根系

The research result as follows. 1. The allelopathic effects of aqueous extract, volatile oil and root exudates of White clover (Trifolium repens L.) were studied on four crops: Abutilon theophrasti Medic., Echinochloa crusgalli L.

研究结果如下： 1、以稗草、反枝苋、苘麻和白三叶草自身为受体，对白三叶草地上部分水浸液、挥发物和根系分泌物的化感作用进行生物测定。

In Denmark, a study showed that the root system is the presence of acetylene gas, it is estimated that also inhibit the growth of other species.

在丹麦，有研究表明，其根系有乙炔气体的存在，估计也有抑制其他物种生长的作用。

But a further research of interaction mechanism among HCT's rhizosphere, actinomyces and Cadmium, is needed.

并且在鱼腥草根系和微生物的联合作用下，土壤微生态系统能够保持较好的稳定性。

The underground root systems and the plenty of adventive roots growing on basis trucks can greatly reduce soil erosion by reservoir water. The 1 m×1.5 m allocation density of the Salix viminalis showed the best protection, and sediment yield was 8.64 kg/m^2, which decreased 74.38% compared to CK.

柳树根系及主干基部长出的大量不定根，可减缓水库水流对滩地土层的冲蚀，以青刚柳1m×1.5m密度配置的防护效果最好，冲蚀量仅8.64kg/平方公尺，比对照减少74.38%。

Wetland plants have a series of physiological and anatomical characteristics to adapt flooding habitat, e.g., their root aerenchyma and oxygen-penetrating capability can make the rhizospheric micro-environment be under oxidation condition, resulting in the formation of Fe/Mn plaques on root surface.

湿地植物具有一系列生理和结构上适应浸水环境的特征，如根系的通气组织和渗氧能力，这使得植物根际微环境处于氧化状态，这样土壤中的铁和锰会在植物根表被氧化而形成红棕色的铁锰氧化物胶膜。

Hydrophytes show certain adaptations to such habitats, notably development of aerenchyma, reduction of cuticle, root system, and mechanical and vascular tissues, and divided leaves.

水生植物表现出适应水生的特性：具有发达的通气组织；表皮、根系、机械组织、维管组织退化；叶片分裂；叶片、根和茎中均具有通气道或气腔。

With sod culture in orchards as background and the native arbuscular mycorrhizal fungi in orchard soil as target, the influences of Stylosanthes gracilis, Ageratum conyzoides and Paspalum notatum on the growth and community structure of AM fungi were investigated.

以果园生草栽培为背景，果园土壤中土著AM真菌为研究对象，考察了柱花草、百喜草和藿香蓟对与之根系共生的AM真菌的生长与群落结构的影响。

The new planting techniques promoted root growth, vegetation cover, and biomass and seed production compared with the conventional planting technique. This suggests that the air brick technique is more suitable for the study area, where the natural soils are thin, and may prove suitable for similar areas elsewhere in the world.

研究结果显示，与传统的栽培技术相比，该技术有效促进了植物根系的生长发育、改善了边坡植被覆盖度、增加了坡面植物生物量和种子产量，非常适宜土壤瘠薄的湿润山区公路两侧陡壁绿化和植物重建，同样也适宜世界上类似地区公路两侧绿化和植物重建。

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。

Ethanol is a product of anaerobic respiration in plants, and waterlogged roots suffer from a shortage of oxygen.

乙醇是植物无氧呼吸的产物，水淹的植物根系受到短时间的缺氧。

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。