| 不均衡施肥对紫色土稻麦产量的影响 |
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| 引用本文： | 李红陵,王定勇,石孝均. 不均衡施肥对紫色土稻麦产量的影响[J]. 西南大学学报(自然科学版), 2005, 27(4): 487-490 |
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| 作者姓名： | 李红陵 王定勇 石孝均 |
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| 作者单位： | [1]西南农业大学,基础科技学院,重庆400716 [2]西南农业大学,资源环境学院,重庆400716 |
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| 基金项目： | 国家科技部基础研究重大项目前期研究专项资助课题（2001CCB 00800） |
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| 摘 要： | 利用长期定位试验1991-2001年的部分监测结果,分析了养分非均衡化对稻麦产量和紫色土生产力可持续性的影响.结果表明,长期不均衡施肥,随着试验年份的延长,稻麦产量逐年降低,紫色土生产力的可持续性差.NPK化肥平衡施用以及NPK化肥与有机肥配合施用稻麦产量稳定,紫色土生产力的可持续性最强.
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| 关 键 词： | 长期定位实验 稻麦产量 生产力可持续性 紫色土 |
| 文章编号： | 1000-2642（2005）04-0487-04 |
| 收稿时间： | 2004-10-25 |
| 修稿时间： | 2004-10-25 |
EFFECTS OF NUTRIENT NON -EQUILIBRATION IN PURPLE SOIL ON CROP PRODUCTIVITY |
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| LI Hong - ling, WANG Ding - yong, SHI Xiao - jun. EFFECTS OF NUTRIENT NON -EQUILIBRATION IN PURPLE SOIL ON CROP PRODUCTIVITY[J]. Journal of southwest university (Natural science edition), 2005, 27(4): 487-490 |
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| Authors: | LI Hong - ling WANG Ding - yong SHI Xiao - jun |
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| Affiliation: | 1. College of Basic Science and Technology, Southwest Agricultural University, Chongqing,400716, China; 2. College of Resources and Environmental Sciences, Southwest Agricultural University, Chongqing, 400716, China |
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| Abstract: | Based on the data in a lone - term experiment at the fixed location, the effects of nutrient non - equilibration on the yield of rice and wheat and on the sustainability of productivity of the purple soil were investigated. The results showed that the persistence of the soil system was much lower with the use of non - equilibrated NPK fertilizers, especially non - equilibrated N or NK fertilizers, and the yield of rice and wheat decreased progressively. The highest sustainability of productivity was observed on the plots where equilibrium NPK chemical fertilizer and organic fertilizer were applied. |
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| Keywords: | long- term experiment soil fertility purple soil crop productivity |
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