Open AccessHumus substances content in agrochernozems using for cultivation of oilseeds in the Kansk forest-steppe
Author(s) -
O. A. Vlasenko,
Н. Л. Кураченко,
O. A. Ulyanova,
В. В. Казанов,
F. Kh Khalilzoda
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/548/6/062043
Subject(s) - humus , rapeseed , agronomy , carbon fibers , water content , soil carbon , organic matter , total organic carbon , environmental science , steppe , chemistry , soil water , soil science , environmental chemistry , biology , mathematics , ecology , geology , geotechnical engineering , organic chemistry , algorithm , composite number
The agrochernozems of the Kansk forest-steppe used for the cultivation of rapeseed and camelina were characterized by a high humus content both in the 0–20 and 0–40 cm layer. The carbon content of humus (C humus ) (D ump ) and carbon of water-soluble organic matter (CH 2 O) had a weak spatial variability (Cv = 1.3-11.7%), the content of carbon extracted with 0.1 n alkali (C 0.1 n NaOH ) had an average and very high degree of spatial variability (Cv = 18.7-66.1% ) The heterogeneity of the soil cover was a factor determining the average statistical decrease in the content of stocks of all fractions of humic substances, with the exception of water-soluble carbon of humus. Fields with a pronounced meso- and microrelief and the presence of thinner types of agrochernozems are recommended for use for the cultivation of camelina, as a crop less demanding on soil conditions than rape.