旱

The corn hybrid species of Haiyu4 was used as experiment materials. The dynamics regulations of main physiological parameters were studied in this experiment, in which it was subjected to drought stress at different growth stages, different holard and irrigation before seeding.

本试验以海玉4号玉米杂交种为试材，通过不同土壤重量含水量及不同坐水量处理，不同生育时期干旱胁迫处理，并通过对相关生理指标和产量及籽粒品质的测定及分析，探讨春玉米主要生理指标的动态变化规律，为北方春玉米旱作栽培及节水灌溉提供理论依据。

In addition, homochronous physics field configure between upper layer and lower layer wasn't propitious to rainfall in North China in dry year . In wet year, the situation was opposite .

另外华北旱年同期高、低层物理量场的配置不利于降水形成。

With the deflected succession of aquatic ecotype plant functional group,the dominance of mesophytes and xerophytes increased,while the dominance of aquatic and hygric plants decreased. However,there are only planting crops in the reclaimed wetland. In the composition of plant biotype functional group,the hydrophytes reduced quickly with the deflected succession and the dominance of perennial herbs is mostly marked,and there are only annual herbs in reclaimed wetland. Compared with primary swamp,the species diversity index of meadow is the highest,the swampy meadow follows,and the reclaimed wetland is the lowest.

植物的水分生态型功能群组成随湿地的逆行演替，水生、湿生类植物功能群的优势度不断减少，中生、旱生类植物功能群的优势度逐步增加，而在垦后湿地只有农作物；植物生活型功能群组成随湿地的逆行演替，水生草本迅速减少，陆生多年生草本增加占据优势，而在垦后湿地均为一年生草本；湿地植物物种丰富度、多样性指数由原生沼泽、沼泽化草甸到草甸依次增加，草甸为最大值，而垦后湿地则最低。

Flooding,as a kind of disturbance events,occurred with higher and higherfrequency over the world.To investigate the effects of flooding disturbance ongrassland vegetation and the soil,a comparatively thorough study was conducted onAneurolepidium chinense grassland in Songnen plain,Northeast China.The studysite was located in Sanjiadian National Rangeland in the territory of Da'an city,Jilirprovince,which was partly flooded in 1998.On the study site,Several transectssubjected to different flooding durations and intensities were designed for thecomparative study among them on such aspects as vegetation characteristics,seedbanks,vegetative propagation of rhizomatous plants,distribution patterns ofpopulations,interspecific relations,and physio-chemical properties of soil.Theresults were as follows:(1)Of the functional group composition of the vegetation,with the elongation of the flooding duration or the increase of flooding severity,theratio of hygric and hygro-mesic plants increase,while that of mesic and mesoxericplants decrease,of Therophytes changed unimodally,of Geophytes increased,whileof Hemicryptophytes decreased.

为弄清草地植被及其土壤环境对水淹干扰的响应，在松嫩平原羊草草地1998年部分遭受水淹的吉林省大安市三家甸子草场内设置了经历不同水淹干扰持续时间和不同水淹强度的样带，并在这些样带之间从植被特征、种子库特征、根茎植物的营养繁殖性能、种群分布格局、种间关系及土壤的理化性质等多个方面展开对比研究，主要结果如下：(1)在植被的功能群组成中，随干扰强度的增加和水淹干扰持续时间的延长，湿生、湿中生类植物功能群的优势度比例基本上是逐渐增加的，中生、中旱生类植物功能群的优势度比例则逐渐减小，而一年生植物的优势度比例呈单峰型变化，地下芽植物比例增加，地面芽植物比例减小。

According to "Biyang County" records; Imperata blocking, majestic mountains, rushing Central mountains, rainy days, there is fog, mountain after Lungtan, traditionally lived in the mountains white Daisen, every-year-old drought, rural people are in the rainmakers , whatever they ask for.

据《泌阳县志》记载；白茅堵，山势雄伟，俯环群山，天阴雨必有雾，山后有龙潭，相传山上住有白毛大仙，每逢岁旱，乡人皆在求雨，有求必应。

The time of peak value of low frequency u wind isprior to the peak of rainfall in flood years;(3) There are low frequency OLRmoves northward at low-latitude and southward at mid-latitude at the same time inflood years , the join point is between 20-30 N.

3涝年低频OLR在经向上同时存在由低纬度向北和由中高纬向南的传播，二者交汇在20～30°N之间。旱年则没有显著的汇合区。(4)影响我国东部的低频气旋和反气旋源地在北半球中纬度太平洋和低纬的菲律宾附近。

The results showed that there were significant differences among parameters of texture feature of the different land utilization. In the desertification, the mean and variance were comparatively high. The gray level was asymmetry, the contrasts between neighboring pixels were significant; while in water and irrigable land, the mean, variance was a little bit low, the grey level was symmetry; the mean, variance and gray level in the forest and dry land was between the above (desertification and water and irrigable land).

不同土地利用类型之间纹理特征参数差异明显，荒漠化土地的均值、方差值较高，灰度分布不均匀，相邻像元反差明显，内部变化剧烈；水体和灌溉耕地的均值、方差值很低，灰度值均匀，内部变化小；林地和旱耕地信息介于上述两类土地之间。

The worst drought in Beijing continues in these years, since 2006, the corn production method shifted from irrigable cultivation to rained dry field cultivation, which brought the changefully items during the breeding period by taking advantage of natural precipitation, plus the unsuitable way of corn selection, these items will cause the reduction production of corn.

近年来北京地区持续干旱，自2006年起玉米生产开始由灌溉栽培转向雨养旱作生产，随之带来利用自然降水播种导致播种时期的不确定性，品种选择不当将导致严重减产，品质大幅下降。

Current temperature in Kroner is 45 degrees.

赫门：又是一个乾旱的日子，目前柯诺的温度是45度。

Secondary veins 10–14 on each side of midvein, straight and nearly parallel; inflorescences umbelate, 2- or 3-flowered; pedicel 1–2 cm; sepals nearly as long as hypanthium, apically laxly serrate.

次脉10-14在中脉两边各，直接和近平行；花序umbelate，2或3花；花梗1-2厘米；萼片近等长托杯，顶部稀松的有锯齿。 27 C。 subhirtella 大叶旱樱

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。