| Balanced fertilization on dry land in the mountainous area of south Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2005.03.16 |
| Key Words: dry land balanced fertilization optimum fertilization combination |
| Author Name | Affiliation | | ZHAO Quan-ren | Ningxia Department of Science and Technology,Yinchuan 750001,China | | CHEN Bing-yan | Xiji Extension Service for Agricultural Techniques,Xiji,Ningxia 756200,China | | BI Jiang-tao | Ningxia Extension Service for Agricultural Techniques,Yinchuan 750001,China | | LIANG Pu | Xiji Extension Service for Agricultural Techniques,Xiji,Ningxia 756200,China | | WANG Xiao-xia | Xiji Extension Service for Agricultural Techniques,Xiji,Ningxia 756200,China | | LI Ruo-tai | Xiji Extension Service for Agricultural Techniques,Xiji,Ningxia 756200,China |
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| Abstract: |
| By using the optimum regression design of three factors and four levels, the experiment of balanced fertilization was carried out on the dry land in Xiji county of south Ningxia for the main crops during 20012003. The results showed that, in the semi-arid areas with 350400 mm precipitation, the optimum fertilization combination for wheat was N 120 kg/hm2, P2>O5 90 kg/hm2, K2O 30 kg/hm2; for pea was N45 kg/hm2, P2>O5 180 kg/hm2, K2O 40 kg/hm2; for film-mulched corn was N270 kg/hm2, P2>O5 120 kg/hm2, K2O 60 kg/hm2; for potato was N225 kg/hm2, P2>O5 72 kg/hm2, K2O 80 kg/hm2. |
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