蓼

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。

We choose the arid land of northwestern China as our study area because of its extensive area, specific geographical location, dry climate, varied topography, vulnerable ecosystems and long-term human disturbance, as well as the existence of current conflicts between economic development and environmental protection. Based on the literature, we choose ten desert species with clear and relatively accurate geographical distribution ranges to model their distributions:Anabasis brevifolia, Atraphaxis frutescens, Calligonum mon-golicum, Ephedra przewalskii, Gymnocarpos przewalskii, Haloxylon ammodendron, Haloxylon persicum, Ka-lidium cuspidatum, Salsola laricifolia, and Sympegma regelii.

：选择面积广阔、地理位置特殊、气候干旱、地形地貌多样、生态系统脆弱以及人类活动长期干扰，而且目前面临着西部大开发和环境保护双重矛盾的西北干旱区作为研究区域，通过收集西北干旱区多种优势种和常见种的地理分布资料，选取10种分布范围相对明确、资料相对齐备的荒漠植物种：短叶假木贼、木蓼(A- traphaxis frutescens)、沙拐枣、膜果麻黄、裸果木、梭梭柴、白梭梭、尖叶盐爪爪、松叶猪毛菜(Salsola lar- icifolia)和合头草，定量分析其地理分布与气候因子的关系，并据此估测其潜在中心分布区和潜在最大分布范围，与实际分布范围进行比较。

It is nowhere muddy,and a casual observer would say that there were no weeds at all in it; and of noticeable plants, except in the little meadows recently overflowed, which do not properly belong to it, a closer scrutiny does not detect a flag nor a bulrush, nor even a lily, yellow or white, but only a few small heart-leaves and potamogetons, and perhaps a water-target or two; all which however a bather might not perceive; and these plants are clean and bright like the element they grow in.

它没有一处是泥泞的，偶尔观察的过客或许还会说，它里面连水草也没有一根；至于可以见到的水草，除了最近给上涨了的水淹没的、并不属于这个湖的草地以外，便是细心地查看也确实是看不到菖蒲和芦苇的，甚至没有水莲花，无论是黄色的或是白色的，最多只有一些心形叶子和河蓼草，也许还有一两张眼子菜；然而，游泳者也看不到它们；便是这些水草，也像它们生长在里面的水一样的明亮而无垢。

Leaves basally cuneate, truncate, or subhastate; styles 2, free, achenes nearly orbicular, biconvex.

叶基部楔形，截形或者近戟状的；花柱2，离生，近圆形，双凸。 109 P 。 dichotomum 二歧蓼

Peduncles sparsely glandular hairy or glabrous; stems and branches sparsely pubescent or glabrescent; achenes biconvex, rarely trigonous.

花序梗疏生腺毛或无毛；茎和分枝疏生短柔毛或后脱落；瘦果两面凸，很少三棱。 24 P 。 persicaria 蓼

Objective: To analyze the fatty acids from polygonum alatum Buch.

目的：研究头状蓼的脂肪酸成分。

Analgesic action of wild and cultivated Polygonun capitatum was observed by aceticacid-induced twisting test.ResultsBoth wild and cultivated Polygonun capitatum could inhibit cotton-induced granuloma of mice, and inhibit twisting response of mice obviously. In the same dose, there had no significant difference between wild and cultivated Polygonun capitatum.

结果野生与栽培头花蓼对小鼠腹腔毛细血管通透性、小鼠足肿胀、小鼠耳肿胀和棉球肉肿等炎症具有明显的抑制作用；对醋酸引起的扭体反应有明显的镇痛作用；相同剂量的野生与栽培头花蓼之间没有明显差异。

The total seed storage in topsoil (0-10 cm) was 83499-109141 indm^(-2) for natural wetlands and 9140-47452 indm^(-2) for reclaimed paddy fields. In natural wetlands, the seeds were of 16-30 grass plant species, being dominant with Polygonaceae and Cyperaceae or Cyperaceae and Gramineae; while in reclaimed paddy fields, the seeds were of 7-16 grass plant species, with the dominant of Gramineae. The seed storage and species numbers were greater in Shengjin Lake than in Shibasuo Lake. Higher seed bank storage and more species were observed in the paddy fields from Shibasuo wetland with 30 years of cultivation than from the Shengjin Lake wetland with over 50 years of cultivation.

结果表明：天然湿地种子库密度为83499~109141粒m^(-2)，而开垦为稻田30~50年后种子库密度为9140~47452粒m^(-2)；天然湿地的土壤种子库物种数为16~30种，以蓼科－莎草科或莎草科－蓼科为优势种，开垦为稻田后物种数下降为7~16种，且趋向于以禾本科为单一优势种；此外，与十八索湿地相比，升金湖湿地有较高的土壤种子库物种数、丰富度和多样性，而开垦年限为30年的十八索稻田土壤种子库物种数和丰富度显著高于开垦年限为50年的升金湖稻田。

The relationship of transpiration characters and mineral absorption of three spieces of Polygonaceae:Polygonum lapathifolium,Fagopyrum dibotrys and Rumes japonicus cultured in the eutrophic water were studied.

本文研究了富营养化水栽培下蓼科植物酸模叶蓼、野荞麦和羊蹄蒸腾特点及与营养吸收的关系。

Any of numerous plants of the widely distributed genus Polygonum, characterized by stems with knotlike joints and conspicuous sheathlike stipules.

蓼属植物一种分布广泛的蓼属植物，特征是茎干上带有球状突节和明显的套状托叶

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。