| Effects of super absorbent on growth of potato and soil water utilization in the mountain area of Southern Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2009.03.06 |
| Key Words: PAM Wote super absorbent potato water use efficiency |
| Author Name | Affiliation | | ZHANG Yang | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources， Yangling， Shaanxi 712100, China；Craduate University Chinese Academy of Sciences, Beijing 100049,China | | ZHAO Shiwei | nstitute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources， Yangling， Shaanxi 712100, China | | LIANG Xiangfeng | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources， Yangling， Shaanxi 712100, China；Craduate University Chinese Academy of Sciences, Beijing 100049,China | | HUA Juan | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources， Yangling， Shaanxi 712100, China；Craduate University Chinese Academy of Sciences, Beijing 100049,China |
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| Abstract: |
| Study was conducted on the effects of PAM and Wote super absorbent on growth of potato and soil water utilization in the mountain area of Southern Ningxia.The results showed: PAM and Wote super absorbent could not only stimulate the growth of potato, but also increase yield.Potato biomass and yield in PAM 9.0 kg/2 (P3) , Wote 15 kg/2 (W1) , Wote 30 kg/2 (W2) and Wote 60 kg/2 (W3) were higher than it in CK (P<0.05) .Super absorbent had obvious effect on yield increase of potato.In seedling stage, tuber initiation stage and growth stage, water consumption of potato in all treatments had no difference from that in CK.In starch accumulation period water consumptions in CK were significantly higher than that in super absorbent treatment (P<0.05) .In super absorbent treatment water consumption of potato increased with the increase of biomass, and precipitation recharge to soil reduced with the increase of biomass.The water use efficiency (WUE) increased with the increase of application rate of PAM, but there was a reverse trend on Wote.With applied sequential cluster method, soil water content was supplied by rainfall in starch accumulation period, and the depth of recharge was 60 cm.Upon application of PAM and Wote, soil water storage were recovered to similar level in 0～140 cm.Soil water storage in Wote was 6.2 mm higher than that in PAM under 140 cm.Water productive efficiency and yield-increasing effect of PAM 9.0 kg/2 and Wote 60 kg/2 were the best. |
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