繁

This weed population had a wider niche breadth, the second widest among 12 major weed populations in weed community, and had bigger niche overlap with Stellaria alsine, Alopecurus acquallis, Malachium aquaticum, Poa annua, Polygonum persicaria and Lapsana apogonoides. In rape, wheat or fallow, B.

在杂草群落中，草的生态位宽度居第2位，说明其有潜在的较强的适应环境的能力；草与雀舌草、看麦娘、牛繁缕、早熟禾、春蓼和稻搓菜等杂草种群的生态位重叠较大，与它们的生态要求比较接近。

The internationally recognized company form of Bitzer SE will make it possible for us to handle our foreign activities less bureaucratically and more quickly, and is a consistent step in our corporate development.

国际公认的比泽尔公司的运作方式让我们能够以更少繁冗拖沓的官样作风、更快捷的方式处理我们的对外业务，是我们公司始终如一的发展步骤。

The apical buds of Celosia cristata were used as the explants for the rapid propagation to compare the mutagenic effects treated with colchicines at different concentrations and time duration in tissue culture.

以鸡冠花顶芽为外植体，研究其离体快繁程序并在无菌体繁殖条件下探索了秋水仙素溶液不同浓度和时间处理对鸡冠花的诱变效应。

Vitrification, chlorosis, scale-shaped differentiation and failure to root of regenerated shoots frequently occur in industrialized production of tetraploid watermelon Citrullus vulgaris L.

西瓜四倍体工厂化生产中存在试管苗玻璃化、黄化死亡、鳞片状分化、不生根等不利问题，在MS中NH4NO3 含量减半的情况下，前两者可得到有效的控制；用连续增殖、连续壮苗的方法，解决了西瓜四倍体鳞片状分化的难题；用茎尖扩繁的最佳培养基为MS(含半量NH4NO3 )+2 。

This paper presents a study of Eucalyptus dunnii tissue culture, using its seeds as explants. The results reveal that MS medium is a suitable basic medium for its seeds to germinate and grow; that MS+KT1.0 mg/L+2, 4-D2.0 mg/L+Homocysteine30mg/L is a good medium to induce its seeds to dedifferentiate directly into callus; that H+6-BA2.0 mg/L+IAA0.2 mg/L is a good medium to make its bud on the seedling reproduce more buds; that MS+6-BA2.0 mg/L+NAA0.2 mg/L is a better medium to induce its root on the seedling into callus; that B5+6-BA2.0 mg/L+2, 4-D0.2 mg/L can induce its under-hypocotyl to differentiate into buds; and that B5+Ad2.0 mg/L+IAA0.2 mg/L can induce its under-hypocotyl into callus to generate normal buds.

以邓恩桉种子为外植体，探讨用最少种子快速繁殖最多幼苗的方法，结果表明：MS培养基是较适合邓恩桉种子萌芽和生长的基本培养基；诱导种子直接脱分化成愈伤组织的较佳培养基配方为MS+KT1.0 mg/L+2，4-D2.0 mg/L+半胱氨酸30 mg/L；以邓恩桉实生苗的芽来繁芽的较理想培养基配方为H+BA2.0 mg/L+IAA0.2 mg/L；邓恩桉实生苗的根诱导愈伤组织的较佳培养基配方为MS+6-BA2.0 mg/L+NAA0.2 mg/L；诱导邓恩桉下胚轴分化芽较佳培养基配方为B5+6-BA2.0 mg/L+2，4-D0.2 mg/L；诱导邓恩桉下胚轴脱分化为胚性愈伤组织的较佳培养基配方为B5+Ad2.0 mg/L+IAA0.2 mg/L。

Dendrocalamus brandisii,an excellent bamboo species,has been extended in many adapted areas in china,and the main propagation method is to transplant by clone.

勃氏甜龙竹是一种优良的多用途竹种，近年来在许多适生区得到推广，其资源扩繁主要依赖于母竹移植。

Diospyros kaki Thunb cv.Fuyu and Jiro are Japanese persimmon varieties. Dormant buds taken from persimmon trees, as in vitro explants materials, were set up successfully. New shoots were attained. Callus was induced and adventitious buds were differentiated from leaves and roots of tissue cultures; new shoots propagation and shoots rooting were studied in different basal medium added different hormones.

本研究以甜柿品种富有柿与次郎柿为材料，系统地研究了两品种的组培快繁、组培苗叶片和根段的不定芽再生、愈伤组织的诱导和不定芽的分化、不定根的诱导等技术，以期为柿果的转基因技术奠定基础，同时也为富有柿与次郎柿苗木的快速繁殖提供技术依据。

It is an important but difficult job to compute the transmission ratio and the meshing efficiency of epicyclic gear trains.

周转轮系传动比与啮合效率(只考虑轮齿啮合摩擦损失)的计算方法卜3 J较多，但都比较沉繁。

But goe with speed, And what thy stores contain, bring forth and poure Abundance, fit to honour and receive [ 315 ] Our Heav'nly stranger; well we may afford Our givers thir own gifts, and large bestow From large bestowd, where Nature multiplies Her fertil growth, and by disburd'ning grows More fruitful, which instructs us not to spare.

快去拿出你所贮藏的东西来，用最好的果品，丰盛地款待这位从天上来的贵宾。拿礼物回赠送礼物的人，要从众多的礼品中，多拿一些来，这儿的'自然'肥沃，万物繁生，愈是采摘，愈是果实累累；那就是教导我们不必过分节俭。

Direction as theory of modren foresty and biotechnology, Based on the Breeding of superior clones, culture medium prescription of tissue culture and photoautotrophic micropropagation for the main species of industrial raw material forest and flower of Fujian were selected, and the sivilcuture model for the main species of industrial raw material forest were comfirmed, and the assistant Forest Management System for the main species of industrial raw material forest and flower of Fujian were established.

以现代林业理论及生物技术为理论指导，在优良无性系选育的基础上，筛选出相思树种等我省工业原料林主要树种及花卉优良品种组织培养、光自养植物微繁技术的培养基配方及轻质专用容器苗基质；确定了环境友好型的工业原料林主要树种栽培模式，建立了相思树种等我省工业原料林辅助经营管理系统。

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％。