干旱

Effects of drying-rewetting at different growth stages on root growth and wateruptake rate of spring wheat were studied.

利用土柱试验研究了不同生育期干旱-复水对春小麦根系生长和根系吸水速率的影响。

The key to the stochastic modeling is to build a suitable stochastic model of precipitation.

地区干旱随机模拟研究的关键是建立合适的降雨过程随机模型。

The result indicated that soil moisture change affected biomass distribution in different organs, i.e., accumulative CO2 assimilation distribution. White clover could escape drought by increasing dry matter distribution in stolon and root system.

结果表明：土壤水分变化首先影响到生物量在植物不同器官的分配，即累积性的CO2净同化产物的分配，白三叶能够通过提高匍匐茎、根系的干物质分配比例来回避干旱。

Result showed that wild Styrax resources in Henan had 6 species,4 species of which were endemic to China.They were all community companion species distributed in southern mountainous areas of Henan.Styrax had characteristics such as drought tolerance,cold tolerance and strong seed viability.

研究结果表明：河南野生安息香属有6种植物，其中4种为中国特有种；经种群数量特征量化分析，属于群落伴生种；大多分布于豫南山区杂木林中，具有耐土壤干旱、耐寒、种子萌发力强等特点。

Based on the average subordinative value, the drought resistance of different cultivars of maize was arranged.

传统的作物抗旱研究是在干旱条件下进行的产量鉴定，程序复杂，工作量大，效率低。

The drought resistance of Chinese Wild Vitis species was studied by shape index, relative water content, and relative plasma permeability under the conditions of drought stress, and evaluated by subordinative function.

本研究以中国葡萄属野生种8个种11个株系，欧洲葡萄2个品种，河岸葡萄及燕山—1×河岸葡萄107株F_1代杂种共122份材料为试材，调查了盆栽干旱胁迫条件下叶片的形态变化指标，测定了相对含水量和细胞膜相对透性两项指标；以隶属函数法为手段处理这三项指标，对供试的葡萄属植物的抗旱性进行了综合评价。

As the subsistence farming of loess plateau with frequent natural disasters such as drought and geographically is far away from the economic center. In recent years, it is very common in that country"s countryside that the labors earn life outside their hometown which leaves the problem of "the children-staying-in-local " education gradually serious. I profess in a countryside high school in Tongwei county and know that place"s situation thoroughly thus I gain the first-hand materials.

作为全国有名的贫困县，在经济上属于黄土高原自然农业经济，干旱等自然灾害高频发生，在地理上远离经济中心，近年来，当地农村劳动力外出务工的现象非常普遍，"留守子女"的受教育问题日益突出，本人任教于通渭县的一所农村完全中学，熟悉当地情况，能够获取第一手资料。

The GPI method assumes that the cloud with brightness temperature below 235K would be rainy, then the area of rain is equal to the coverage of cold cloud below 235K. It may be suitable for most part of China at tropic and subtropic area. But for northern part and plateau area of China, the GPI overestimates precipitation due to lack of enough water vapor.

4GPI方法假定云顶亮温低于235K时，将产生降水，降水区的面积就等于低于235K亮温覆盖的区域，这在热带和中纬度大部分地区可能是适用的，但对我国北方干旱地区以及高原地区，则存在明显的高估，表明有云不一定会有雨，为了修正西北部降水的系统性高估，引入相对湿度修正因子，即在一定温度条件下，加上一定的湿度条件，才能形成降水。

At the same time, a series of supply-side disruptions in key commodity markets ranging from drought to disease have been at work.

与此同时，在关键的大宗商品市场上，干旱和疾病等因素造成的一系列供应方面的中断也发挥了作用。

The swathe spans roughly one-fifth of the state, an area larger than Massachusetts, New Jersey and Connecticut combined.

狭长的干旱地区大概占了整个州的1/5，这比马萨诸塞州、新泽西州和康涅狄格州加起来还要大。

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。