查询词典 eucalyptus

Effect of chlorine dioxide pretreatment on oxygen delignification of RDH kraft pulp from eucalyptus was studied in the paper.

研究了 ClO2预处理对桉木RDH硫酸盐浆氧脱木素的影响。

In this research, we investigated the edaphon community structure from Gaofeng forest-farm Eucalyptus plantation in Guangxi Nanning by PCR-RFLP technique and 16S rDNA sequence analysis.

本研究利用限制性内切酶片段长度多态性和16SrDNA序列分析相结合的方法研究了广西南宁高峰林场人工桉树林中土壤微生物的群落结构。

Analyses the main problems on the development of Zhanjiang advantageous industries including: firstly, the agriculture infrastructure is still backward, not power enough to resist the nature disaster; secondly, the agricultural product processing and circulation is still lag behind the situation of the growing economy; thirdly, the agriculture mechanism is low; fourthly, inefficient planting industry; fifthly, it hasn't realized the cross-industry and cross-regional economic recycling; sixthly, some of the aquatic products enterprises haven't got used to the requirements after we joined the WTO; seventhly, the eucalyptus planting plans are not strict, occupied too much area with inflexible management; eighthly, the bottleneck problem of hindering the development of husbandry is accentuated.

在进一步探讨研究的基础上，提出了湛江农业优势产业发展存在的主要问题，包括有（1）农业基础设施落后，抵御自然灾害的能力相对较弱；（2）农产品加工与流通仍滞后，落后于经济发展的形势；（3）农业机械化程度低；（4）种植业生产水平不高；（5）还未能实现跨产业跨区域的循环经济；（6）一些水产品出口企业不适应加入WTO后的形势要求；（7）桉树种植规划性不强、种植面积大，管理不科学；（8）制约畜牧业发展的瓶颈问题突显等。

The results showed that compared with the unburned field, species number of woody heliophilous plant seedlings increased in the burned field, mainly including seedling sprouts of Cunninghamia lanceolata, Eucalyptus robusta, Quercus fabric and Camellia oleifera.

结果表明：与未火烧林地相比，火烧迹地内阳生木本植物幼苗物种种数增加，更新苗主要以杉木、桉树(Eucalyp-tus robusta)、白栎、油茶等萌生枝为主。

The hypogeal insect pests of eucalyptus are a group of special insect pests, having made serious damages to the young plantation. To solve the problem, it is necessary to use chemicals to control the population of those insect pests. The selection of chemicals and the methods of chemical application must be appropriate so as to lighten and minimize the negative impacts of chemicals on the ecological environment.

桉树地下害虫是一类特殊的害虫群体，在造林初期的危害比较严重，此时应针对不同的害虫选用不同的化学药剂来控制其种群密度，施药时要考虑减轻化学药剂对生态环境的不利影响，应采用毒饵诱杀、根部施药等方式。

The results showed that biomass of Eucalyptus exserta stands were increscent with the increasing of stand age.It was 2.77 t/hm2 in the stand of 0.7 year and was 70.932 t/hm2 in the stand of 7.7 years.

结果表明，窿缘桉林分的生物量是随着林分年龄的增长而增加，即由造林初期(0.7 a生)的2.77 t/hm2增加到主伐期(7.7 a生)的70.932 t/hm2。

Effects of the interplanting of Tephrosia candida on nutrient cycling of eucalyptus plantation ecosystem

桉树林间种山毛豆对生态系统养分循环的作用

Adaptability of interplanting of eucalyptus plantation with white tephrosia Tephrosia candida DC.

本文研究了桉树人工林间种山毛豆的适应性及其对林木和土壤的影响。

They all had greatly increased except Eucalyptus community and Leucaena glauca community.

Wiener指数在0.39～1.49间，除桉树群落和新银合欢群落外也均有增加。

According to the study result of species selection,12 species of Eucaly-ptus and Acacia were introduced in 1993 in Yuanmou of Yunnan Province Through observing and analysing for more than 2 years and comparing the adaptability and rapidly-growing ability with Leucaena lecocephala introduced successfully before the authors found that Eucalyptus camaldulensis,A auriculiformis ,A caciamangium were the optimal afforestation species in dry-hot river valley of Yuamou This had certain significance to guide...

根据树种选择研究结果，1993年在云南元谋引种桉属和金合欢属树种12个，经两年多的初步观测分析，并与原引种成功的新银合欢比较适应性和速生性，认为赤桉、大叶相思、马占相思可作为元谋干热河谷造林的最优树种，逐步扩大栽培试验，对当地植被恢复适生树种的使用具有一定指导意义。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。