体积田间持水量,capacity soil moisture constant by weight
1)capacity soil moisture constant by weight体积田间持水量
2)field capacity田间持水量
1.Determination offield capacity with pedo-transfer functions method;土壤传递函数法在确定田间持水量中的应用
2.Study onfield capacity distribution about soil of China;全国土壤田间持水量分布探讨
3.Principles and experimental verification of capillary suction method for fast measurement offield capacity;用毛细吸渗原理快速测量土壤田间持水量的研究
英文短句/例句
1.Spatial variability of field water-holding capacity in the farmland in Liaoning province辽宁农田土壤田间持水量的空间变异性分析
2.Study on Soil Field Capacity Estimation in the Loess Plateau Region黄土高原地区土壤田间持水量的计算
3.Field capacity The point at which the soil contains all the water it can hold by capillary and chemical attraction.田间持水量：土壤通过毛细作用和化学吸力可维持的全部水量。
4.The method of calculating parameters that VCI and TCI require is proposed.因此田间持水量是计算土壤相对湿度必需的一个基本参数。
5.field moisture equivalent田间含水当量;田间水分当量;工地含水当量
6.Time Series Analysis on Mine Inrush Water Quantity in Yutianbao Mine鱼田堡煤矿矿井涌水量时间序列分析
7.SVM-Based Spectral Recognition of Corn and Weeds at Seedling Stage in Fields基于支持向量机的玉米苗期田间杂草光谱识别
8.Weed Identification Method Based on SVM in the Corn Field基于支持向量机的玉米田间杂草识别方法
9.Spatial Distribution Analysis of Winter Wheat Field Soil Water Content in Linfen Irrigation District of Shanxi Province汾西灌区冬小麦田间土壤含水量空间分布研究
10.Research on Plastic Film Mulching Effect to Soil Water Resources Amount and Utilization in Cotton Field棉田覆膜对田间土壤水资源量及其利用的影响研究
11.The Influence of Hybrid Rice-glutinous Rice Intercropping on Diseases, Insects, Weed and Rice Yield;水稻杂糯间作对稻田病虫草害及产量的影响
puting and Study on Irrigation Requirement in Field of Bojili Irrigation District;簸箕李灌区田间灌溉需水量计算与研究
13.Analysis on Evaluation Indexes Based on Yield of Characteristic of Winter Wheat Response to Water in Field冬小麦田间水分反应特性产量评价指标研究
14.Calibration on Measurement of Soil Water Content Using Time Domain Reflectometry(TDR) in Yangzhou Area扬州地区TDR法田间测定不同土壤含水量的标定
15.Water retains heat much longer than air.水比空气保持热量的时间要长得多。
16.VARIATION CHARACTERISTICS OF FIELD WATER CONSUMPTION AND SOIL WATER DEFICIT FOR SOME CROPS GROWING ON THE RAINFED LOESS PLATEAU OF EASTERN GANSU陇东黄土旱塬区几种作物田间耗水量及土壤水分亏缺分异特征
17.A Research on Energy Flow Through Rice-Planthopper-Pirata Subpiraticus in Rice Ecosystem;稻田生态系统水稻—飞虱—拟水狼蛛间能量流动研究
18.field determination of hydraulic conductivity测定田间水力传导性
相关短句/例句
field capacity田间持水量
1.Determination offield capacity with pedo-transfer functions method;土壤传递函数法在确定田间持水量中的应用
2.Study onfield capacity distribution about soil of China;全国土壤田间持水量分布探讨
3.Principles and experimental verification of capillary suction method for fast measurement offield capacity;用毛细吸渗原理快速测量土壤田间持水量的研究
3)field water capacity田间持水量
4)field moisture capacity田间保水量;田间持水量
5)available field capacity有效田间持水量
6)Field water-holding capacity土壤田间持水量
1.Field water-holding capacity in different soil layers above the depth of 30 cm in the north is larger than that in the south of Liaoning province,while it is contrary under the depth of 30 cm.利用常规统计方法、地统计学方法及GIS空间分析技术,分析了辽宁5—50 cm土壤田间持水量的空间变异性。
延伸阅读
田间持水量田间持水量field capacity水埋藏较深的条件下，土壤中所能保持的毛管悬着水的最大量。田间持水量一词是E.V.海尔哥德于1906年提出的。F.G.维迈耶尔和A.H.亨德里克森于1927年定义为“在过剩的重力水被排除后，向下移动的水显著减少时残留于土壤中的水量”。n.C.科索维奇早在1904年称为最小持水量。在农业生产中，毛管水是最有效的土壤水分。毛管水根据其所处部位及存在状况，又分为毛管上升水和毛管悬着水。毛管上升水是指在地下水支持条件下沿毛管上升的水分;毛管悬着水是指降雨和灌溉后，重力水完全下渗，借助毛管力保持在土壤上层的水分。田间持水量是土壤保水性能的一个重要指标，也是设计田间排灌沟渠、拟订灌排水定额的重要参数。当土壤含水量高于田间持水量时，土壤中开始出现重力水，大孔隙充水，缺少空气，作物根部环境条件恶化。当土壤含水量正好为田间持水量时，土壤水势在一0·14一一0.65大气压之间，由于不同质地土壤的含水量与水势之间的关系不一样，不同质地土壤的田间持水量差别很大，见表。不同质地土壤的田间持水量┌─────┬───┬────┬───┬────┐│、黔饭│紧砂上│砂壤土 │轻壤土│中壤土 │├─────┼───┼────┼───┼────┤│质量湿度/%│16一22│22一30 │22一28│22一28 │├─────┼───┼────┼───┼────┤│容积湿度/%│26一32│32一42 │30一36│30一35 │├─────┼───┼────┼───┼────┤│着黔溉、 │重壤上│轻粘土 │中粘土│重粘土 │├─────┼───┼────┼───┼────┤│质量湿度/%│22一28│28一32 │25一35│30一35 │├─────┼───┼────┼───┼────┤│容积湿度/%│32一42│4()一45 │35一45│4()一50 │└─────┴───┴────┴───┴────┘(刘中丽)t ianiian ehishuilian田I’ed持水量(field eapaeity)在地下
