Assessment of the invertase activity of agrochernozem when using resource-saving processing technologies

The aim of the study is to investigate the dynamics of invertase activity of agrochernozems and its de-pendence on soil properties and agroecological conditions of the agrolandscape using moldboard and sur-face tillage methods in the conditions of the Krasnoyarsk forest-steppe. Observations were carried out in crops of a production experiment laid out in the SPK Shilinskoye in the Krasnoyarsk forest-steppe (56°37' N and 93°12' E). The methodological approach used in the work was the use of multiple correlation analysis using the beta coefficient, which allows assessing the contribution of each studied factor. The soil of the experimental plot is leached high-humus chernozem, medium-deep, light clayey on red-brown clay. Field observations were carried out in the following variants: 1 – autumn plowing (moldboard); 2 – surface dis-king; 3 – direct seeding. In the soil of the studied experimental variants, a weak (poor) level of invertase activity of agrochernozem was revealed, which indicates a deficiency of disaccharides in the studied soil. The nature of spatial variation of biochemical hydrolysis of carbohydrates was characterized by high va-lues. The values of invertase activity were statistically significantly determined by the temporal dynamics of hydrothermal conditions, and the nature of this influence often had an inverse relationship: in cool seg-ments of the vegetation periods, the level of invertase activity increased. The dynamics of invertase activity under conditions of using a moldboard plow was determined by the transformation of organic compounds passing into the aqueous extract. When using minimum and zero technology of tillage of agrochernozem, a significant effect of the "temperature" factor on the course of invertase activity was revealed. In the sub-seed layer of the soil of these variants, a significant role in the biochemical activity of carbohydrate conver-sion is played by the mobile fraction of easily mineralized organic matter.