Abstract
Currently, a significant part of arable lands of Khakassia (59%) is in the fallow state, and the overutilized lands are depleted, or subjected to deflation and erosion. For a more accurate assessment of the productivity of fallow lands for their development, it is necessary to calculate the normative yield (Un) on the basis of climatic indicators and modern soil quality. The research was carried out on fallow lands (preserved arable lands, 1996-1998) in different geographical areas of the Chernozem zone in Khakassia, at latitudes of 52.7 to 54.6. The bioclimatic potential was established: the coefficient of continentality of the climate varies from hard to extremely continental (193-226), the moisture ratio according to N.N. Ivanov in the forest steppe is not enough moistened (1.01-0.98), in the true steppe - arid (0.67-0.85). The Agro-climatic potential (AP) of the Chernozem zone in the Republic varies from 4.1 to 5.9, and on average 2 times lower than the base value (AP 10). According to the bioclimatic indicators (AP and Un), there are three different areas in the Republic: 1) forest steppe (AP - 5.6 and Un - 2.2-3.1 t/ha); 2) foothill steppe of Western Sayan (4.9 and 2.2-2.5 t/ha); foothill steppe of Kuznetsk Alatau and Altai central steppe (AP - 4,1 and Un - 0,9,1,8 t/ha). The quality of the soils degrades in the following order: foothill-steppe of Western Sayan and low-hill terrain steppe of Batenevsky Ridge > true foothill steppe of Western Sayan > foothill steppe of Kuznetsk Alatau > true foothill steppe of Kuznetsk Alatau > true steppe of the Central part of the Republic (Altaysky District). Thus, sustainable production of grain crops is possible in the first two agro-climatic regions. Chernozem developed from aeolian deposits and averagely salted with low bioclimatic potential (AP - 4.1; Un - 1.1 t/ha) is limited arable land for the development. The use of arable lands for the production of feed with a high proportion of perennial grasses is possible only after soil-protective and meliorative activities.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
