| 摘要: |
| 1992年和1993年分别在临泽、张掖两地采用混料试验设计中的单形格子设计方法,定量地研究了小麦/玉米带田中等量氮肥在玉米基肥、拔节肥和抽雄肥中的最优分配比例。结果表明,小麦/玉米带田玉米施肥还必须考虑到小麦,将两种作物作为一个综合目标考虑;在带田玉米施纯氮量390 kg/hm2的条件下,覆膜玉米(张掖点)氮的分配应为基肥30kg/hm2,拔节肥315 kg/hm2,抽雄肥45 kg/hm2;不覆膜玉米(临泽点)氮的分配应相应为150,150和90 kg/hm2. |
| 关键词: 带状间作，施氮时期，单形格子设计 |
| DOI： |
| 分类号:S143.1 |
| 基金项目:甘肃省科委资助项目 |
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| Optimum Application Distribution of N Fertilizer in Several Maize Growth Stages in Wheat/Maize Strip Intercropping |
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Li Long 1 Jin Shaoling 1 Zhang Lihui 1 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2 Suo Dongrang 2,Li Long 1 Jin Shaoling 1 Zhang Lihui 1 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2 Suo Dongrang 2,Li Long 1 Jin Shaoling 1 Zhang Lihui 1 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2 Suo Dongrang 2
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| Abstract: |
| The wheat/maize strip intercropping field experiment with simplex-lattice design at two locations in Zhangye and Linze in 1992 and 1993 were conducted to determine the optimum application distribution of N fertilizer at different maize growth stages.The results showed that,with the consideratin of the responses of wheat,the optimum application distribution of N fertilizer at the rate of 390 kgN/hm2 was 30,315 and 45 kg at presowing,elongation,and tasse lingstages respectively for maize covered with plastic sheet at Zhangye,and at Linze it was 150,150 and 90 kgN/hm2 for intercropped maize without plastic sheet. |
| Key words: strip intercropping,N fertilizer application period,simplex-lattice design |
