A new pretreatment method-orthogonal signal correction (OSC) was presented to eliminate the influence of the noise on soil organic matter (SOM) content prediction.
分析了经过简单处理的土壤样本光谱特性,将正交信号校正与偏最小二乘算法回归相结合,建立了土壤光谱特性与土壤有机质含量之间的定量分析模型。
The spatial variability of soil organic matter(SOM)in the Shiqu County was expressed by the spatial analytic approaches such as ordinary kriging(OK)on the basis of the software ArcGIS Desktop 9.
根据60个土壤有机质含量的样点数据,在ArcGIS9。
Results showed that continuous application of FYM increased SOM successively and eventually reached such a high level as 60g?kga?a(c)-1 in SOM content while maintaining high crop yield.
结果表明 ,长期施用有机肥可以在保持高产稳产条件下使土壤有机质持续增长 ,可以显著影响有机质的增长速度 ,并培肥土壤有机质达到 60gkg- 1的高水平。
Characteristics of spatio-temporal changes of soil organic matter in typical fringe in Beijing for 25 years;
北京典型边缘区25年来土壤有机质的时空变异特征
Spatial variability characteristics of farmland soil organic matter in Pinggu District,Beijing,China;
北京市平谷区农用地土壤有机质空间变异特征
Adaptability of seven leguminous forages and improvement to soil organic matter content in Guangxia grapery;
7种豆科牧草在宁夏广夏葡葡园的适应性及其对土壤有机质的影响
Measurement and analysis of the content of organic matter of soil in Qiqihar area;
齐齐哈尔地区土壤有机质含量的测定及分析
Influence of cryptogamic soil crusts on accumulation of soil organic matter in Gurbantunggut Desert,northern Xinjiang,China;
生物结皮影响下的土壤有机质分异特征
Soil organic matters(SOM) are important components in soil,and they would affect the physicochemical,chemical and biological properties of the soil directly or indirectly.
土壤有机质是土壤的重要组成部分,土壤有机质的存在直接或间接地影响土壤的物理、化学和生物等许多性质。
Based on 137Cs tracer method,the soil erosion rate,organic matters and heavy metals loss on the agricultural lands of Danjiangkou city,Hubei Province,were studied.
结果表明:农用地土壤侵蚀速率从大到小依次为沟谷旱地>坡耕地>菜田>水田>草地>灌丛,耕作土的侵蚀强度多为中度和强度侵蚀,非耕作土则是微度和轻度侵蚀;不同土地利用方式对土壤有机质和重金属分布影响很大,有机质含量分布规律为草地>灌丛>菜田>水田>沟谷旱地>坡耕地;Pb与Ni含量为灌丛>草地>坡耕地>沟谷旱地>菜田>水田;Cr与Cu含量为灌丛>菜田>坡耕地>草地>沟谷旱地>水田;Zn含量为灌丛>菜田>草地>坡耕地>沟谷旱地>水田。
fibric soil material
纤维质有机土壤物质
hemic soil material
半分解有机土壤物质
sapric soil material
高分解有机土壤物质
The Relationship among Organic Matter Content and Soil Microbial Biomass and Soil Enzyme Activities
土壤有机质含量与土壤微生物量及土壤酶活性关系的研究
Regulations of Soil Nitrification by Organic Matter;
有机物质对土壤硝化作用的调控研究
Progreess on Extract Methods of Organic Compounds in Soil
土壤介质中有机物提取方法研究进展
Effects of Land-use Types on Soil Microbial Biomass and Organic Matter
土地利用类型对土壤微生物量和有机质的影响
Effect on the Amounts and Quality of Soil Organic Matter with Different Sod Materials
不同生草物料对土壤有机质数量和质量的影响
The Study on the Effect of Organic Matter and Microorganisms on the Formation of Soil Humus;
有机物料及微生物对土壤腐殖质转化的研究
The Effects of Bio-organic Fertilizer Application on Crops and Soil
施用生物有机肥对土壤理化性质及作物的影响
Spatial-temporal variation of soil organic carbon and its relations to soil physical properties in degraded alpine grasslands
退化高寒草原土壤有机碳时空变化及其与土壤物理性质的关系
mean residual time of soil organic matter
土壤有机质平均残留期
loose soil rich in organic matter.
疏松的土壤，富含有机物。
These compounds make up approximately 10 to 15% of the total organic matter in soils.
这些化合物占整个土壤有机质总量的10％-15％。
Effects of Dissolved Organic Matter (DOM) on Environmental Behaviors of Pollutants in Soil
溶解性有机质对土壤中污染物环境行为的影响
Effect of soil organic matter on adsorption and desorption of oxytetracycline in soils
土壤有机质对土霉素在土壤中吸附-解吸的影响
Soil organic matter is the product of microbial decomposition of plant and animal residues.
土壤有机质是微生物分解植物和动物残体的产物。
A major portion of the soil organic matter is derived from the added and residual vegetative material.
加进去的和残留下来的植物物质则是土壤有机质的主要来源。