Open AccessAgroecosystem Stability In Spring Wheat Crops With The Application Of Fertilizers And Microbial Biological Products
Author(s) -
А. А. Алферов,
Л. С. Чернова
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/901/1/012066
Subject(s) - agroecosystem , mineralization (soil science) , agronomy , nitrogen , rhizosphere , environmental science , growing season , biomass (ecology) , nitrogen cycle , chemistry , biology , ecology , genetics , organic chemistry , bacteria , agriculture
The formation of spring wheat biomass on sod-podzolic soil is carried out mainly due to soil nitrogen, the share of which reaches 1/3 of the total removal of the element when using mineral fertilizers. Inoculation of spring wheat seeds with biologics of rhizosphere microorganisms increases the nitrogen content of fertilizers to 7.3%, increases its immobilization by 5.9-6.7% and reduces losses by 7.4-13.9%. The stability of the agroecosystem is characterized by nitrogen flows. During the growing season of spring wheat with a hydrothermal coefficient of 1.55-1.72, the amount of mineralized nitrogen (mineralization (M)), depending on fertilizers, reaches 9.4-11.1 g/m 2 , while the reimobilized nitrogen (reimobilization (RI)) – 2.2-3.1 g/m 2 , net-mineralized (net-mineralization (N-M)) – 6.8 - 8.0 g/m 2 . The use of nitrogen fertilizers and biological products leads the agroecosystem to the resistance mode (the maximum permissible level of exposure) (RI : M = 27-28%, N-M : RI = 2.5-2.7).