| Effect of water deficit during seedling stage on qrowth and water use of maize on the condition of different N and P nut rition |
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| DOI：10.7606/j.issn.1000-7601.2011.06.01 |
| Key Words: maize seedling stage nitrogen phosphor dry matter accumulation water use efficiency |
| Author Name | Affiliation | | YUE Wenjun | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education, Northavest A & F University， Yangling, Shaanxci 712100, China | | ZHANG Fucang | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education, Northavest A & F University， Yangling, Shaanxci 712100, China | | LI Zhijun | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education, Northavest A & F University， Yangling, Shaanxci 712100, China | | SUO Yansong | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education, Northavest A & F University， Yangling, Shaanxci 712100, China |
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| Abstract: |
| An experiment in pots was carried out to study the effect of water deficit during the seedling stage on
growth，dry matter accumulation and water use efficiency of maize named Xingmin -338 on the condition of different N and P by providing three nitrogen phosphor levels and four water deficit treatments. The results showed that in the same applicationof N and P nutrition， slight water deficit during the sedling stage had marked compensation effect on dry matter accumulation and improved water use efficiency of maize. Compared with CK，dry matter accumulation of maize was increased by 21.84%，22.22% and 19.50% respectively 21days after rewatering and with the three treatments of N0P0，NP1 and N2P2. Medium water deficit and serious water deficit during the seedling stage reduced dry matter accu-mulation. In the same water deficit， low N and P fertilizer application was beneficial for maize growth and development. Therefore，the pilot study found that slight water deficit plus low N and P levels during the seedling stage was an ideal water and fertilizer coupling. |
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