Improvement of crop rotations aimed at increasing their efficiency and conserving soil fertility in conditions of biological intensification
Improvement of crop rotations aimed at increasing their efficiency and conserving soil fertility in conditions of biological intensification
Blog Article
The long-term research conducted in 2002-2017 in a long stationary experiment on studying different types of field crop rotations under conditions of the Kirov region showed that on sod-podzolic soils the loss of humus could be lowered using agro technical methods.The most critical of them include the reduction of a portion of bare fallow, transition to sown and green-manure fallow, expanded use of perennial legume and grain-legume crops and intercrop sowings.In eight-field crop rotations when using such means of a biologization as plowing of the root-stubble residues, aboveground mass of green-manure crops in fallow fields and intercrop sowings, the supply of organic substance was within 17.24-83.
03 t/ha.By mineral-ization of this substance 7.64-11.51 t of humus were Estimating the efficacy of community-wide use of systemic insecticides in dogs to control zoonotic visceral leishmaniasis: A modelling study in a Brazilian scenario. produced.
In a crop rotation with bare fallow there is a negative balance of humus of -0.06 t/ha.The positive balance is obtained when using sown, green-manure fallows, intercrop sowings (two-three fields), and introduction of up to Biochemical Features of the Cry3A Toxin of Bacillus thuringiensis subsp. tenebrionis and Its Toxicity to the Red Imported Fire Ant Solenopsis invicta 25% perennial legumes to the structure of crop rotations.The formation of 0.
96-1.44 t/ha of humus in the arable layer provides positive balance of 0.20-0.72 t/ha.
The increase of the part of grain crops up to 62.5-75.0% in the structure of crop rotations resulted in rise of their efficiency up to 4.74-4.
79 thousand fodder units.It was 0.27-0.32 thousand fodder units higher than in the control crop rotation with bare fallow.
Dependence of productivity of agricultural crops on humus content was insignificantly negative (r = -0.16).The efficiency of the studied crop rotations depended considerably on the amount of productive moisture in the soil in a phase of ear formation of grain crops (r = -0.78) and on biological activity of the soil (r = -0.
80).