土壤特征分析,soil characteristics analysis
1)soil characteristics analysis土壤特征分析
2)soil moisture characteristics土壤水分特征
1.Soil moisture characteristics of apple-planting subarea in Weibei dry highland,Shaanxi Province.;渭北旱塬苹果种植分区土壤水分特征
英文短句/例句

1.Comparative Study on the Soil Water Retention Curve between Macroporous Soil and Homogeneous Soil大孔隙土壤与均质土壤水分特征曲线比较研究
2.Soil Moisture Characteristics under Hedgerow Intercropping System植物篱模式下土壤水分特征变化研究
3.Research of soil water character below artificial forest of the heaviest rainfall year in Luochuan area of Yan an;特大丰水年洛川人工林地土壤水分特征研究
4.Soil moisture characteristics of different vegetation measures in loess hilly region of southern Ningxia宁南黄土丘陵区不同植被措施的土壤水分特征
5.Soil Water Characteristic of Forest Grass Intercropping Models in Hilly Area of the Loess Plateau;黄土丘陵沟壑区林草间作地土壤水分特征研究
6.Study of Soil Water Characteristics in Loess Hilly-Gully Region of Yanan;延安黄土丘陵沟壑区土壤水分特征研究
7.Characters of Soil Moisture under Different Vegetation Types in Xishui Slope浠水坡地不同植被类型土壤水分特征研究
8.Curve Fitting and Analysis for Soil Water ?Characteristic Data of Beijing Xishan Mountain京西山地土壤水分特征数据的拟合与分析
9.Study on the Characteristics of Soil Moisture Content in the Apple Growing Subregions of the Weibei Dry Highland In Shaanxi Province;陕西渭北旱塬苹果种植分区土壤水分特征研究
10.A Fractal Study on Soil Structure and Soil Water Movement Model;土壤结构的分形特征及土壤水分运动模型研究
11.Analysis on Monthly and Seasonal Variation of Soil Moisture in Shanghai上海地区土壤水分月季变化特征分析
12.Prediction Method of the Characteristic Curve of Water in Brown Soil潮棕壤土水分特征曲线预测方法研究
13.Estimation of soil moisture from Ts-EVI feature space基于Ts-EVI特征空间的土壤水分估算
14.Comparison of Soil Water Properties of Hilly Red Soils in Guangdong广东丘陵红壤土壤水分性能特征比较研究
15.Effects of Soil Moisture on Water Utilization Characteristics of Rice(Oryza sativa)不同土壤水分含量对水稻水分利用特征的影响
16.Characters of soil moisture niche-fitness of locust forest in the Loess Plateau黄土高原坡面刺槐林土壤水分生态位特征分析
17.ESTIMATING SOIL WATER RETENTION CURVE BASED ON FRACTAL DIMENSION OF SOIL PARTICLE SIZE DISTRIBUTION OF PURPLE SOIL根据土壤粒径分形估计紫色土水分特征曲线
18.Spatio-temporal Variability of Soil Water and Water Balance Analysis in Field;农田土壤水分时空变异特征及水量平衡分析
相关短句/例句

