长根的

It,s allelchemicals were isolated through extraction, thin-layer chromatography, and column chromatograpathy. After the white clover was infused in ethanol and evaporation, the leavings was dissolved by water. The aqueous extract was extracted by petroleum,chloroform, ethyl acetate and n-Butanol successively, and the bioassay showed that the chloroform phase has obvious inhibitory effect, the inhibitory rate was 44.32%,88.08% on Abutilon theophrasti M., seedling length and root length, 82.08%,92.16% on Echinochloa crusgalli L., seedling length and root length, and the Amaranthus retroflexux L., germination rate is 0, the secondly was ethyl acetate phase.

运用萃取、薄层层析、柱层析等方法对白三叶草地上部分的化感物质进行初步分离，结果表明，白三叶草经乙醇浸提旋转蒸发后用蒸馏水溶解，依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取，生物测定表明氯仿组分对杂草的抑制作用最强，对苘麻芽长和根长抑制率分别为44.32%、88.08%，对稗草芽长和根长的抑制率分别为82.08%、92.16%，反枝苋的发芽率为0；其次是乙酸乙酯相。

Education Min law is measured so that tea-oil tree water extracts content bud pre-treatment long, root grows careless to barnyard grass germination percent, bine and the IC50 of the chroma in restraining of bright quality is respectively 0.22, 0.36, 0.11 with 1.19 G/mL(bright quality, similarly hereinafter), cannikin law is measured so that long to the bine, root grows bud aftertreatment to be respectively with the IC50 of bright quality 0.17, 0.05 with 1.80 G/mL, show tea-oil tree water carries content to be had to barnyard grass grass weed active.

培养皿法测得油茶水提取物芽前处理对稗草种子发芽率、茎长、根长和鲜质量的抑制中浓度IC50分别为0.22、0.36、0.11和1.19 g/mL，小杯法测得芽后处理对茎长、根长和鲜质量的IC50分别为0.17、0.05和1.80 g/mL，表明油茶水提物对稗草具有除草活性。

The results were as follows:The embryo-bud length, embryo-shoot length, embryo-shoot number and dry weight of embryo-shoot of maize inbreed line decreased evidently under osmotic stress within germinating period. So the germination date was delayed, the germination rate and viability decreased.

研究结果如下：在萌发期渗透水分胁迫条件下，玉米的胚芽长、胚根长、胚根条数、胚根干重等均有明显的下降，因而发芽时间延迟，发芽率下降。

The plant height is 35 cm and the plant spread is 48 cm. The plume-like leaf cluster is semi-uprush with small tassel. The leaf color is deep green, but the leafstalk is light green and leave numbers per single plant are 10-12. Its fleshy root is of long column shape with rootlet, little fibre and deep green peel. The length is 26-32 cm, the diameter is 8-12 cm and the weight could reach 2-3 kg. The flesh is light green, with delicate and slight pungent taste. And its dry matter content is 7.0%, VC 209 mgkg^(-1), soluble sugar 3.27 % coarse fibre 0.65%. Besides,'Weiluobo No. 1' had high resistance to virus, resistance to downy mildew, stronger resistance to bacterial soft rot than 'Luluobo No.

生长期80d左右，植株生长势旺盛，株高35cm，开展度48cm；叶簇半上冲型，羽状裂叶，小缨，叶深绿色，叶柄淡绿色，单株叶片10~12片；肉质根长圆柱形，小顶小根，须根少，表皮深绿色，仅1/3入土部分为白色，肉质根长26~32cm，横径8~12cm，肉质根质量2~3kg；肉淡绿色，肉质细嫩，干物质含量7.0%，VC209mgkg^(-1)，可溶性糖3.27%，粗纤维0.65%，微辣，品质佳，适于熟食；高抗病毒病，抗霜霉病，对软腐病的抗性优于对照鲁萝卜1号。

Analyzed the effect factors of Abies fabric root system strength,of which the root diameter and root length are the important effect factors, the interaction of root diameter and root length bring on the strength of Abies fabric root system.

分析了影响冷杉根系侧强曲线的因素，其中冷杉根系的根径和根长为影响其侧强曲线的主要因素，根系的抗拉强度的大小是根径与根长共同作用的结果。

When the Agropyron seeds were treated with 1.0kv.cm-1,the seedling rate,seedling length and root length increase by 4.5%,81% and 48% respectively,and treated with 4.5kv.cm-1,the seedling rate,seedling length and root length increase by 4.8%,84% and 66% respectively.

结果表明：不同电场对冰草种子萌发及幼苗生长产生不同的影响，用1.0 kv/cm电场强度处理冰草种子10 min，可提高种子出苗率4.5%，苗长增长81%，根长增长48%；用4.5 kv/cm电场强度处理冰草种子10 min，可提高种子出苗率4.8%，苗长增长84%，根长增长66%。

In the horizontal direction,most of effective root for Black Locustdistributed in 30cm～90cm from stem basal,but it for Arborvitae distributed in 0～30cm.

其中，刺槐有效根长占总有效根长的51.58％，侧柏占58.38％；刺槐有效根干重占总有效根于重的63.01％，侧柏占71.09％；在水平方向上，刺槐有效根系密度呈二次抛物线型分布；侧柏则随距主干距离的增大而减小。

Vent were studied in this experiment based on scanner-based image analysis. The results showed that drought and AM inoculation had a large, significant effect on plant development. Biomass, total length, surface area, volume, number of root nodes, average diameter and fractal dimension of root system in Broussonetia papyrifera Vent decreased with the reduction of soil moisture, while they were increased by AM inoculation. Special root length in non-AM plants increased when soil moisture was reducing, but it was decreased by AM inoculation.

结果表明，土壤水分状况和接种菌根真菌对构树幼苗生物量积累产生了显著的影响；构树幼苗根系干重、总长度、表面积、体积、根节数目、根系平均直径和分形维数表现出随着土壤含水量的降低而降低，接种G.mosseae则使得该参数比同等水分条件下显著升高；未接种植株比根长SRL表现为随着土壤含水量的降低而升高，接种G.mosseae则降低了同等水分条件下构树幼苗的比根长；土壤水分和接种G.mosseae同样也对根节平均长度产生了影响。

Result Galium aparina water extract had some effects on the germination rate, roots length, stem length and fresh weight. The water extract decreased the germination rate and roots length of the 3 vegetables, but its effects on the stem length and fresh weigh was variable in different species.

结果］猪殃殃水提液对3种蔬菜的发芽率、根长、茎长、鲜重都有一定的影响；对发芽率、根长均表现为抑制作用，对茎长和鲜重的化感作用则因物种不同而不同。

RESULTS: After root canal preparation, the mean value of the angles of canal curvature decreased from 36.21° to 21.98°, while the mean value of the radius of the canal curvature increased from 6.25mm to 11.35mm; the canal axes transported and intercrossed with the original axes at 2 points and created 3 intersection zones.

结果：根管预备完毕，根管弯曲角度均值从预备前的36.21°逐渐减小至21.98°，弯曲半径均值从6.28mm增大至11.35mm；根管长轴发生了偏移，与预备前原根管长轴形成2个交点，3个相交区。

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。