苏铁爱好者使苏铁处于危险之中。
是什么导致苏铁处于危险之中呢？
苏铁已成为幸运和健康的象征。
苏铁类植物一年开花一次。
苏铁爱好者买了它们，并种在私人花园里。
然而，一些关于苏铁风媒传粉的传闻也不容忽视。
Nevertheless, anecdotal reports of wind pollination in cycads cannot be ignored.
1895年发现的苏铁树是同类树种中的唯一一株。
这些生长缓慢的成年苏铁每棵甚至都能卖到数万美元。
These slow-growing adult cycads even sell for tens of thousands of dollars each.
此外，大部分雌苏铁球果的结构似乎与风直接授粉不一致。
Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind.
最近，南非政府采取了一些措施来保护苏铁不被偷走或交易。
Recently, South African government has taken some actions to protect cycads from being stolen or traded.
在南非，苏铁类植物的处境越来越糟糕，但这几乎没有引起公众的任何注意。
In South Africa, the situation of cycads is getting terrible, but this has drawn little attention from the public.
实验表明，昆虫能充当苏铁科植物、罕见热带植物、棕榈状热带植物的授粉者。
Experiments show that insects can function as pollinators of cycads, rare, palmlike tropical plants.
苏铁雄球果的结构与花粉的风传播相当一致，花粉云从一些较大的球果中释放出来。
The structure of cycads male cones is quite consistent with the wind dispersal of pollen, clouds of which are released from some of the larger cones.
从原生栖息地移走的苏铁，以及从原生栖息地的昆虫身上移走的苏铁，通常是不育的。
Cycads removed from their native habitats—and therefore from insects native to those habitats—are usually infertile.
例如，苏铁的雄性圆锥体会脱落近100立方厘米的花粉，其中大部分可能是被风吹散的。
The male cone of Cycas circinalis, for example, sheds almost 100 cubic centimeters of pollen, most of which is probably dispersed by wind.
本文是苏铁白化苗系列报道的第二部分。
This paper is the second part of serial reports on albino seedling of cycas revoluta.
本文系苏铁白化苗研究系列报道之二。
This paper is the second part of a serial reports on albino seedling of cycas revoluta.
阿拉尔至阿克苏铁路建设项目列入兵团重点项目，已启动规划。
Alar to Aksu railway construction projects is listed in the key projects of Corps, the planning has initiated.
林木青翠，是“南宁市的局肺”， 有世界上最大的苏铁园。
A green park, it is the lungs of Nanning, the biggest cycad garden around the world.
由于叉叶苏铁分布范围小，数量少，是我国公布的二类保护植物。
Because the limited range and the quantity of Cycas micholitzii which is involved in the second class of the Protected Plants in China.
苏铁珊瑚状根中蓝藻营养细胞的超微结构具一般蓝藻细胞的特征。
The ultrastructure of vegetative cells of blue-green alga, Anabaena cycadae, in the coralloid root of Cycas revoluta has the general characteristics of the cyanophycean cells.
他们原本期望发现晚白垩世时期著名植物如针叶树和苏铁存在的证据。
They expected to find evidence of well-known Late Cretaceous vegetation such as conifers and cycads.
苏铁植物分11属共200余种，其中许多种的化学成分和药理作用已陆续有报道。
There are 11 genus with about 200 species of cycads in the world, and the chemical constituents and pharmacology of many species have been reported.
分为四个不同的类群：苏铁类、银杏类、松柏类、买麻藤类植物以及一些化石类群。
There are four widely different living groups : the cycads, ginkgo, conifers, gnetophytes, and several fossil groups.
从物种保护来看，35.77%物种没有得到保护，主要集中在兰科植物、苏铁和雉科。
In view of protected species, 35.77% species are not under protection, most of which are Orchidaceae, Cycas and Phasianidae.
对中国苏铁科植物已知病虫害及其防治研究进行综述，整理出已知病害4种，虫害45种。
The known diseases and insect pests of Cycadaceae in China and their control were summarized, and 4 species of disease and 45 species of insect pest damaging Cycadaceae plants in China were recorded.
托克逊地区当时的植被是由银杏、苏铁类和松柏类等乔木，并伴有真蕨类等草本植物组成。
At that time the vegetation of the Toksun area consisted of such arbores as Ginkgo, Cycadopites and Coniferales, associated with herbs such as Filices.
苏铁叶—瑞宝日常所需的健康基本食物。它是一种与松柏叶片完全不同的食物，仍然能用于瑞宝的日常所需。
Cycad Leaf - a healthy essential food which supplies PLEO rb its daily needs. The taste is different from the Conifer Leaf and can also be used as daily food for PLEO rb.
也证实了同一地方不同株苏铁根周围的土壤蓝细菌具有多态性，苏铁珊瑚状根不同分支的蓝细菌也具有多态性。
The diversity of the isolates from different branches of the root and the surrounding soils were demonstrated as well.
简述了苏铁病虫害研究概况、主要病虫害发生规律和防治措施，提供了中国已知苏铁病虫害名录并编制出检索表。
Checklists of the known diseases and insect pests were provided, and the identification keys were prepared separately for the known diseases and insect pests of Cycadaceae in China.
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