Voronyuk Z. Improvement of the elements of a resource-saving technology of rice cultivation

Object of researches: process of formation and realization of potential of efficiency of plants and qualities of grain of rice depending on agroecological and agrotechnical factors. Purpose of researches: substantiation and development of agromethods of sowing complex, elements of rrigation mode for improvement of rice cultivation technology in direction of resource and ecological-saving . Methods of researches: field, vegetative, laboratory and methods of mathematical statistics. Results of researches: 1) for a theory - new scientific data on biologists of rice seeds germination under condition of different deep arrangements on profile of arable soil horizont and formation of seedlings are received at use of different irrigation modes; 2) for practice - at cultivation of rice variety Spalchik is recommended to apply a ssurface seeding method, in terms on April 25 - on May 10, seed rate 8 million. grains per hectar and a mode of an irrigation on type " non-stop flooding" that provides reception of stable yield with high-quality grain from above 7 t/ha at decrease in expenses for 10 % and increase of production profitability on 32,4 - 33,0 %, and also decrease in pesticidal loading on rice agroecological system. Sphere of use: substantive provisions of researches can find practical use in ricegrowing economy with different patterns of ownership in southern region of Ukraine.