| Study on period and appropriate amount of Rhizosphere complementary irrigation for potato in arid area |
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| DOI：10.7606/j.issn.1000-7601.2009.02.23 |
| Key Words: potato in arid area water use efficiency water supply efficiency |
| Author Name | Affiliation | | DU Jianmin | Institute of Desert Management Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan,Ningxia 750002,China | | WANG Feng | Institute of Desert Management Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan,Ningxia 750002,China | | ZUO Zhong | Institute of Desert Management Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan,Ningxia 750002,China | | GUO Yongzhong | Institute of Desert Management Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan,Ningxia 750002,China | | LIU Hua | Institute of Desert Management Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan,Ningxia 750002,China | | LI Haiyang | Tongxin Extension Service for Agricultural Techniques,Tongxin,Ningxia 751300,China |
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| Abstract: |
| Field trials are conducted to study water deficiency and compensation effect and the calculus regressive function of complementary irrigation and yield of potato in the arid area in central Ningxia.The results show that, as for the same irrigation amount, tuber initiation and bulking stages are the stages of complementary irrigation with the most yield increase and water supply efficiency;using different irrigation amount at the tuber initiation stage, both the yield and water supply efficiency are the largest under the irrigation amount of 3 or 4kg per time per plant.To carry out complementary irrigation with optimum amount at proper stages is an effective way for saving water, increasing yield and using complementary water efficiently. |
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