soil organic matter

Accumulation of Soil Organic Matter and Influential Factors on the North Slope of Changbai Mountain

长白山北坡森林土壤有机质的累积过程及其影响因子

Compared with pure stand, mixed forest has a better soil nutrient status, the content of soil organic matter being increased 16.7%.

和纯林相比，混交林林下土壤养分状况有所改善，土壤有机质含量提高了16.7%。

By comparison with control, after planting legumes in two consecutive years, soil organic matter was increased by 15.6% in the first year and 9.1% in the second year, and soil pH was decreased by 0.16 in the second year.

与休闲相比，种植和翻压豆科绿肥后，第一年和第二年小麦播前土壤有机质分别提高15.6%和9.1%，pH在第二年降低0.16。

Balance of soil organic matter in a long-term triple cropping system in paddy fields

多熟制稻田土壤有机质平衡的定位研究

Capacity measuration is the prevailing method of soil organic matter determination.

容量法是土壤有机质测定中普遍使用的方法.

Under conventional crop management condition, wheat grain yield was affected significantly by soil organic matter and spike number per acreage.

研究发现，在目前的冬小麦-夏玉米轮作体系中，土壤有机质含量和单位面积有效穗数是影响冬小麦产量的主要因素，而生长天数则是影响玉米产量的主要因素。

Surface soil organic matter contents of each plantation was higher than that of the control plot.

除念珠相思林以外,人工林表层土壤有机质含量均高于所在试验点的对照地.

The results based on decision-making tree and GIS overlay analysis show that the soil organic matter always holds the first place in all knowledge rules, P and N rank the second.

决策树和GIS图层叠置方法研究结果表明，土壤有机质始终占据决策树全部知识规则的第一次分支，起着重要的决定性作用，其次为速效磷和碱解氮；

These processes are controlled by anaerobic decomposition of soil organic matter and respiration and excretion of rice roots, relating to soil proper-ties as well.

其转化主要受土壤有机质嫌气分解和水稻根系呼吸及分泌作用的制约，并与土壤基本性质密切相关。

The correlations between soil labile organic matters and soil organic matter were significant.

各活性有机质组分之间及其与土壤有机质的相关性显著。

The effects of different level bentonite on the content of soil water and soil organic matter in the field are studied with the sandy sieve tube method.

通过田间条件下砂滤管试验，研究了不同膨润土施用量及有机物料对砂土土壤含水量和有机质含量的影响。

Spore density is also negatively correlated with the contents of soil organic matter, soil available P, soil available K and soil Cl-.

孢子密度与土壤有机质、速效磷、速效钾和Cl-含量呈负相关，泡囊定殖率与土壤pH呈正相关，而与土壤湿度、速效钾和Cl-含量呈负相关。

The study also noted that when tilled soil particles come in contact with air, soil organic matter is lost through the process of oxidation.

研究还提示了当被耕作的土壤微粒与空气接触，土壤的感官物质将通过氧化的过程而被丢失。

Additions of organic matter to soil hasten calcium losses.

土壤增施有机质会促进钙的损失.

Studies on the balance of soil organic matter in summer cotton field

麦套短季棉棉田土壤有机质平衡研究

It embodied that the content of soil organic matter increased, soil unit weight improved, and the number of soil microorganism increased.

具体表现在增加了土壤有机质含量，有利于土壤容重的改善，同时增加了土壤微生物种群和数量。

The content of soil organic matter affected soil swelling rate remarkably when soil texture was not obviously different.

有机质含量在质地差别不明显情况下，对土壤膨胀率也有极显著的作用与影响；

Add plenty of organic matter to improve the soil.

施用大量的有机肥料以改良土壤。

It had positive correlation with soil organic matter and CEC.

其吸附率与土壤有机质、CEC呈正相关.

The adjunction of weathered coal can increase soil organic matter, soil total nitrogen and available K content. 4.

风化煤的添加可增加土壤有机质含量、全氮和速效钾含量。

Shady soil organic matter 、 total porosity 、 capillary porosity and non-capillary porosity are greater than sunny; Shady soil bulk density is greater than sunny; different slope positions of soil properties showed different variation. ( 3) The biggest soil bulk density was at gully bottom.

阴坡的土壤有机质、总孔隙度、毛管孔隙度和非毛管孔隙度均大于阳坡；阴坡的土壤容重小于阳坡；（3）不同坡位的土壤理化性质表现出不同的变化规律。

The content of soil organic matter is highest in the top layer and decreased from top layer to bottom layer.

表土层有机质含量最高，且随着土层深度增加，有机质含量逐渐降低。

In summer, soil bacteria and fungi and soil insect community were more closely related, and alkaline phosphatase, soil organic matter, total phosphorus and total potassium were the key interaction factors of them.

夏季，土壤细菌和真菌与土壤昆虫群落的联系更为密切，碱性磷酸酶、土壤有机质、全磷和全钾是实现其相关性的关键因子。

Various improvement measures could enhance the activity of soil organic matter and carbon pool management index and raise the level of the soil carbon pool. It was showed that these improvements had effects of fertility-improving and sound development of soil properties.

不同培肥措施均能提高土壤的活性有机质以及土壤的相对碳库管理指数，提高土壤的碳库水平，说明这些培肥措施对土壤有培肥作用使土壤性能向良性发展。

The soil moisture, organic matter and iron oxide have considerable effect on the red soil spectrum.

土壤中水分 、 有机质和氧化铁的含量对其光谱特征有很大影响.

The organic matter in soil contains a small but fairly uniform proportion of phosphate.

土壤有机质中含有少量的磷酸盐,且其比例始终不变.

Improve the soil by adding organic matter .

加入有机物以改良土壤。

The content of soil organic matter ( SOM) was the important index for soil fertility.

有机质含量高低是土壤肥力水平高低的重要标志。

Improve the soil by adding organic matter.

加入有机物以改良土壤。

Red soil lacks organic matter.

红土缺乏有机物质.