根的生长

The number of bacteria, fungi, ammonifier and nitrobacteria were positively correlated with the biomass of growing roots and absorbing roots, while the number of nitrogen-fixing bacteria was negatively correlated with absorbing root biomass.

细菌、真菌、氨化细菌和硝化细菌数量与生长根和吸收根生物量之间显著正相关；固氮菌则仅与吸收根生物量显著负相关；而纤维素分解菌与根系生物量的相关关系不显著。

So, endomycorrhiza was formed betweenD. candidum roots and strain AR-15. There were several nucleoli and nuclei in thecortical cells next to exodermis when a nucleus transfer across the cell wall wasobserved. Sometimes plant roots were damaged by strain AR-15. The microstructure of D.

真菌AR-18倾向于根生长，在根周围形成了一个包围圈，由根被细胞侵入外皮层通道细胞及其相邻的皮层细胞，然后向其他皮层细胞推进；真菌菌丝也可由皮层细胞侵入外皮层细胞。

Brown rhizomorph and hyphae can be seen on the seedlings'rhizome, main root and side root while nothing is on the tip of the root.It was found that rhizomorph on the surface of roots would die after inoculation in 90 days in pot.

子实体单生或丛生，出菇至成熟3 d~4 d，单个子实体重20.0 g~62.0 g；小粒咖啡苗的根茎、主根及侧根被茶褐色的菌索和菌膜包裹，而根尖及靠近根尖的侧根上没有菌丝和菌索生长或生长很少；盆栽小粒咖啡苗，在接种90 d后其根系表面的菌索死亡。

On the 7th and 14th day after partial dorsal root rhizotomy and acupuncture, the animals in these groups and the control group were sacrificed.

目的：探讨部分去背根及部分去背根后针刺对备用背根节神经元血小板源性生长因子表达的影响。

Stramonium root, stem and leaf were extracted with distilled water, and with the treatment with distilled water as CK, the effects of extracted liquid from D.

结果表明，0.2g/ml曼陀罗叶浸提液处理时，芝麻和粟种子萌发率分别降低83%和83.3%，幼苗的根和茎则停止了生长； 0.4g/ml曼陀罗茎浸提液使芝麻和粟的萌发率降低27.6%和15.8%，幼苗根长降低93.3%和64.7%，幼苗茎长降低51.2和18.0%。0.4g/ml曼陀罗根浸提液使芝麻和粟种子萌发率降低31.2%和56.2%，幼苗根长降低75.1和15.0%。

Horse-radish is the root of Cochliaria armoracia,-a plant native to Europe, but now grown in our own country.

辣根：辣根蜗属植物的根。原产欧洲，现生长在我们美国。

The results show that appropriate earlier sowing, drill sowing and using mycorhiza help to increase the ground diameter, the height, and the quality of the seedlings, but different shading ways have no obvious effect on the growth and quality of seedlings.

结果表明：适时早播有利于苗木地径、苗高、苗木质量的提高；单层和双层遮荫对幼苗生长影响不大，但适当遮荫有利于幼苗生长；条播、使用菌根粉的苗木明显优于撒播、不使用菌根粉的苗木。

The growth of plantlets with the height of 1-2 cm and 3-4 leaves was compared on MS basal medium containing various organic compounds, including banana, carrot, potato, coconut water, and tryptone. The result showed that the growth of oncidium plantlets was the best on medium containing banana, potato and tryptone altogether with respect to their plant height, leave number, root number, root length, fresh weight, and dry weight. The next better media were the control and the Banana medium, followed by the Potato medium.

另外取高约1-2公分，带3-4片叶片的分化小苗，培养於含不同浓度有机添加物（香蕉、胡萝卜、马铃薯、椰子水、及tryptone）的半量MS培养基，以探讨最适合文心兰瓶苗生长的培养基，试验结果显示，在同时含香蕉、马铃薯及tryptone三种成份的培养基生长的小植株不论在株高、叶数、根数、根长、鲜重、及乾重均较其他培养基为佳；不含添加物之1/2MS培养基、及含香蕉的培养基次之，而在含马铃薯之培养基较差。

In this paper five strains of Arbuscular mycorrhizal fungi inoculums were used in organic soil before tomato seed sowing.

丛枝菌根是生活在陆生植物根际的有益共生微生物，大多数作物、蔬菜、果树和观赏植物均可形成丛枝菌根共生体〔1，2〕，由于有机栽培下营养物质转化吸收不如化肥效果迅速，不能完全满足蔬菜生长需求，因此产量一般较低。

The resulted that there was an obvious rhizosphere effect in all growing years of Caranaga microphylla plantation. The pH value of rhizosphere soil was lower than those of near rhizoshphere soil at different growing years. The content of organic matter, total N and available K in rhizosphere soil were all higher than those in near rhizoshphere soil, but the content of Olsen-P in 5-age plantation was remarkably deficient in rhizosphere soil.

对不同生长年限的小叶锦鸡儿人工灌丛根际土壤变化规律研究表明，根际土的pH均小于根外土：土壤有机质、全氮、速效钾在根际土中均有一定程度的富集现象；而5年生的小叶锦鸡儿根际土的有效磷含量出现了亏缺。

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。