COMPARATIVE STUDY OF THE INFLUENCE OF DRIP IRRIGATION AND IRRIGATION BY THE METHOD OF PERMANENT FLOODING OF RICE ON VARIOUS FORMS OF NITROGEN IN RICE-BOGS SOILS

The article presents the results of a comparative study of the effect of drip irrigation of rice and irrigation by the traditional method of constant flooding on various forms of nitrogen in ricemarsh soils. It was found that with drip irrigation, the content of total nitrogen changed in small ranges in the tillering phase, then a gradual decrease is observed towards the end of the growing season, and with constant flooding, it remained stable until the end of the growing season in low limits. The content of nitrate nitrogen under drip irrigation exceeds its content under constant flooding. This is primarily due to the water layer on the control variant with constant flooding, which during the growing season leaches nitrate nitrogen from the arable soil layer into the underlying horizons. The content of ammonia nitrogen changes synchronously according to the patterns of nitrogen consumption in the phases of rice vegetation, regardless of the method of irrigating rice. It has been established that the content of alkaline hydrolysable nitrogen with drip irrigation is two times higher than with constant flooding. This is explained by the same conclusions made earlier, where the main factor influencing the nitrogen content is water, which under drip irrigation increases the activity of anaerobic living organisms, which in turn serves as the foundation of alkaline hydrolysable nitrogen. The content of easily hydrolysable nitrogen has little difference between the permanent flooding and drip irrigation.

1. Ibrayeva M.A. Aқparat. Kүrіshtі Aқdala suarmaly alқabynyң tұzdanғan topyraқtary zhaғdayynda tamshylatyp suarudy өndіrіstіk synaқtan өtkіzu zhұmystary turaly mәlіmet// Pochvovedeniye i agrokhimiya. - 2018. - №3. - S. 87-89.

2. Ibrayeva M.A., Saparov A.S., Otarov A., Beysenova G.O., Suleymenova A.I. Sravnitelnoye izucheniyevliyaniye kapelnogo orosheniya i orosheniya postoyannym zatopleniyem na soderzhaniye osnovnykh elementov pitaniya v risovo-bolotnykhpochv// Pochvovedeniye i agrokhimiya. - 2018. - №2. - S. 47-58.

3. Smirnova N.N. Udobreniye risa. - M.: Rosselkhozidat, 1978. – 64 s.

4. Nikolayeva S.A., Maynasheva G.M. Dinamika pitatelnykh elementov v chernozyomnykh pochvakh, ispolzuyemykh pod kulturu ris//Khimiya pochv risovykh poley. - M.: Nauka, 1976. - S. 75-89.

5. Neunylov B.A. Povysheniye plodorodiya pochv risovykh poley Dalnego Vostoka. - Vladivostok: Primorskoye kn., 1961. – 239 s.

6. Sharapov I.D. Okislitelno-vosstanovitelny potentsial v pochvakh risovogo sevooborota// Izvestiya AN Kaz SSR, Ser. botaniki i pochvovedeniya. - 1960. - Vyp.3. - S. 19-28.

7. Boldyrev A.I. Risovym polyam-vysokoye plodorodiye. Simferopol: Krym, 1969. – 208 s.

8. Pivovarov L.P. Redoks-protsessy v pochvakh risovykh poley. - Alma-Ata: Nauka KazSSR, 1984. – 166 s.

9. Sheudzhen A.Kh., Kizinek S.V. Udobreniye risa. - Maykop: GURIPP "Adygeya", 2004. – 148 s.

10. Suleymenova A.I., Otarov A., Ibrayeva M.A., Vyrakhmanova A.S., Poshanov M.N. Vliyaniye kapelnogo sposoba orosheniya risa na velichinu okislitelno-vosstanovitelnogo potentsiala pochv// Pochvovedeniye i agrokhimiya. - 2020. - №1. - S. 5-15.

11. Barber S.A. Biologicheskaya dostupnost pitatelnykh veshchestv v pochve. - M.: Agropromizdat, 1988. – 376 s.

12. Izmaylov S.V. Azotny obmen v rasteniyakh. - M.: Nauka, 1986. – 320 s.

13. Osmolovskaya N.G. Osobennosti poglotitelnoy deyatelnosti i ionny sostav rasteny pri ispolzovanii ammonynoy i nitratnoy form azota// Azotnoye pitaniye i produktivnost rasteny Tr. Biol. NII. – L.: Izd-vo Leningr. Un-ta, 1988. – № 39. – S. 66–95.

14. Aytbayev M. Vliyaniye azotnykh udobreny na urozhay risa v usloviyakh KzylOrdinskoy oblasti Trudy Instituta pochvovedeniya Tom 17. «Problemy osvoyeniya nizovyev Syr-Daryi pod risovoye khozyaystvo». - Alma-Ata, 1969. - S. 141-143.

15. Nekrasova T.F. Zapasy pitatelnykh veshchestv v pochvakh Kzyl-Ordinskoy oblasti ispolzuyemykh pod ris. Trudy Instituta pochvovedeniya Tom 17. «Problemy osvoyeniya nizovyev Syr-Daryi pod risovoye khozyaystvo». - Alma-Ata, 1969. - S. 125-133.