查询词典 Trifolium

In order to ascertain the allelopathy activity of Trifolium repens on weeds, the allelopathic effect of aqueous extract from the aerial part and root of T. repens under different concentrations on the germination rate, physiological and biochemical mechanism of germinating seeds of Abutilon theophrasti Medic.

为进一步明确白三叶草对杂草的化感作用，研究了不同浓度的白三叶草地上部分水浸液和根部水浸液对苘麻和稗草种子发芽率和种子萌发过程中生理生化机理的影响。

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。

The sixteen plants are firstly divided into six types according to evaluation grades and subject function statistical method:the first type is Cajanus cajan and Crotalaria mucronata,the best adaptability ,which can be used pioneer plant or constructive species; the second type is Cynodon dactylon,the better adaptability, which can be used constructive species ;the third type is Eragrostis curvula, Paspalam notatum,which can be used constructive species on rotten rock slope ; the forth type is kummerowia striata,Lotus corniculatus and Vitex negundo.The adaptability is centered,and can be used protection species and auxiliary species;the fifth type is Robinia pseudoacacia,Eremochloa ophiuroides,Vitex negundo,Lespedeza formosa,Leucaena leucocephala,Desmodium sequax, Rhus chinne- nsis,which can't be plant singly and be used accessory species;the sixth is Trifolium repens,which can be used pioneer plant.

根据评价边坡防护植物适应性的十个重要指标，首次运用隶属函数和聚类分析方法，对各供试植物的边坡适应性综合排序并分为六类：第一类为木豆和猪屎豆，边坡适应性最强，适宜作为先锋植物和建群种；第二类为狗牙根，边坡适应性强，适宜与豆科植物混播，作为建群种；第三类为弯叶画眉草和百喜草，边坡适应性较强，适宜与豆科植物混播，作为风化岩边坡的建群种；第四类为鸡眼草、百脉根和马棘，边坡适应性中等，适宜作为保护种与伴生种；第五类为刺槐、假俭草、荆条、美丽胡枝子、银合欢、波叶山蚂蝗和盐肤木，边坡适应性较差，不宜单独在边坡上种植，最好与速生型豆科草本混播，作为边坡防护植物群落的辅助植物；第六类为白三叶，边坡适应性最差，但因其出苗率高、生长速度快，作为先锋植物，起到前期覆盖坡面的作用。

Persistence of grazing mixed pasture has been a key issue in environment conservation and sustainable utilizing of resources in karst region. Under moderate grazing with Corriedale sheep, the productivity and botanical composition of Trifolium pratense mixtures were studied over a 20-year period in karst region of southwest China. Four mixtures consisted of Trifolium pr...

用考力代绵羊轮牧，在牧前和牧后草地现存量(干物质，DM，drymatter)分别为1800~2500(草层高15~18cm)和900~1200kg·hm-2(草层高3~5cm)的适度放牧利用条件下，对亚热带最常见的豆科牧草红三叶与禾本科牧草的两两混播草地的群落生产力和持久性开展长期研究。20年的结果表明：适度放牧利用下，群落地上总生物量长期稳定，各组合间差异不显著，总盖度20a后仍高达97%以上；适度放牧有利于牧草的生产力持久性，红三叶、鸭茅、多年生黑麦草和黑穗画眉草都在群落中长期存在；群落净产量和持久性是尺度依赖的，群落长期净生产力以红三叶+鸭茅的最高(DM产量353.3g·m-2·a-1)(P.05)，对杂草侵入的抵抗力最强，而前10a红三叶+多年生黑麦草有很高的净生产力DM产量449.8g·m-2·a。。。

The deduced amino acid sequences of HbHDT1 showed high identities (65％, 59％, 50%, 45%, 43％ and 40%, respectively)to those of the histone deacetylase from Ricinus communis, Populus trichocarpa, Solanum chacoense, Trifolium pretense, Glycine max and Triticum aestivum.

该氨基酸序列与蓖麻、毛果杨、马铃薯、红花苜蓿、大豆、小麦的HDACs家族成员的同源性分别为65％、59％、50％、45％、43％和40％。半定量RT-PCR分析结果表明HbHDT1在巴西橡胶树的花、愈伤组织、胚、叶、芽、胶乳中均有表达。

Under natural water stress, we studied the effects of.41ternaria tenuis Nees colonization on the physiological and biochemical characteristics that were related to the drought resistance of Trifolium repens L..

在盆栽自然水分干旱胁迫条件下，研究了接种链格孢菌对白车轴草（Trifolium repens L。

In this paper, the chemical constituents and quality of Trifolium pratense L.

本论文对红车轴草和川续断的化学成分及质量进行了系统的研究。

Fertilization is very important to the yield and quality of Trifolium pretense, but the effect of fertilization always ignored.

施肥对红三叶产量和品质的形成有较大的影响，而实际生产中往往忽视了肥料对牧草的作用。

Trifolium pretense is a kind of forage grass that of high utilization value.

中文摘要：红三叶是一种利用价值很高的牧草。

Extraction technology of isoflavones in Trifolium pratense was studied by single factor and orthogonal experiment.

本文通过正交试验的方法，对结果采用Hplc检测，着重考察红车轴草异黄酮的提取各种试验条件，筛选出得率和纯度都较高的方法，以每次所得到的总异黄酮质量的多少来衡量方法的好坏。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。