最后建立了甘肃东部春播期干旱指数的均生函数预测模型。
The forecast model of Mean Generation Function (MGF) based on spring drought indexes was able to predict the drought occurrence for the East Gansu Province.
公元1949年前我国华北地区蝗灾的面积与干旱指数成正相关。
Locust disaster area is positively correlated with drought index in North China before 1949A.
最后，根据冬小麦的需水规律和土壤有效水含量构造干旱指数模型。
At last, a drought index model was developed by considering the water requirement of winter wheat and the available soil water content.
新疆年蒸发量和干旱指数的变化总体呈下降趋势，反映出气候转湿的信号。
The change of the annual evaporation and the aridity index in Xinjiang is in a decrease trend, which reveals that the signals of climate wetting have occurred.
因此，可利用径流量干旱指数的变化来预测该地区未来春小麦产量变化趋势。
So, the change tendency of runoff drought index can be used to predict the variation tendency of output of spring wheat in the future of this area.
因此，可利用径流量干旱指数的变化来预测该地区未来春小麦产量变化趋势。
So, the change tendency of runoff drought index can be used to predict the variation tendency of output of spring wheat in the fu…
文章还对江西干旱标准、干旱指数与伏、秋干旱时空分布客观特征等进行分析。
Meanwhile, the drought criterions, drought indexes as well as spatial and temporal distribution characteristics within dry periods are analyzed.
研究结果表明，径流量干旱指数与河西灌溉区春小麦气候产量呈反位相的变化趋势。
The result shows that runoff drought index and spring wheat climate output of Hexi irrigational area appears opposite variation tendency.
研究结果表明，径流量干旱指数与河西灌溉区春小麦气候产量呈反位相的变化趋势。
The result shows that runoff drought index and spring wheat climate output of Hexi irrigational area present opposite variation tendency of phase.
历年气候干旱指数平均为0.002，极值出现在下游的民勤地区，达0.581。
The average arid index was 0.002, with a maximum of 0.581 in the lower Minqin region.
从大气环流特征、干旱指数S及信噪比等三个方面对陕西省近几年干旱月份进行了分析。
Shaanxi province drought months in recent years were analysed by examining the atmosphere general circulation features, drought index S and the signal to noise ratio.
最后依据干旱指数建立了干旱受灾面积和成灾面积评估模式，以及干旱经济损失评估模式。
Finally, assessment the model of area covered by drought, the area affected by drought and the economic losses of agriculture by drought is established according the drought index.
从土壤水分平衡原理出发，以降水量、温度和区域水文观测等因子为基础，建立了土壤干旱指数模型。
Based on the principle of soil water balance, including precipitation, temperature and other observations, this article built a model of soil drought index.
由此，用植被供水指数确定了各地州的受灾面积，并建立了植被供水指数估计地面干旱指数的遥感方程。
Thus the drought area in different regions could be determined and regression equations to estimate surface drought index by vegetation supply water index were established.
考虑到不同时期干旱对农业生产的影响不同，再次分配权重构建了农业综合评估干旱指数，并进行了分析。
For different droughts had different influences on agriculture, the weights were redistributed to establish agricultural comprehensive evaluation index. All of drought indexes were analyzed.
用西北地区140个气象站1971～2000年的春季降水、蒸发资料，计算了一种K干旱指数，并制定了干旱标准，分析了西北春季干旱的气候特征。
A kind of K drought index and its criterion are made by using spring precipitation and evaporation data of 140 stations in Northwest China from 1971-2000.
中国春季干旱指数大多存在5 ~8年的短周期年际周期变化，12 ~13年、15 ~16年的长周年际周期变化存在于部分区域，个别区域还存在20年长周期年际周期变化。
It is proved that the drought index exists 5 ~ 8 a period in the most areas, it exists 12-13 a and 15-16 a period in some areas, it also exists 20 a period in specific area.
该地图展现了公认的指标—帕尔默干旱强度指数。
The maps show a widely recognized indicator known as the Palmer Drought Severity Index.
结果表明：S指数能较好地反映阿勒泰地区的干旱情况。
The results showed that S drought index accorded with drought condition in Altay.
之后通过树轮年表和湿润指数的相关性分析，也证明了干旱是影响刺槐生长的主要限制因子。
The fact that drought is the key limiting factor for black locust growth was further proved in the correlation analysis between the chronologies and the humidity index of Lanzhou city.
结果表明：鉴定甜瓜品种抗旱性，苗期可应用株高胁迫指数（PHSI）、干物质胁迫指数（DMSI）、叶片水分饱和亏、电解质渗出率、干旱处理伤害率等指标。
The results showed that PHSI, DMSI, WSD, electrolyte transudation ratio and injury ratio under drought treatment could be used to appraise the drought resistance of melon species at seedling stage.
基于信息扩散理论提出直接估计低温冷害、干旱和洪涝的风险评估方法，以低温冷害为例，将计算结果与风险指数法和主观频率法做比较。
This research raised the method in risk assessment of low temperature and cold damage, drought and flood disaster based on information diffusion theory.
该指数可根据每日最新日降水值和日最高气温值的变化，及时给出影响干旱程度变化的主要气象因素的变化，使干旱监测具有实时性、敏感性和连贯性。
Because the change of the main factor of drought is given by the daytime precipitation and the highest temperature every day, the index is real-time, sensitive and consistent.
而适度的干旱可以提高水分利用效率和收获指数。
The Landrace variety Monkhead use more soil water, but the water using efficient is low.
而适度的干旱可以提高水分利用效率和收获指数。
The Landrace variety Monkhead use more soil water, but the water using efficient is low.
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