叶的养分状况,与杉木林针叶凋落物分解进行比较,分析针叶养分状况及其对杉木林凋落物分解速率和养分释放的影响。
补充资料：起针、落针
起针、落针 刺绣术语。指刺绣过程中运用绣针的两个动作，自下而上，称为“起针”；自上而下，称为“落针”。
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