REAKSIYaI KhOK

REAKSIYaI KhOK, khususiyati fizikiyu khimiyavii khokro guyand, ki ba mavjudiyati ionhoi N+ va ON— vobasta ast. Agar dar khok ionhoi N+ afzaliyat doshta boshand, Reaksiyai khok tursh meshavad; agar ionhoi ON— ziyod boshand —ishqori; hangomi barobarii [N+] va [ON—} Reaksiyai  khok mutadil megardad. Darajai rN dar Reaksiyai khokhoi Soyuz Sovetskikh Sosialisticheskikh Respublik SSSR az 4 to 8,2 (nigared Turshii khok) tagyir meyobad. Reaksiyai khok  dar kuchi (migra- siyai) masolehi bodkhuri roli kalon mebozad, ilova ba in qobiliyati mitrasionii payvasthoi Ge, Mp, 8g, Si dar muhiti tursh va payvasthoi $1 va A1 dar muhiti ishqori ziyod meshavad. Reaksiyai khok R ba darajai faoliyati hayoti rastani tasiri kalon merasonad. Hangomi Reaksiyai khoki tursh bisyor rastaniho az ziyodii ionhoi[N+] va [A1³+] zarar mebinand. Binobar in ba khoki tursh ohak andokhtan za- rur ast (nigared Ohakandozi). Khoki serishqor (shurkhok, shurzamin) doroi konsentrasiyai balandi ionho[ON~] buda, baroi sabzishu inkishofi rastani nihoyat nomusoid ast. Bo nurihoi organiki ba zamin andokhtani gach (nigared Gachandozi) boisi mutadil shudani reaksiyai ishqori va behtarshavii khususiyathoi khok meshavad. Baroi bahoi mikdori ba Reaksiyai khok  dodan az nishondihandahoi zerin istifoda mekunand: rN-i suspenzidi khok dar ob yo mahluli KS1; kislotanoki b ishqornoki va gayra. Nigared ,nishondihandai gidrogeni.

Adabiyot: S e r d o b o l s k i y I. P., Metodi opredeleniya rN i okislitelno- vosstanovitelnogo potensiala pri agrokhimicheskikh issledovaniya, dar kitobi. Agrokhimicheskie metodi issledovdniya pochv, Moskva, 1960; R o d e A. A., Smirnov V. N., Pochvovedeniya, Moskva, 1972; K o v d a V. A., Osnovi ucheniya o pochvakh, kn. 2, M., 1973.