With the appearance of satellite navigation and powerful computers at agricultural enterprises there is the opportunity using fertilization to account for spatial heterogeneity of fertility of fields in Western Siberia. The aim of the research was to study the content of nitrate nitrogen in arable chernozyom when using the targeted application of fertilizers on the planned yield of spring wheat. The experiments were conducted in the forest-steppe zone of the Trans-Urals on the field with strongly expressed in fertility of the spatial heterogeneity. The nitrate con-tent in the 0-40 cm layer before sowing of grain crops varied in the range of 7-20 mg/kg, the coeffi-cient of variation was 26 %. It was found out that making the average doses of fertilizers on the planned yield of 3.0 t/hectare of spring wheat grain increased the heterogeneity of the field of nitrates. This led to the formation of the harvest from 2.4 to 3.1 t/hectare within the same field. Differentiated application of fertilizers on the planned yield of 3.0 t/hectare in the "off line" reduces and supports throughout the growing season the uniformity of the field on the content of nitrate nitrogen. The coeffi-cient of spatial heterogeneity by the time of tilling decreased from 35 to 25 %, and the grain harvest reached a minimum value the experience of 9 %, which is consistent with minor variation. Further increase of doses of mineral fertilizers led to the emergence in the field of elementary sections with markedly different properties. It was established that for the calculation of doses of fertilizers when using differential fertilizer use data for nitrate nitro-gen is not enough.
space agriculture, precision agricul-ture, differentiated application of fertilizers, spatial heterogeneity of fertility, coefficient of variation, statistical analysis, nitrate mode
1. Loginov Yu.P., Kazak A.A., Yudin A.A. Sor-tovye resursy yarovoy myagkoy pshenicy v Zapadnoy Sibiri i sovershenstvovanie ih na perspektivu // Sib. vestn. s.-h. nauki. - 2012. - № 3. - S. 18-24.
2. Sidorov A.V., Neshumaeva N.A., Yakubyshina L.I. Sozdanie novyh sortov yarovogo yachme-nya dlya ispol'zovaniya na kormovye celi // Vestnik KrasGAU. - 2016. - № 2 (113). - S. 148-152.
3. Ostapenko A.V., Tobolova G.V. Primene-nie metoda elektroforeza prolaminov ov-sa dlya opredeleniya gibridnoy prirody zeren F1 // Vestnik KrasGAU. - 2017. - № 2 (125). - S. 14-21.
4. Abramov N.V., Eremina D.V., Eremin D.I. Agroekonomicheskoe obosnovanie primene-niya mineral'nyh udobreniy pod yarovuyu pshenicu v Severnom Zaural'e // Sib. vest-nik s.-h. nauki. - 2010. - № 5. - S. 11-17.
5. Izmenenie biologicheskih i agrohimiche-skih svoystv agrochernozema pod deystviem udobreniy v Krasnoyarskoy lesostepi / O.A. Ul'yanova, O.P. Gorlova, N.L. Kurachenko [i dr.] // Plodorodie. - 2015. - № 2 (83). - S. 41-44.
6. Eremin D.I. Izmenenie soderzhaniya i ka-chestva gumusa pri sel'skohozyaystvennom ispol'zovanii chernozema vyschelochennogo lesostepnoy zony Zaural'ya // Pochvovede-nie. - 2016. - № 5. - S. 584-592.
7. Sinyavskiy I.V. Sostoyanie plodorodiya pochv i ekologicheskaya ustoychivost' agro-landshaftov Chelyabinskoy oblasti // Agro-prodovol'stvennaya politika Rossii. - 2015. - № 1 (13). - S. 2-7.
8. Rzaeva V.V., Eremin D.I. Izmenenie agro-fizicheskih svoystv chernozema vyschelo-chennogo pri dlitel'nom ispol'zovanii razlichnyh sistem osnovnoy obrabotki i mineral'nyh udobreniy v Severnom Za-ural'e // Vestnik KrasGAU. - 2010. - № 6. - S. 32-46.
9. Kurachenko N.L., Hizhnyak S.V. Prostranst-vennoe var'irovanie strukturno-agregatnogo sostava chernozemov i seryh lesnyh pochv Krasnoyarskoy lesostepi v predel'no odnorodnyh usloviyah pochvoob-razovaniya // Vestnik Altayskogo gosudarst-vennogo agrarnogo universiteta. - 2010. - № 1 (63). - S. 35-40.
10. Kurachenko N.L., Bopp V.L. Dinamika ugle-roda vodorastvorimogo gumusa v chernozeme obyknovennom pod chistymi i binarnymi posevami donnika // Sib. vestnik s.-h. nau-ki. - 2016. - № 5 (22). - S. 14-20.
11. Abramov N.V., Sherstobitov S.V., Abramov O.N. Differencirovannoe vnesenie mi-neral'nyh udobreniy s ispol'zovaniem kosmicheskih sistem // Agroprodovol'st-vennaya politika Rossii. - 2014. - № 2 (14). - S. 2-8.
12. Eremin D.I., Pritchina G.T. Optimizaciya azotnogo pitaniya yarovoy pshenicy dlya po-lucheniya prodovol'stvennogo zerna // Zer-novoe hozyaystvo. - 2005. - № 7. - S. 11.
13. Shahova O.A., Eremin D.I. Osobennosti mineral'nogo pitaniya yarovoy pshenicy v usloviyah vnedreniya resursosberegayuschih tehnologiy v lesostepnoy zone Severnogo Zaural'ya // Vestnik KrasGAU. - 2007. - № 1. - S. 149-152.
14. Eremin D.I. Vliyanie dlitel'nogo ispol'-zovaniya organo-mineral'noy sistemy udobreniy zernovogo sevooborota na di-namiku podvizhnogo kaliya chernozema vy-schelochennogo // Plodorodie. - 2016. - № 2 (89). - S. 28-31.
15. Abramov N.V., Semizorov S.A., Sherstobi-tov S.V. Zemledelie s ispol'zovanie kosmicheskih sistem // Zemledelie. - 2015. - № 6. - S. 13-18.
16. Abramov N.V., Eremin D.I. Azot tekuschey nitrifikacii i hozyaystvennyy vynos kak faktor programmirovaniya urozhaynosti yarovoy pshenicy v usloviyah Severnogo Za-ural'ya // Sib. vestnik s.-h. nauki. - 2009. - № 2. - S. 25-29.
