Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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Registration certificate: PI number 77-12831 on May 31, 2002
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ISSN 1997 - 4868 (Print)

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 11 (103) 2012

Агрономия

Ерёмин Д.И. доктор биологических наук, профессор Государственный аграрный университет Северного Зауралья

Моисеев А.Н. соискатель Тюменская государственная сельскохозяйственная академия

УДК:633.11

ASSESSMENT OF CROP ROTATION ON CULTURES MOISTURE SUPPLY IN THE FOREST-STEPPE ZONE OF TRANSURAL

Scientifically based alternation of agricultural crops in aggregate with the tillage has a positive effect on the reproduction of arable soils fertility. Water is one of the factors limiting the yield of crops in the forest steppe zone of Transural. Crop rotation allows reduce the expense of productive moisture and thus increase the productivity of arable land. Studies have shown that spring wheat spends on the formation of 1 ton fodder units to 82.3 mm of productive moisture. Annual and perennial grasses demand up to 100-163 mm / t fodder units. Under the conditions of insufficient moisture sowing of annual grasses and winter rye for green fodder leads to increase of water to create 1 ton fodder units - water use ratio is 127.4 and 153.6 mm. Increased water consumption of this crops is explained by increasing physical evaporation of water under the action of mechanical treatments and high transpiration due to deterioration in the food regime. For the forest-steppe zone of Transural grain-fallow and grain-grass crop rotations were the most effective on water use, where the water use rate was 127.4 and 153.6 mm / t fodder units respectively. It was established that perennial grasses (cereal-legume mixture) after 3 years of use reduce their productivity and inefficient spend soil and atmospheric moisture.

Keywords:

forest-steppe zone of Transural, leached chernozem, crop rotation, deposit of productive moisture, annual and perennial grasses, spring wheat, water use ratio


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