| 调亏灌溉对绿洲麦田氮磷生态化学计量比的影响 |
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| 引用本文： | 郭松年,张恒嘉.调亏灌溉对绿洲麦田氮磷生态化学计量比的影响[J].灌溉排水学报,2009(4). |
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| 作者姓名： | 郭松年 张恒嘉 |
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| 作者单位： | 甘肃农业大学工学院水利系; |
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| 基金项目： | 国家自然科学基金项目(40801044);;甘肃省高等学校研究生导师科研计划项目(0602-05);;临泽县玉米制种标准化示范及产业开发项目 |
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| 摘 要： | 小麦收获时调亏灌溉处理及对照0~20,20~40及0~40 cm土层N∶P比2008年均显著高于2007年,说明调亏灌溉能显著提高土壤N∶P比,改变土壤N、P平衡。方差分析表明,0~20 cm土层所有处理及对照间二个年度N∶P比均无显著差异,20~40 cm则差异显著,0~40 cm土层2007年所有处理及对照间N∶P比无显著差异,而2008年则差异显著。
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| 关 键 词： | N∶P生态化学计量比 氮磷平衡 调亏灌溉 绿洲麦田 |
Effect of Regulated Deficit Irrigation on N∶P Ratio of Ecological Stoichiometry in Oasis Wheat Field |
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| GUO Song-nian,ZHANG Heng-jia.Effect of Regulated Deficit Irrigation on N∶P Ratio of Ecological Stoichiometry in Oasis Wheat Field[J].Journal of Irrigation and Drainage,2009(4). |
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| Authors: | GUO Song-nian ZHANG Heng-jia |
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| Institution: | School of Engineering;Gansu Agricultural University;Lanzhou 730070;China |
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| Abstract: | In this paper the N∶P ratio of ecological stoichiometry and balance of soil total nitrogen and available phosphorus at harvest in oasis wheat field under regulated deficit irrigation were analyzed.The result indicated that the N∶P ratios in all the treatments and check in 0～20,20～40,and 0～40 cm soil layers at wheat harvest were significantly higher in 2008 than in 2007,revealing that regulated deficit irrigation could significantly improve the soil N∶P ratio and change the balance of nitrogen and phosphorus.The ANOVA suggested that no significant differences were found in N∶P ratios in all the treatments and check at harvest in both years in 0～20 cm soil layer,while significances were found in 20～40 cm layer.Additionally,no significant differences occurred in N∶P ratios at harvest in 2007 in 0～40 cm layer,but significances did occur in 2008. |
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| Keywords: | N:P ratio of ecological stoichiometry balance of nitrogen and phosphorus regulated deficit irrigation oasis wheat field |
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