Polukhov A. The increasing the fertility and productivity of dark chestnut soils in rice irrigation systems

The object of researches is Processes of forming of fertility and productivity of the protractedly irrigated livery soils in the conditions of rice crop rotations. Purpose of researches - estimation of the modern state and efficiency of the use of the protractedly irrigated livery soils in the conditions of DEWS and scientific ground of ekologo-agromeliorativnih measures on the rise of their fertility and productivity. Methods of researches - the field; laboratory; experimental, history, statistical; computation. Results of researches - For a theory: Estimation of the modern state of livery soils of rice crop rotations, which was formed under act of 50-th annual intensive irrigation and efficiency of their use, is first given. The modern level of productivity of chestnut soils is definite and the ways of his rise on rice crop rotations with saving of fertility of soils are developed. For practice: It is developed recommendations in relation to the guard of environment, rise of fertility and productivity of soils; in their use at alteration of the Government program of development of Ukrainian having a special purpose sat down on a period to a 2015 year for providing of permanent and effective production of rice. The sphere of the use is the agricultural enterprises of south of Ukraine.