EFFICIENCY OF APPLICATION OF MINERAL AND ORGANIC FERTILIZERS UNDER THE CULTURE OFCROP ROTATION IN THE IRRIGATION CONDITIONS OF FOOTHILL ZONE OF ALMATY REGION
Дата
2017Автор
Tukenova, Zulfiya
Ashimuly, K.
Umbetov, Amangeldy
Burybaev, Urikbek
Zorzhanov, Berik
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The paper presents the results from studies carried out in the farming conditions.
It has been found that with the application of rational norms of mineral and organic
fertilizers used for growing various crops (barley, rape, flax, soybean), soil fertility
could be stabilized and their effectiveness enhanced.
The content of mineral nitrogen under rape crops was at the level of the control variant.
Its content in the variant using liquid manure (biofertilizer) was somewhat lower than
that of in the rotted manure - 29.3; 28.9; 29.2, and 31.2 mg/kg, respectively, under
rotation crops. The least influence on the nitrogen content of the soil from among
organic fertilizers was made by the straw incorporation (6t/ha). The amount of mineral
nitrogen in the surface and subsurface soil decreased at the end of the growing season
for the studied crops.
Fertilizers in varying degrees affected the value of this indicator.
The introduction of calculated rates of mineral fertilizers (NPK) increased the content of
mobile phosphorus to 27.8-29.3 mg/kg, that is, by 6.6-6.8 mg/kg of soil compared with
the control variant.
Organic fertilizers also contributed to an increase in the mobile phosphorus content in
soil. Of these, the manure application had a greater impact (30t/ha). On average, over 3
years of direct action and 2 years of aftereffect, application of 30 t/ha of rotted manure
increased the content of mobile phosphorus under rotation crops by 3.5-4.8 mg/kg of
soil compared with the control variant.