Влияние длительного орошения на почвенные процессы Шерабадской степи и пути повышения их плодородия

Аннотация

Subjects of research: irrigated sails of Sherabad steppe. Purpose of work: Studying of the basic physical, water-physical, physical-chemical and agrochemical properties and modern soil-meliorative condition of irrigated soils of the steppe, definition of salty soils territory changes under influences of the long period of irrigation, division of grounds on agro-industrial groups, an establishment of optimum norms of phosphogyps and development of scientifically based recommendations on improvement of soil fertility. Methods of research: works on soil researches were performing at 3 stages: field researches, permanently - field experiences and cameral works. The basis of method also make soil - geochemical, soil - geographical, comparative-geographical, soil -cartographical, laboratory-analytical and phonological methods, and also the methods of statistical processing of resits. The results obtained and their novelty: given the detailed characteristic of the basic properties of Sherabad plain, studied their modem meliorative condition, revealed the salty soils areas changes under the influence of a long irrigation, beliohtened the mechanism of salinity, desalinity and accumulation of salts in soil grounds and groud waters. The soil fund of Kizirik district on salinity is, revealed, agro-industrial groups with recommendation demanding agro-technical and meliorative action are grouped. Made a cartogram of salinity of soil economies, at experiences are established optimum norms of carrying in phosphogyps. Practical value: rational and effective apply of research results and scientifically -groundad recommendations allow to optimize water - salt balance of territory, increose fertility and harvest of agro crops. Degree of embed and economic effectivity: results of research are handed to management of rural and water economy of Kizirik district for introduction into manufacture. The given theme is done under the order of the Center on sciences and technologies of the Republic of Uzbikistan (task № P.-l 1.-116) and has passed timely a corresponding approbation. Field of application: Agriculture and Maximum and средне-special educational institutions of an agricultural structure.