1)drought degree干旱程度
1.In order to study the effect of N levels on growth of summer maize under different drought degrees,a field experiment was carried out under rainproof sheds.在田间小区遮雨条件下,采用有交互作用的双因素试验方法,设置了连续干旱03~2 d 7个水分处理及N 0、1402、80 kg/hm23个氮肥处理,研究施氮水平对不同干旱程度夏玉米生长的影响。
2.The drought experience of soil and crop could be described perfectly by combining drought intensity(I) with drought degree(D).干旱强度和干旱程度结合才能完整地描述土壤作物干旱状况,土壤干旱强度I是土壤剖面失水速率的函数,干旱影响逐渐累积并增强就构成干旱程度D,据此提出了包含I和D二个指数的土层干旱指标表达模式。
3.In this paper, based on the identification of the drought phenomenon, an evaluating model of the drought degree is developed by using the technique of the artificial neural network.在干旱识别的基础上 ,采用人工神经网络技术 ,提出了一个干旱程度的评估模型 ,并经海河流域的实际应用表明 ,该方法简单易行 ,可为干旱研究提供一条新的途
英文短句/例句
1.Crop Threshold Response to Progressive Soil Drought and the Quantitive Formulation for Red Soil Drought Degree;连续干旱下作物阈值反应与红壤干旱程度表达
2.This paper deals with the water physiology and growth characteristics of locust seedling under the soil drought condition.采用盆栽试验对不同土壤干旱程度下刺槐幼苗水分生理特征进行了初步研究。
3.Qualified evaluating on salinization degree by the remote sensing in the arid oasis干旱区绿洲土壤盐渍化程度遥感定量评价
4.Research on Agricultural Drought Based on Temperature/Vegetation Dryness Index Analysis基于温度植被干旱指数法的农业干旱研究
5.Studies on Water Consumption and Drought-resistance Characteristics of Ten Robinia Pseudoacacia Clones in Drought Gradient干旱梯度下10个刺槐无性系耗水抗旱特性研究
6.Research on Agricultural Drought in Hubei Province Based on Modifying Palmer Drought Severity Model;基于修正Palmer旱度模式的湖北农业干旱研究
7.The characteristics of drought and construction of drought-resistant and relievable farming system on the arid area of the Loess Plateau in the middle and east Gansu province甘肃省黄土高原旱作区干旱灾害特点及抗旱救灾农作制度的建立
8.The salinity of lake water is a sensitive monitor of climate in arid and semiarid region.在干旱半干旱地区,封闭湖泊的湖水盐度对气候变化反应敏感。
9.Monitoring drought in mountainous area based on temperature/vegetation dryness index (TVDI);温度植被干旱指数(TVDI)在复杂山区干旱监测的应用研究
10.Calibration and Analysis of the Surface Temperature in the Arid and Semi-arid Area Based on Landsat ETM+Data基于Landsat ETM+影像的干旱半干旱地区地表温度反演研究与分析
11.Process of Land Use/Land Cover Change in the Oasis of Arid Region;干旱区绿洲土地利用与覆被变化过程
12.Effect of drought process on natural production function of cultivated land干旱过程对耕地自然生产功能的影响
13.SOIL WATER INFILTRATING PROCESS IN AFFORESTED LAND ON SLOPES OF THE SEMIARID REGION OF LOESS PLATEAU半干旱区人工林地土壤入渗过程分析
14.Daily flow modeling in arid ungauged basin干旱区资料稀缺流域日径流过程模拟
15.Indian sub continent is highly prone to drought印度次大陆是干旱易发地区
16.System inducement and its influence on succession of ecosystem in arid regions;干旱区生态环境演替的制度诱因分析
17.Preliminary Analysis on the Oasis Stability at the Landscape Level in the Arid Regions;干旱区绿洲景观尺度稳定性初步分析
18.Cold regions cover the areas with the average temperature of the coldest month below 0’C.Arid regions cober arid and semiarid areas.寒区是指冬季最冷月平均温度为零度以下地区；旱区包括干旱区和半干旱区。
相关短句/例句
different drought degrees不同干旱程度
1.Taking Dingcheng in Hunan as an example,by analyzing the characteristics of hazard-causing factors and using selected meteorological statistical data according to a set of criteria to differentiate drought-year in different drought degrees,it is indicated that drought in fall is more and sev.在此基础上,分析轻旱、中重旱、极重旱不同干旱程度下灾情形成过程及其与承灾体脆弱性的关系,构建了不同的脆弱性评价指标体系,并以不同干旱程度的旱年为实例进行评价。
3)agricultural drought extent农业干旱程度
1.Study on probability distribution of agricultural drought extent;农业干旱程度概率分布的研究
4)drought severity干旱严重程度
5)drought level干旱程度等级
6)drought process干旱过程
1.Influence of drought process on evaporation under partial mulching conditions;局部覆盖条件下干旱过程对土壤水分蒸发的影响
延伸阅读
干旱干旱drought damage 台湾省资料暂缺御，又未能及时解决维持社会正常生产和人类生活所必需的最低限度的水资源而造成的一种缺水灾祸。不同研究领域和不同研究对象的干旱有以下不同涵义：①气象干旱。在一个时期内，水分供应持续低于气候上所期望的水分供给。干旱强度取决于水分亏缺量及其持续时间。②农业干旱。作物缺水不能满足正常生长所需要的水分。干旱强度取决于土壤不同深度含水量、作物种类、生长状况和生长期。根据作物受害的成因不同，可将农业干旱分为土壤干旱、大气干旱和生理干旱。土干旱土地龟裂ganhan干早(曲旧ught dall网罗)一个地区某段持续时间里，按照常规年景安排的人类活动受到缺水威胁所出现的旱象。早宙训具指出现比较严重旱象时，由于社会抗旱力不高或无力抵壤于旱是由于土壤缺水，植物根系吸收不到足够的水分补偿蒸腾消耗所造成的危害;大气干旱是空气十分干燥，并伴有一定风力，土壤虽不一定缺水，但由于蒸腾强烈，使植株供水不足而形成危害;生理干旱是不良的土壤环境条件使作物生理过程发生障碍，导致植株水分平衡失调而造成危害。③水文干早。地表水减少和地下水位明显降低或者河流流量显著减小而出现的旱象。④社会经济干旱。缺水对该地区的经济产生明显的不利影响。 干旱是水分亏缺缓慢累积的结果，属渐进性灾害。大气环流异常造成的干早，其影响面积往往较大。根据干早影响时间长短和特征，可分为长期干旱、季节性干早、临时干旱和隐蔽干旱。干旱是中国主要气象灾害之一，尤其对农业影响最大。根据历史记载，中国从公元前2肠年到1男9年的2155年中，发生早灾达1056次，平均两年一次。防御干早是中国防灾减灾的重要工作，根据干旱规律，调整农业结构、兴修水利，合理灌溉，平整土地，深耕改土，选育耐早品种，提高抗早能力、抑制蒸发和蒸腾、减少水分消耗、蓄水保墒和营造农田防护林等措施对于防早抗旱有明显效果。(安顺清)
