| 引用本文： |
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李发永，张营山，王 龙，王兴鹏.枣棉间作模式下作物不同水肥界面交互影响初探[J].大中文模板3,2014,(2):99-106. [点击复制]
- LI Fa-yong, ZHANG Ying-shan, WANG Long, WANG Xing-peng.Study on interaction between water and fertilizer under jujube-cotton intercropping[J].大中文模板3,2014,(2):99-106. [点击复制]
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| 摘要: |
| 为探讨枣棉间作模式下作物全生育期水肥的交互影响，在枣棉不同生育期，分析了不同土壤界面水分和养分的空间分布差异性。结果表明:枣棉在不同生育时期对水分的需求不同，在7月至8月，作物对水需求随着生长进程逐渐增大，红枣耗水量较大，红枣在新梢增长期、花期、以及幼果期易与棉花产生水分竞争，土壤20～40 cm深度为最易产生竞争的区域。而在8月下半月至9月上半月枣树对水分的需求低于棉花对水分的需求，二者水分竞争趋于缓和；枣棉对速效磷的竞争不如水分那么剧烈，根据二者的生育期特点可将这种竞争降到最低；速效钾和钠离子的分布都与滴灌位置有关，离滴灌位置越远二者含量越高。红枣和棉花在整个生育期对土壤速效钾的利用存在着竞争，前期竞争较缓和，红枣进入幼果期及棉花铃期和桃期以后，这种竞争更加剧烈。两者在8月份0＜H≤60cm土层对钾的吸收竞争最激烈。 |
| 关键词: 滴灌 枣棉间作 水肥 界面 |
| DOI： |
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| 基金项目:国家自然基金项目(51169024)；水利部公益性行业专项(201101050) |
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| Study on interaction between water and fertilizer under jujube-cotton intercropping |
| LI Fa-yong, ZHANG Ying-shan, WANG Long, WANG Xing-peng |
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| Abstract: |
| To explore the interaction between water and fertilizer in different growth stages of crops for jujube-cotton intercropping, we explored the spatial distribution soil moisture and nutrients in different depth. The result showed that jujube and cotton at different growth stages had differe
nt requirementsfor water. From July to August, water requirement increased with the growth process. Jujube needed more water than cotton. And the competition for water between the two crops became more severe at shoot growth, flowering, and the young fruit periods, being more obviously for 20～40 cm of soil depth. From late August to early September, jujube required less water than cotton did and the competition for water and available phosphorus weakened. There was competition for utilization of soil available K between dates and cotton during the whole growing period. The competition was more intense during he young fruit and cotton peach boll stages. |
| Key words: drip irrigation jujube-cotton intercropping water and fertilizer interaction |
