| 旱地长期施肥对土地生产力和肥力的影响 |
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| 引用本文： | 兰晓泉 郭贤仕. 旱地长期施肥对土地生产力和肥力的影响[J]. 计算机科学, 2001, 0(3): 102-105 |
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| 作者姓名： | 兰晓泉 郭贤仕 |
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| 作者单位： | 甘肃省农科院旱农所 甘肃兰州730070(兰晓泉),甘肃省农科院旱农所 甘肃兰州730070(郭贤仕) |
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| 基金项目： | "九五”国家重点科技项目(96-004-05-11) |
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| 摘 要： | 本文总结了半干旱黑垆土区 1 990～ 1 999年长期定位施肥的试验结果 .有机肥在提高旱地生产力和土壤肥力方面起着主导作用 .在施入等量氮磷养分下 ,平均有机肥增产 4 6 6% ,有机肥 化肥增产4 4 8% ,化肥增产 2 2 4 % .施肥后效和土壤肥力均随施肥量的增加而提高 .后效的增产率在 3年内的约占原施肥处理的 1 / 4～ 1 / 3.
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| 关 键 词： | 肥料 作物产量 土壤养分 增产效益 |
Effect of long-term fertillization on land productivity and soil fertility in dryland |
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| LAN Xiao-quan,GUO Xian-shi. Effect of long-term fertillization on land productivity and soil fertility in dryland[J]. Computer Science, 2001, 0(3): 102-105 |
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| Authors: | LAN Xiao-quan GUO Xian-shi |
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| Abstract: | The experimental results of long term fixed fertilization from 1990 to 1999 in dark loessal soil in semiarid were summarized. The organic manure plays an important role for improving dryland productivity and soil fertility.Under the condition of fertiliz |
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| Keywords: | Fertilizer Crop yield Soil nutrient Long term experiment |
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