soil moisture characteristics土壤水分特征
1.Soil moisture characteristics of apple-planting subarea in Weibei dry highland,Shaanxi Province.;渭北旱塬苹果种植分区土壤水分特征
3)salinity characteristics of soil土壤盐分特征
4)soil nutrient properties土壤养分特征
5)soil characteristics土壤特征
1.Differences in ground vegetation and soil characteristics in adjacent birch and spruce stands of southern Sweden;瑞典南部相邻桦树和欧洲云杉林分的地表植被和土壤特征(英文)
2.There are significant difference of soil characteristics in each forest model forest.以重庆缙云山8种不同构建模式的水源涵养林及林地土壤为研究对象,用物种多样性指数(Simpson指数、Shannon-Wiener指数)、均匀度指数(Pielou指数)和物种丰富度指数(Margalef指数)以及用土壤容重、毛管孔隙度、非毛管孔隙度、pH值、有机质、全氮、全磷、全钾、速效氮、有效磷、速效钾和阳离子交换量12个指标表征土壤的物理性状和养分特征,分析了8种群落的植物多样性、土壤特征及二者的相互关系。
3.In our research,soil moisture contents in typical mountains in Dongjiang were measured by TDR in many locations with different land covers,landform,soil characteristics,land surface slopes in different slope position.选取广东省东江流域内具有不同覆被、地形、土壤特征的典型山体,利用TDR测定山体不同位置的土壤含水率,分析土壤水的空间分布规律及其影响因素。
6)soil properties土壤特征
1.Characteristics of artificial grassland plant communities with different establishment duration and their relationships with soil properties in the source region of Three Rivers in China;三江源地区不同建植期人工草地植被特征及其与土壤特征的关系
延伸阅读

土壤水分特征曲线土壤水分特征曲线soil moisture characteristic curve turang shuifen tezheng quxian土壤水分特征曲线(5011 moisture ehar.aeteristie eurve)土壤水分的基质势与含水率的关系曲线,也称土壤水分保持曲线。它是1939年英国土壤物理学家查尔兹(E. C. Childs)在第一次国际土壤学会上建议命名的。绘制此曲线以吸力表示基质势的负值。 土壤水分特征曲线可间接地反映土壤中不同孔隙的孔隙容积,由此可以计算对植物生长有利孔隙的分布情况。该曲线可以分析各种土壤的持水性与土壤水的有效性。利用土壤水分特征曲线可进行土壤水分能量(基质势)与数量(含水率)间的换算。在田间用负压计监测土壤吸力,利用土壤水分特征曲线,即可了解土壤墒情。该曲线还可用于灌溉与排水的管理。由水分特征曲线的斜率得出的容水度,也是分析土壤水分运动所需要的参数。- 含水率与吸力的关系当土壤处于饱和状态,土壤水吸力为零时,对土壤施加一微弱的吸力,土壤中无水流出;当吸力增加至超过某一临界吸力Sa值时,土壤中大孔隙开始排水,含水率开始减少(见图)。临界吸力,也称进气吸力或进气值。沙质土壤有较明显的进气值。当吸力继续提高至大于更多较小孔隙内的吸持力时,较小孔隙中的水分便排除出来。因此,土壤水分特征曲线就是土壤含水率随吸力的提高(即基质势的降低)而减少的关系曲线,此曲线也表明了土壤中土壤水能量和数量之间的相互关系。亘‘5。…l{臀番‘00}{\细,\。一_11\丫 50卜\沙、、、I0 .1 0.2 0.3 0.4 体积含水率e0 .5 0.6土壤水分特征曲线土壤水分特征曲线的形状它受多种因素影响。首先,受土壤质地的影响。沙质土壤孔隙较大,施加较小的吸力就能从土壤中排出水分。大孔隙排空后,仅有少量的水存留在土壤中。粘质土壤,孔径分布较均匀,以薄膜的形式吸附的水分多,要施加很大的吸力才能从土壤中排出水分。其次,受温度变化的影响,当温度升高时,水的粘滞性和表面张力下降,吸力降低。温度对不同土壤和同一土壤在不同含水范围的影响不同。土壤水分特征曲线还和土壤中水分的变化过程有密切关系。此外,土壤水分特征曲线还受土壤的结构和密度,矿物成分,有机质含量,水分中的化学成分等其他因素的影响。 土壤水分特征曲线的测定在室内用张力计(负压计)法或砂性漏斗法均可测得低吸力下扰动或原状土样的水分特征曲线。还可用水汽压平衡法和离心机法等施测。在田间,若在地下水位稳定、无植物生长的地面上,防止蒸发,待自然平衡后,土壤剖面上水分分布曲线即是局部的水分特征曲线。