Phaeozem - Wikipedia
网页A Phaeozem in the World Reference Base for Soil Resources (WRB) is a dark soil with a high base status, but without a secondary carbonates within one metre of the soil surface. Most Phaeozems correlate with the Udolls (Mollisols) of the USDA soil taxonomy. [1] [2]
Phaeozem | Organic Matter, Clay & Humus | Britannica
网页Phaeozems are characterized by a humus -rich surface layer covered in the natural state with abundant grass or deciduous forest vegetation. They are highly arable soils and are used for growing wheat, soybeans, and pasture for …
Phaeozems - ISRIC
网页Characteristics. Soils having. a mollic horizon (deep, brownish or blackish surface horizon with a significant accumulation of organic matter and high base saturation); a base saturation of 50 percent or more between 25 and 100 cm from the soil surface;
Ecological detoxification of methamidophos by earthworms in phaiozem …
网页2008年9月1日 · Samples of the tested soil, phaiozem (black soil), as a typical zonal soil in northeast China, were collected from a fallow field (47°26′N, 126°38′E) in the Hailun Station of Agro-ecological Experimentation, Chinese Academy of Sciences, which is situated at Hailun County, Heilongjiang Province, China.
Phaeozem - an overview | ScienceDirect Topics
网页Phaeozem - an overview | ScienceDirect Topics. In subject area: Earth and Planetary Sciences. RSG: Phaeozem: having a mollic horizon, a high base saturation throughout the first 100cm and no secondary carbonates until at least 50cm below the lower limit of the mollic horizon. From: Reference Module in Earth …
Toxic effects of acetochlor and methamidophos on earthworm …
网页The single toxic effect test showed that the two agrochemicals had their toxicity to the earthworms living in phaiozem. Acetochlor had a stronger acute toxic effect on the earthworms than methamidophos.
Ecological detoxification of methamidophos by earthworms in phaiozem …
网页2008年9月1日 · In view of the ubiquitous co-existence of methamidophos, acetochlor and copper (Cu) in agricultural soils, ecological detoxification of methamidophos in phaiozem by earthworms was examined using the …
[Degradation-detoxification behavior of methamidophos in phaiozem …
网页An accelerated degradation of methamidophos in soybean rhizospheric soil was observed, especially in phaiozem. At the 9th day of incubation, the insecticide residue in the middle rhizobox phaiozem and burozem with soybean was decreased by 87.5% and 76.0%, respectively, compared with that of the control.
SPECIATION DISTRIBUTION AND BIOACTIVITY OF HEAVY
网页Results indicated that the species distribution of heavy metals in clean phaiozem was residue bound to organic matters bound to Fe-Mn oxides bound to carbonates exchangeable fraction. Pollution occurring would change the general distribution trend and increase the exchangeable…
Single and combined pollution of methamidophos, acetochlor and …
网页Taking phaiozem as a tested soil, the earthworm Eisenia foetida was exposed to single and binarily\|combined contamination of methamidophos, acetochlor and copper (Cu). The single toxicity test for single pollutant showed that the three chemicals has the following ranking of toxicity to earthworms: methamidophosacetochlorCu.