| 引用本文: | 严昌荣,梅旭荣,居 辉,赤 杰. 施肥对春谷子生长发育及水分利用效率的影响[J]. 中国生态农业学报(中英文), 2006, 14(1): 142-144 |
| YAN Chang-Rong,MEI Xu-Rong,JU Hui,CHI Jie. Effects of fertilization on the growth, development and water use efficiency of spring millet[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 142-144 |
| DOI： | DOI:10.3724/SP.J.1011.year_id].0142 |
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| 摘要: 试验研究不同施肥水平对半湿润偏旱区春谷子生长发育和水分利用效率的影响结果表明，春谷子株高、单位面积穗数和千粒重对施肥量的变化均有响应，一定施肥水平内随施肥量的增加，春谷子株高、单位面积穗数和千粒重均有所增加。施肥导致春谷子地2m土体土壤蓄水量下降，且随施肥量的增加而降幅增大；施肥使春谷子水分利用效率增加11.56%～16.24%。但当施肥量超过一定水平时，增加施肥量反而使春谷子产量和水分利用效率下降。 |
| 关键词: 春谷子 施肥 生长发育 水分利用效率 |
| 中图分类号: |
| 基金项目:国家科技部社会公益研究专项“北方旱区土壤水分测报评估系统研究”、国家高技术(863)发展计划项目(2002AA2Z4311，2002AA2Z4021)和“十五”国家科技攻关项目(2001BA509B09)资助 |
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| Effects of fertilization on the growth, development and water use efficiency of spring millet |
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YAN Chang-Rong, MEI Xu-Rong, JU Hui, CHI Jie
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Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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| Abstract: The effects of different fertilization levels on the growth, development and water use efficiency of spring millet were studied in semi-humid region. The results show that the height of individual, ears per hectare and 1000-grain weight of spring millet increase with the increase of fertilization amount within a certain range of fertilizer application. At the same time, fertilization induces the water amount in 2-meter soil layer decreasing, and its decreasing range is increasing with the fertilization amount increasing, and the water use efficiency of spring millet increases from 11.56% to 16.24%. When the amount of fertilization over a threshold value, the increasing of fertilizer results in the reduction of yield and water use efficiency of spring millet. |
| Keyword: Spring millet, Fertilization, Growth and development, Water use efficiency |
