Effeet of subsoiling on crop yield in semi-arid area of west Liaoning and its mechanism

Abstract

Abstract: The study shows that subsoiling can break up tillage pan,decrease penetration resistance and soil bulk density,increase subsoil porosity,and results in a deeper water infiltration depth,which is up to 80 cm.After subsoiling,the root length of soybean is increased by 3.6～4.0 cm,its yield and water use efficiency are respectively increased by 27.7～34.5% and 16.1%,and in drought year,maize yield is increased by 7.9%.

Key words: Subsoiling, Semi-arid area, Water use efficiency, Soybean, Maize, Medicago sativa, seed germination, physiological characteristics, osmotic potential

Wang Shixin, Cui Jianbo, Zhuang Jiping. Effeet of subsoiling on crop yield in semi-arid area of west Liaoning and its mechanism[J]. Chinese Journal of Applied Ecology, 1996, 7(3): 267-272.

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Effeet of subsoiling on crop yield in semi-arid area of west Liaoning and its mechanism

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