干旱

Soil drying increased the bound water and modulus of bulk elasticity , but decreased the ratio of weight at full turgor: dry weight , osmotic potential at turgor loss point and relative water content at turgor loss point .

3土壤干旱增加了植物细胞的束缚水含量、细胞壁弹性模量系数，降低了水分饱和状态下的重量与叶片干重的比率、细胞发生质壁分离时的渗透势以及此时的细胞相对含水量。

Thicketization of grassland is considered a deformation of a resource island under perennial grass tussock in conjunction with the formation of resource island under shrub-thicket.

结合半干旱草原中资源岛的形成机制，讨论了草原灌丛化作为多年生禾草草丛资源岛不断解体，同时灌丛资源岛不断形成的过程。

In order to deeply understand biomass formation for Panicum virgatum in the semiarid loess hilly-gully regions, we investigated the biomass production, ramet generation, and resource supply and demand at the plot and tussock scales during the yearly life cycles of two switchgrass species, i.e. early-maturing and late-maturing ones, respectively.

为深入认识半干旱黄土丘陵沟壑区引种能源植物柳枝稷生物质生产的开发潜力及其约束机制，调查了农田、植丛尺度上早熟和晚熟柳枝稷年度生命周期内生物量累积、分株建成动态，以及土壤水分供求平衡过程。

The result indicated: The drought and the waterlogging caused by excessive rain disaster are create the local grain underproduction the main meteorological disaster.

结果表明：干旱和雨涝灾害是造成当地粮食减产的主要气象灾害。

Do not be able to bear or endure arid barren soil, avoid saline-alkali soil and ground of waterlogged be soiled, cultivated cross wet land undesirably at catchment, can cause grow decay of undesirable, root system, lamina falls off, cause death of entire individual plant finally.

不耐干旱瘠薄土壤，忌盐碱土和涝渍地，栽植于排水不良的过湿地，会造成生长不良。根系腐烂。叶片脱落，最终导致全株死亡。

From the tests,we have obtained some structural variant features related with salt resistance and demonstrated the successful introduction of Rhizophora apicularta DNA into tomato.This thesis contains two parts. In the first part,the morphological and anatomical structures of the leaves were investigated. As to the morphology,some difference between control and transformed tomato were found. The leaf dimensions of the transformed tomato with unextended leaves were smaller than that of control. These structure changes should help to decrease the evaporation of water effectively and release the physiological drought resulted from saline.

本实验分两部分：第一部分、对转化番茄的形态及细胞显微结构进行观察与分析，实验表明转化番茄形态与对照相比有明显的变化，其叶面积变小，叶形收拢，这种结构可有效地减少水分的蒸发，缓解由盐胁产生的生理干旱；组织解剖结构结果显示，耐盐番茄在细胞结构上发生了明显的变异：其气孔器倾向下陷，表皮毛增多，叶脉微管组织不发达，微管束周围出现增多的贮水细胞，叶缘及其它部位表面分化出大型的多细胞分泌型结构，这些结构与转化番茄后代较强的耐盐能力有关。

Initial causes of the late 2006 price rises included unseasonable droughts in grain producing nations and rising oil prices.

导致2006年后期价格上涨的最初原因是谷物生产国非季节性的干旱以及上涨的石油价格。

Our measurements show that significant amounts of the chemical can be detected in the atmosphere as plants respond to drought, unseasonable temperatures, or other stresses.

我们的测量结果显示植物在应对干旱、不正常的温度，或者其它压力时，可以在空气中探测到大量的该化学物质。

"Our measurements show that significant amounts of the chemical can be detected in the atmosphere as plants respond to drought, unseasonable temperatures, or other stresses."

他还说，我们的测量显示，当植物面对干旱、不合季节的气温或其他压力下，在大气中会有相当数量的这种化学物质。

Unseasonably dry and windy conditions have charred more than 53,000 acres and destroyed 10 homes in southeastern New Mexico in recent weeks.

他还透露说，最近几个星期以来，异常的干旱大风天气引起的草原大火已经烧焦了新墨西哥州南部5.3万英亩的土地，有10户人家的房屋被毁。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。