ЭлБиб

Аграрная наука Евро-Северо-Востока, № 2 (57), 2017 г.

Phosphatic condition of the light gray forest soil at introduction of the increasing doses

of afteralcohol grains

Korchenkina N.А.

PhD in biology, deputy director,

Dabakhova E.V.

DSc in agriculture, provost,

Titova V.I.

DSc in agriculture, head of the department,

Nizhny Novgorod Research Institute of Agriculture,

Selektsiya, Kstovsky district, Nizhegorodskaya oblast, Russia

Federal State Budgetary Educational Institution of Higher Education «Nighny Novgorod State

Agricultural Academy»

For the purpose of an assessment of transformation of a phosphatic condition of the light gray forest soil under ac-

tion of afteralcohol grains in the laboratory of the department of agrochemistry and agroecology of the Nizhny Novgorod

SAA carried out an experiment by laying the model experience.

As the studied factor are taken increasing doses of

afteralcohol grains which in production conditions conventionally correspond to doses of 50, 100, 150 and 200 m

/ha. The

fractional composition of phosphates in the soil was determined right after laying of experience, and then every 2 week for

3 months.

As the object of research used waste produced in the technological cycle of "Distillery" Chugunovsky"

Vorotynsky district of Nizhny Novgorod, containing in the structure 3,7% of solid, 0,44% of nitrogen, 0,06% of phospho-

rus and 0,12% of potassium. During researches it is established that with increase in a dose of afteralcohol grains making

the absolute content and a share of organic phosphorus in relation to gross increases. The total of mineral phosphates on

the fertilized options is higher, than on control, however their individual share in the general reserves of phosphorus at

increase in a dose of afteralcohol grains decreases by 3%. The sum of phosphates of all groups at introduction of the in-

creasing doses afteralcohol grains an comparison with control option increases - by the end of experience their contents on

option with the maximum dose of afteralcohol grains in comparison with control option increases from 35 up to 42%. At

the same time it is noted that increase of content of phosphates is reached due to increase in amount of less valuable phos-

phates of iron and aluminum in the agronomical relation. The unidirectional tendencies in dynamics of a phosphatic condi-

tion of the soil during the studied period aren't revealed. Use of high doses of afteralcohol grains promotes essential

(to 50%) to increase of fosfatazny activity of the soil.

Key words:

model experience, afteralcohol grains, light gray forest soil, fractional composition of phosphates,

fosfatazny activity of the soil

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