%0 Journal Article %A HOU Xianqing %A LI Rong %A HE Wenshou %A MA Kun %A DAI Xiaohua %A ZHAO Jiwei %T Comparative Effects of Two Super Absorbent on Soil Physical Properties of Dryland and Potato Yield %D 2015 %R 10.11869/j.issn.100-8551.2015.12.2410 %J Journal of Nuclear Agricultural Sciences %P 2410-2417 %V 29 %N 12 %X In order to enhance production of potato as pillar industry in arid and semi-arid areas of Ningxia, and find a new way to solve drought and water shortage, especially at seedling stage of potato growth process, a field study was conducted to determine effects of super absorbent dosages on soil physical properties of dryland and potato yield by using two dosages of super absorbents (Wote and Microbe). The results showed that, the soil bulk density of the 0 to 30 cm depth was significantly decreased by 9.0% compared with no aquasorbent applying (CK) under using Wote super absorbent for 90 kg·hm-2, but it greatly improved total soil porosity of the 30 to 60 cm depth by 8.9% with using Microbe super absorbent for 90 kg·hm-2. The Microbe super absorbent treatments produced higher amounts of>0.25-mm macroaggregates compared with CK at the 0 to 30 cm depth. In contrast, the Wote super absorbent treatments produced higher amounts of>0.25-mm microaggregates at the 30 to 60 cm depth. The super absorbent treatments obviously increased the amount of soil water stored at the 0 to 100 cm depth during the critical growing stage of potato, and the Microbe super absorbent treatments improved soil water status best at early stage of potato. However, the Wote super absorbent treatments could significantly improve soil water status at expansion-maturity stage. Higher yield improvements were achieved with using two dosages of super absorbents compared with CK. The yield of potato was increased by 41.1% with using Wote super absorbent for 60 to 90 kg·hm-2, and the commodity rate improvements was 21.1% with using Wote super absorbent 60 to 90 kg·hm-2, when compared with no aquasorbent applying respectively. This study could provide some reference for rational application of super absorbent in potato production in dry farming region of Ningxia. %U https://www.hnxb.org.cn/EN/10.11869/j.issn.100-8551.2015.12.2410