干旱期

Seed vigor and drought resistance of three perennial forages belong to Bromus (Bromus ciliatus, Bromus inermis, Bromus ircutensis) in the period of seed germination were compared under PEG-6000 of different levels drought stress.

用不同浓度的PEG-6000溶液模拟干旱胁迫，比较雀麦属3种多年生牧草（缘毛雀麦、无芒雀麦、沙地雀麦）种子萌发期的种子活力与抗旱性。

The comprehensive evalucation resulted in a strong drought resistance group including ZXY04P-201、ZXY03P-227、ZXY03P-122 and ZX Y04P-136, a weak drought resistance group including ZXY04P-101、ZXY04P-89,ZXY04P-239 and a intermediate group including the others according to the the above indicators. 3. The results of study on drought mechanism for 4 Dactylis glomerata L. under continuously water stress and rewatering show: the water saturation deficit of leaves arose hastily, and ZXY04P-239 changed most obviously while ZXY04P-201 changed only slightly under drought stress. ZXY03P-173 and ZXY04P-201 increased in the relative plasmalemma permeability and the soluble sugar content while thant of ZXY04P-75 and ZXY04P-239 showed the trend of initial increasing, reaching the peak at the 8th day, then decreasing under drought stress.

20份鸭茅种质幼苗期抗旱性研究表明，干旱胁迫条件下，所有材料的株高、生物量显著下降，叶片脯氨酸和可溶性糖作为重要的渗透调节物质，其含量迅速增加，质膜相对透性的数值变大，细胞膜受伤害程度增大，水分饱和亏缺值变大，植物保水能力变弱，胞间CO2浓度增大；净光合速率、蒸腾速率、气孔导度和叶绿素含量等指标测定值减小，通过20份鸭茅种质苗期抗旱性综合评价，发现ZXY04P-201、ZXY03P-227、ZXY03P-122、ZXY04P-136属强抗旱性材料，ZXY04P-101、ZXY04P-89、ZXY04P-239属弱抗旱性材料，其他属于中等抗旱性材料。

The area where Clivia mirabilis endemic to experiences a semi-arid Mediterranean climate with a winter rainfall regime.

奇异君子兰生长的地区一般呈现出半干旱的地中海式气候，冬季往往还会经历一个降水期。

Photosynthesis and anti-oxidase activity of Paeonia suffruficosa leaves during bud growing stage were studied under drought stress.

以现蕾期的盆栽牡丹叶片为试材，研究了中度干旱胁迫下牡丹叶片光合作用和抗氧化酶活性的变化。

From the analysis of the magnetic susceptibility,TOC,TN,pigment,organic car-bon isotope ,HI,saturated hydrocarbon and 14C dating etc. of the sediment samples from coresof two boreholes in the Taihu lake,a knowledge of the evolution of paleoenvironment of thelake during the last 14ka is achieved. The results show that the lake has undergone the fol-lowing stages .. The Lake was at a low level ,or even became exposed during 14.3-13.3kaBP,reflecting an arid climate. There existed a transitional stage during 13.3-12.4kaBP,the climate being slightly warm and wet. There are indications of a cold and dry climate around 11.5kaBP,probably corresponding to the Younger Drays event ,comparable with other areas in east China.

本文根据东西太湖短柱岩芯的沉积物的物理、化学、生物指标的综合分析，讨论了该区距今14ka来的古气候变化过程，结果表明14.3-13.3kaBP，太湖水位低，环境指标甚至表现为暴露特征，反映了气候干旱：13.3-12.4kaBP，为偏暖湿的过渡阶段；该孔柱270-280cm(11.5kaBP左右)各类指标均明显更映冷干特征，可能是Younger Drays事件的记录，与我国东部其它地区有可比性；约10.9-10kaBP，这一时期是整个研究时段内一个较显著的温暖期。

The content of unsaturated acids was increased under 70% water supply and dry treatment in growing stage, while that of saturaled acids decreased. Under 70%￣55% water supply and dry treatment at podding the content of unsaturated a...

结果表明。70％～55％供水量及荚期干旱不饱和脂肪酸含量最高，饱和脂肪酸、亚麻酸含量最低、最有利于大豆油质的改良。

After the drought treatment plant was rehydrated and root weight accumulated rapidly, indicating that root system was move sensitive to the change of soil environment than the aboveground pad.

抽穗期干旱胁迫对黍子的影响大于拔节期，这是由于拔节期胁迫后恢复水分供应，根系有较长的时间与空间进行补偿的结果。

The results showed that water consumption law of spring maize was consistent in different precipitation years for normal or drought, the joint stage to tasselling stage was the peak of water consumption.

结果表明，无论是正常降水年型，还是干旱年型，春玉米在不同的生育时期耗水规律基本是一致的，即拔节至抽雄期是玉米的耗水高峰期。

Simulated water stress experiment on the five-leaf stage of maize growth with different concentrations of polyethylene glycol in nutrient solution was performed to study the effects of water stress and rewatering on chlorophyll content,chlorophyll fluorescence kinetic parameters,photosynthetic parameters and soluble sugar content.

采用聚乙二醇模拟干旱胁迫方法，研究玉米五叶期水分胁迫期间及复水后叶片叶绿素含量、叶绿素荧光动力学参数、光合参数和可溶性糖的补偿效应。

English grain aphid Macrosiphum avenae is the main pest on the ear of wheat during the drought year,which result in decreasing of yield and quality of wheat.

麦长管蚜Macrosiphum avenae是干旱年份小麦穗期的主要害虫，直接引起小麦减产且降低其品质。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了