Soil physical structure causes differential accessibility of soil organic carbon (SOC) to decomposer organisms and is an important determinant of SOC storage and turnover. Techniques for physical fractionation of soil organic matter in conjunction with isotopic analyses (δ 13C, δ 15N) of those soil...
This article is available as a PDF only.doi:10.1097/00010694-192902000-00007MULLERJ. F.Soil enceMuller, J. F., The influence of organic matter and lime on soil moisture and on the percentage of carbon and nitrogen in field soils. Soil Sci. 27 , 137–141 (1929)....
A.has nothing nutritious added to itB.is essential for producing fruit and vegetablesC.contains unused vegetable matterD.has had chemicals and fertilizers added to it相关知识点: 试题来源: 解析 B题目问:富含有机物的土壤怎么样?从第二段“fruit and grain which have been grown in soil that is ric...
Organic matter improves virtually any soil structure. It increases core space in heavy, dense soil and fills in gaps in sandy soil that may be prone to drought. Organic matter also increases populations of benef 合并有机物到您的土壤里。 有机物的例子包括泥炭沼、肥料和天然肥料。 有机物改进...
Soil organic matter is important in relation to soil fertility, sustainable agricultural systems, and crop productivity, and there is concern about the level of organic matter in many soils, particularly with respect to global warming. Long-term experiments since 1843 at Rothamsted provide the longest...
题目:“Soil organic matter: amid exciting new soil carbon research don’t forget the basics” 报告人:Professor DAVID POWLSON(University of Reading, UK, and Southwest University, Chongqing, China) 时间:2021年4月30日(周五) 20:30 主办方:Frontiers of Agricultural Science and Engineering (FASE) 编...
With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fract...
aOrganic matter improves virtually any soil structure. It increases core space in heavy, dense soil and fills in gaps in sandy soil that may be prone to drought. Organic matter also increases populations of beneficial soil microbes that encourage plant growth and fight off pests and diseases. 有...
Changes in tropical land use have profound effects on soil organic matter (SOM) status. It has been suggested that alterations in the different fractions of SOM are more effective in indicating changes in soil use than total soil organic matter content. The main objective of this study was to...
(1953)described 34 different profile types dominated by horizons rich in soil organic matter. The main types includemoder, mull, mull-like moder, gyttja, dy, anmoor and raw, raw-soil and tangel humus. Most of these types are discussed in the following sections. Since the work ofKubiën...