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Irrigation and Melioration

Abstract

Effects of soil preparation technologies for planting of summer crop after winter wheat on soil crumbling were investigated in the experiment carried out in conditions of the old irrigated typical sierozem soils of the Tashkent region. Compared to soil plow to 28-30 cm depth excluding irrigation before the soil preparation, post-harvest irrigation followed by soil plow to 28-30 cm depth for planting of summer crop after winter wheat resulted in increase of soil fraction with >50 mm and <50 - >10 mm sizes for 4.0 and 6.8% respectively. To achieve early, quantitative and qualitative yields of summer crops the post-harvest irrigation after winter wheat followed by soil plow to 28-30 cm depth for planting of summer crops is recommended.

First Page

59

Last Page

60

References

1. Ислом Каримов - 2015 йил 29 декабрдаги ПҚ 2460-сонли қарори. Тошкент. Ўзбекистон, 2015. 2. Бахтин П.У., Долгов С.И. Исследование подвижности влаги и её доступности для растений. Москва: Наука, 1948. – 153 с. 3. Слесарева Л.Н., Рыжов С.Н. Роль структуры и сложения в повышении производительной способности оро шаемых сероземов. Ташкент: Фан, 1984. С. 160. 4. Тошболтоев М., Тўхтақўзиев А. Ёзги шудгор сифати //Ўзбекистон қишлоқ хўжалиги журнали, 2007, №7. Б. 7. 5. Tabatabai M.A. - Soil Sci. Soc. Americ. 1968. V. 32 (4): 588-594.

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