根的生长

In the broad-leaved Korean pine climax forest, the fine root climax production of the community occurs in July and October, but the dominant arboreal species, understory arboreal species and fine roots of grass have a different production dynamics. It is important to sort the fine root species because accurate fine root production sources have a different fine root dynamics.

在原始阔叶红松林中，群落细根的生长高峰发生在7月和10月，但其中主要树种、其他木本和草本的细根有着不同的生长动态，所以在计算细根生产量时应该分类计算，才会得出较为准确的结果。

The study is carried out that the comparison of fine root production, decomposition and distribution along with Korean pine and broad-leaved climax forest succession; the fine root contribution to the belowground C and N storage along with Korean pine and broad-leaved climax forest succession; and the comparison of belowground C and N storage among the Korean pine and broad-leaved climax forest, three dark-conifer forests, a betula ermanii forest along altitude.

研究内容包括：原始阔叶红松林及其不同演替阶段的次生林中细根的生长和周转、分解与分布的特征，阐明在不同演替阶段细根的变化；原始阔叶红松林及其不同演替阶段的次生林中细根对根系、土壤和林地地下的碳、氮贮量的影响，分析在不同演替阶段细根周转对地下碳、氮贮量的贡献；以及对不同垂直海拔高度分布的不同类型的原始森林中细根和根系生物量的变化，及细根对根系、土壤和林地地下碳、氮贮量的贡献进行了研究。

The organic materials and N fertilizer application decreased the ratio of dry matter distribution in ligneous roots and increased in fine roots.

三种类型根系中，施肥对细根刺激作用大于木质根，其中氮肥对生长根的作用较大，而有机物料则主要影响吸收根的生长。

In this study, 30 mgL^(-1) Zn treatment promoted the growth of root and increased zinc content and accumulation in root. If plumule was concerned, 60 mgL^(-1) Zn treatment was beneficial to their growth and zinc accumulation.

Zn30处理有利于根的生长，能显著提高根中Zn的含量并促进Zn在根中的积累；Zn60处理有利于芽的生长，能显著提高芽中的Zn含量并促进Zn在芽中的积累。

Fertilizing date presented obvious effects on root growth and distribution. Fertilization after watering was more primitive to the root in up-soil layers than before watering. Fertilization of Ca-Mg was positive to the increase of root in 5-15cm soil layer, but negative to that in the surface layer. Both fertilization date and Ca-Mg fertilizer affected root vigor obviously.

施肥时期对根系也具有明显的影响，与灌水前施肥相比，灌水后施肥有利于促进根系在上层土壤中的生长和分布；钙镁肥的施用能增加5~15cm土层根重，但对表层根的生长不利，施肥时期和钙镁肥施用与否对根系活力的影响也较大。

Result］ The extracted liquid from D. stramonium could decrease the germination rates of 4 vegetables and the seed germination of tomato and pepper. After treatment by 0.2, 0.4 g/ml extracted liquid , the seed germination of tomato and pepper were decreased by 10.2％, 9.4％ and 46.7％, 34.7％ than that of CK resp. The extracted liquid at 0.2 g/ml could inhibit the growth of vegetable root, but had some promotion on growth of vegetable stem. The extracted liquid at 0.4 g/ml had the strong inhibition on the growth of vegetable root, but its inhibition on growth of vegetable stem was greatly variable in different species.

结果］曼陀罗浸提液可降低4种蔬菜种子的发芽速率，降低番茄和辣椒种子的发芽率；0.2、0.4 g/ml曼陀罗浸提液处理后，番茄和辣椒种子的发芽率分别比对照降低了10.2％、9.4％和46.7％、34.7％。0.2 g/ml曼陀罗浸提液抑制蔬菜根的生长，而对茎的生长却表现出促进作用；0.4 g/ml曼陀罗浸提液对蔬菜根的生长有很强的抑制作用，对茎段生长的抑制作用因物种不同而有很大差异。

The results showed that the growth of root tips in liquid medium was better than that in agar-solidified medium and solid-liquid two phase medium, for that increasing agar concentrations in medium will reduce the root growth; darkness was beneficial for Fraxinus mandshurica root tip culture in vitro; as the carbon sources, sucrose was better than glucose and maltose as the carbon ...

结果表明，不添加琼脂的液体培养基对根尖的生长较添加琼脂的固体培养基和固—液培养基好，原因是增加琼脂的量会抑制根的生长；暗培养比光培养更有利于水曲柳离体根尖的培养；蔗糖作为碳源的效果较果糖和麦芽糖好，其中以3%的蔗糖对离体根尖的生长效果最好。

Root,immunoassay of ELISA(enzyme linked immunosorbent assay) was employed to determine IAA concentration in root tip, unilateral application of agar block containing IAA on root tip was carried out to investigate the effect of exogenous IAA on phototropic response.

为了研究生长素在水稻根负向光性反应中的作用，用含有IAA的琼脂块贴附在种子根的根尖表面观测IAA对根的生长效应，用ELISA法测定根尖的IAA含量，并对种子根弯曲部分进行半薄切片，结果表明：(1)种子根的生长方向既受光的调控也受外施的IAA的调控，根尖向贴有含IAA琼脂块的一侧弯曲生长；(2 )不定根在光照 1.5h后，背光侧的IAA含量明显大于向光侧；(3)种子根尖发生弯曲生长是伸长区的细胞不均等生长所致。

During root primordia initiation,large amount of starch depleted,the amount of protein,free amino acids and peroxidase activity increased.

在根原基形成时，淀粉大量消耗，蛋白质和游离氨基酸含量增加，过氧化物酶活性增强；而在根原基形成后根的生长过程中，淀粉含量回升，蛋白质、游离氨基醚含量和过氧化物酶活性下降。

The optimum temperature for 1601—L—1 growth was at 25℃. More than 35℃, hairy root growth and cell division were heavenly stopped.

最适合于发根生长的温度为25℃，大于35℃显著地抑制发根的生长，影响发根的根尖细胞的正常分裂。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。