Drozd O. Аgrotransformed soils of Solonetzik Complexes the Dry-Steppe zone of Ukraine

Object - soil properties changes on agrotransformed soils of solonetzic complexes Dry Steppe Zone of Ukraine and term of duration ameliorative deep plowing. The purpose - to establish laws of properties changes and an evolution direction agrotransformed soils of solonetzic complexes Dry Steppe Zone of Ukraine. Methods - field and laboratory-analytical researches, methods of variation, correlation and dispersive analyses. Theoretical results - on the basis of complex studying agrotransformed soils of solonetzic complexes Dry Steppe Zone of Ukraine properties in irrigated and not irrigated conditions the direction of their evolution is established. It is defined, that disposable application meliorative deep ploughing for cure solonetzic soils with calcium carbonates on depth of 40-50 cm provides positive effect on soils properties and agricultural crops throughout 50 years. Practical results - the system of an estimation of soils suitability for carrying out ameliorative deep ploughing is improved. The model of agricultural crops productivity on deep ploughed solonetzic soils is created. Results of research are used by working out of modern is standard-methodical base on solonetzic soils fertility protection and management. Novelty - consists in an establishment soil processes laws of changes on agrotransformed soils of solonetzic complexes Dry Steppe Zone of Ukraine which are shown in desalinization and desolonetzization, and in deep ploughed soils in improvement of agrophysical properties also, and the direction of evolution investigated soils is defined. For the first time it is proved, that disposable carrying out meliorative deep ploughing makes positive effect on soils properties and agricultural crops productivity is throughout 50 years. Its positive effect termination till this time is noted. It is revealed, that the result of deep ploughing are formations high-efficiency and ecologically proof agrotransformed soils which have no analogues in the nature for morphological, agrophysical, the physicist-chemical and is capable to provide high efficiency of agricultural crops in Dry Steppe of Ukraine conditions. Degree of application - results of work is recommended for use at carrying out of meliorative deep ploughing and solonetzic soils monitoring. To the state committee of Ukraine for land resources suggested to carry deep ploughed solonetzic soils to a categopry of especially valuable soils. Separate positions of dissertational work can be used in educational process at teaching of disciplines from soil science and soils protection. The field is agricultural and nature protection.