Salmanov Z.S., Gashimova U.F., Miroshnikova E.P., Ponomarev S.V., Fedorovykh Yu.V.
MORPHOMETRIC FIGURES OF PERSIAN STURGEON BROODSTOCK OF HILINSKI STURGEON HATCHERY ^{[№ 5 ' 2016]}
For a long time the decision on necessity of creation of sturgeon broodstock at the existing sturgeon hatcheries (SH) on reproduction was extremely difficult in biological terms and costly in economic. However, the catastrophic decline of natural sturgeon stocks in the Caspian Sea forced the experts to reconsider their opinion on the question of the formation of broodstock, as SH began to feel the acute shortage of breeders. Persian sturgeon lives mainly in the middle and South Caspian, preferring the warmer water. The Persian sturgeon catches are dramatically reduced. While fishing in the sea near the Iranian coast, when caught immature fish, the number of the spawning population is reduced, resulting in reduced volumes of natural reproduction. In Persian sturgeon, in contrast to the Russian, more elongated body with a bluish tint, with a longer head component to 17.6 % of body length, and a bigger snout and postorbital space. The building has a distinctive snout: in profile it is clearly bent downwards and comparatively short and pointed, but more bulky than that of the Russian sturgeon. Persian sturgeon is different from Russian also a relatively large thickness and volume of the body. The aim of this work was carried out to characterize the morphometric parameters of the Persian sturgeon Hilinski SH, Republic of Azerbaijan. Work on the formation of broodstock in terms of Hilinski SH began from annual fish of age with an average weight of 54.5  ± 1.2 age fish renovation group morphological indices were little changed, with the exception of data related to body length, height and width of the head. Morphometry data obtained in the further cultivation of broodstock confirm the previous conclusion that with age, growth in length is reduced, increasing the girth of the body, which is supported by data length to end of middle beam, antianal distance, anteventral distance. The indicators characterizing the size of the parts of the head should be considered as species specific differences.

Khasanova R.F., Suyundukov Ya.T., Salmanova E.F.
OPTIMIZATION OF SOIL HUMUS CONDITION STEPPE AGROECOSYSTEMS ^{[№ 10 ' 2015]}
The development of virgin land and arable use leads to a decrease of humus content in the soil, which is accompanied by the gradual destruction of valuable units and leads to the development of erosion processes, degradation of vast areas of steppe ecosystems. Restoration of disturbed steppe ecosystem is to recover as the natural vegetation and soil steppes. Perennial grasses form a large amount of organic matter and promote the formation of humus, activate vital activity of the soil microflora, provide cycling of matter, the formation of soil aggregates, and others. Thanks to a strong root system of perennial grasses also provide erosion protection of the humus layer of the flushing and blowing. The research is devoted to studying the role of perennial grasses to stabilize the soil with humus Zauralye the Republic of Bashkortostan. It was revealed that under perennial grasses, especially under the natural grass communities there is an intensive restoration of humus, which is closely correlated with the parameters of a biomass plant. Increased humus content decreasing the size of the units is accompanied by an increase in their water stability (r = 0,62). Introduction to the field crop rotations sown perennial grasses allows 2–3 years to increase the humus content in the soil at 0.3–0.5 %. Create Agrostep contributed to the restoration of natural vegetation and a positive balance of humus, the soil close to the virgin nature of the content and profile distribution. The most effective humification process occurs under steppes in the version with 4-kratnym disking on the background of fertilizers.

Suyundukov Ya.T., Khasanova R.F., Salmanova E.F.
PHYTOMELIORATIVE WAY OF REMEDIATION OF SOIL PROPERTIES OF STEPPE ECOSYSTEMS ^{[№ 6 ' 2014]}
Influence of sown perennial herbs and herbs from among of natural communities on agrophysical properties of Chernozems of Trans-Ural of the Republic of Bashkortostan (RB) is studied. Effective phytomeliorants for restoration of Chernozems in a North-South gradient are revealed. Restoration of the degraded soils' properties of agroecosystems of Trans-Ural of the RB under the agrosteppes created by the Dzybov method is investigated. Various options are considered and the most effective combinations of soil handling for agrosteppes are identified.