soil depth

The results show that after one and two hour irrigation,soil moisture is a three order polynomial of the soil depth.

结果表明:在注水1,2 h,土壤湿度随土壤深度呈3次多项式关系变化,可以根据浅层土壤信息反演深层土壤湿度。

The results showed that soil organic matter,pH,total N,and available N,P and K change irregularly with tree age;total P decreases by power function;exchangeable Ca and base capacity vary by Logstic model;exchangeable Mg increases by power function;soil organic matter;total N,available N,P and K decrease by power function with soil depth;total P.

结果表明,油松林地土壤有机质、全氮、速效氮、速效磷、速效钾含量及pH值随树龄增加无确定的变化规律;土壤全磷含量随树龄增加按幂函数衰减;土壤交换性钙含量和交换性盐基总量随树龄增加按Logstic模型变化;交换性镁含量随树龄增加按幂函数递增;油松林地土壤有机质、全氮、速效氮、速效磷、速效钾含量随土壤深度的增加按幂函数衰减,土壤全磷、交换性钙和交换性镁含量及交换性盐基总量随土壤深度增加无确定变化规律,但土壤pH值随深度增加按幂函数增加。

The results shows that: soil organic matter,pH,total N,available N,available P and available K,exchangeable Ca and exchangeable base capacity changes irregularly with tree age,total P and exchangeable Mg changes fluctuantly;Soil organic matter,total N,available N decreases by power function with soil depth,available P tends to decreases,total P,available K,exchangea.

结果表明,刺槐林地土壤有机质、pH值、全氮、有效氮、有效磷、速效钾、交换性钙和交换性盐基总量随刺槐树龄增加无明确变化规律,土壤全磷和交换性镁含量则呈现波动性变化;刺槐林地土壤有机质、全氮、有效氮含量随土壤深度增加按幂函数衰减,有效磷含量有递减趋势,土壤全磷、速效钾、交换性钙、交换性镁和交换性盐基总量随土壤深度增加无明显变化规律,而土壤pH随深度呈波动性变化;与撂荒地相比,刺槐林地土壤有机质、全氮、有效氮、有效磷、速效钾、交换性钙、交换性镁含量及交换性盐基总量分别增加21。

Effects of Occur Tendency of Maize Diseases by Pathogenetic Fungi Distribution in Subsoiling Fields;

深松土壤病原真菌数量分布对玉米病害发生趋势的影响

Recovery of ~(15)N-labeled nitrate injected into deep subsoil by maize in a Calcaric Cambisol in North China Plain;

玉米对土壤深层标记硝态氮的利用

Temperature and depth's dependences on N_2O emission in the cultivated layer soil

耕层土壤N_2O排放与温度及土壤深度依变性

Fig.4. Pycnidiospore survival of Didymella bryoniae placed at soil surface,5,15, and30 cm below ground at field.

四、土壤表面、表下5、5及30公分土壤深度的瓜类蔓枯病菌柄孢子存活情形。

Soil Microbe in Vineyards with Different Tree Ages and Different Soil Depths

不同树龄酿酒葡萄不同土壤深度根际和根区微生物数量的研究

RESEARCH OF GROUND FROZEN DEPTH IN SEASONALLY FROZEN AREAS

季节性冻土地区土壤冻结深度的研究

soil consistence

土壤结持度, 土壤稠性

The ef fect of erosion varies with soil type and depth.

侵蚀的影响因土壤的类型和深度的不同而不同。

Using Depth of Soil Water and Water Consumption by Littleleaf Peashrub in the Semiarid Area of Loess Hilly Region

半干旱区柠条林利用土壤水分深度和耗水量

The Effect of the Infiltration Characteristics Under the Different Macropores' Depth in the soil

不同大孔隙深度对土壤水分入渗特性的影响

BACK-PROPAGATION NEURAL NETWORK MODEL FOR RED PEPPER SOIL MOISTURE FORECAST AT DIFFERENT DEPTHS

辣椒不同深度土壤墒情预报的BP神经网络模型

Soil Nitrogen, Phosphorus and the Other Chemicals' Release and Transport with Surface Runoff and Mixing Zone Depth on the Loess Slopeland;

黄土坡面土壤氮磷等化学物质径流迁移与混合层深度研究

East Indian tree that puts out aerial shoots that grow down into the soil forming additional trunks.

东印度一种树，树枝上长出气生根，向下深入土壤中，形成附加的树干。

Study on Ecologic Effect of Soil Tillage Depth and Straw Recycling in Directly Sowing Rice Field;

直播稻田土壤耕作深度和秸秆还田的生态效应研究

Impacts of the applied period and depth of desulfurized gypsum on improving the alkaline soil

脱硫石膏施用时期和深度对改良碱化土壤效果的影响

Soil Water Sensor Placement for Precise Irrigation Scheduling Using Soil Moisture Information

小麦实时控制灌溉的土壤水分含量探头合理埋设深度研究

Effects of Vertical Depth in Root Restriction Culture and Soil Texture on Apple Tree Development

限根栽培中根系垂直深度和土壤质地对苹果树体发育的影响

Effects of Tillage Practices on Soil Organic Carbon Distribution and Mineralization in Different Depth of a Brookston Clay Loam Soil

耕作方式对Brookston粘壤土耕层不同深度有机碳分布及稳定性影响

Measure sediment temperature at intervals of 5 m by inserting the soil thermometer into the sediment.

沿样条每隔5米用土壤温度计量度土壤温度。

ionizing radiation soil moisture meter

电离辐射土壤湿度计