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2019, N 2 (36) |
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GENERAL AGRICULTURE, PLANT GROWING
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Gurbanova Z. |
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Change in phosphorus regime of grey-brown soils under an influence of irrigation |
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The results of two-year investigation on change of phosphorus regime in grey-brown soils of Ganja-Gazakh plain under an influence of irrigation are performed in the given work.
It is established that phosphorus possesses minor migration ability and doesn’t practically move from the place of bringing down on soil profile, transformation occurs essentially lesser than nitrogen.
The conclusions of the laboratorial analyses show that phosphorus content of the first and second groups gets increased since an old time irrigation, but a quantity of phosphorus acid of the third group, on the contrary is the most on the top and low stratums of virgin lands and the less – in the grey-brown 60 year irrigation. Organic phosphorus (the forth groups) is more in the virgin land and somewhat less in the irrigative soils, this is explained that higher productivity of the irrigative agrocenosis and high removal of cotton nutrients.
Consequently, fertility of both plowing and low stratums in the grey-brown soils rises under an influence of 60 – year irrigation and high agrotechnics.
Keywords: GREY-BROWN SOIL, ARID CONDITION, PHOSPHORUS REGIME, PHOSPHORUS, NITROGEN, IRRIGATION, REMOVAL NUTRIENTS |