Аграрный вестник Урала № 08 (114) 2013Лесное хозяйство
Increase of soil fertility and productivity of forest planting material in the forest nursery “Ak kayyn” of the Republic of Kazakhstan
The article analyzes the mechanical and physical and chemical properties of soils in the forest nursery “Ak kayyn” of the Republic of Kazakhstan. It was established that dark chestnut saline soils occupy 25 % of nursery territory. To grow the planting stock on these soils with modern agrotechnics is rather problematic even with the use of mineral fertilizers. The cause of low suitability of dark chestnut saline soils is ability to form crust. Cracks are formed in dry seasons as a result of shrinkage. These cracks are filled with surface horizon substances. When the soil is moistened the cracks are compressed and “excess material” in the lower part of the profile creates pressure causing displacement of soil blocks, and forming a sliding surface and microrelief “chillegay”. As a result of these instigations it was established that introduction of ameliorants can ensure the elimination of soil crust on dark chestnut soils. Optimum results during model experiments were obtained with simultaneous application of phosphogypsum and ash on the basis of 20 and 10 t/ha accordingly.
dark chestnut soils, soda-saline solonetzic soils, melioration, ameliorants phosphogypsum and ashy waste of CHP
1. Samoilov EM Slitozemy, and fusion of the soil. Moscow, 1990.
2. Hitrov NB genesis, diagnosis, and operation of the properties of swelling clay soils of the Central Caucasus. Moscow, 2003.
3. Kahn V. Temporary guidelines for conducting soil reclamation research, drafting of construction documents and reclamation saline and soda-irrigated saline soils of the Kazakh SSR.
4. Akhanov J. W., Kang, VM, Bakenov KZ method of reclamation of saline soda-alkaline soils. Author's Certificate of the USSR State Committee for Inventions and Discoveries number 1475910 on January 3, 1989
5. Uvarov, VI, Iotov A. Influence of different ways of treatments on soil fertility of Krasnodar Region / / Soil Science. 1983. Number 7.