Runoff loading of nitrogen and phosphorus with rainfall intensity from a paddy field
Runoff loading of nitrogen and phosphorus with rainfall intensity from a paddy field
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稻田氮、磷径流负荷随降雨强度的变化
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Chang
中科院分区：
文献类型：
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作者：
Jaeyoung Cho;K. Han;Chang
韩国国土面积小，耕地仅占国土总面积的24%，因此提高农业生产率迫在眉睫。在这一过程中，作为农业面源主要污染因子的化肥施用量逐年增加。研究了不同降雨强度（100 mm以上、80- 100 mm、50- 80 mm和30- 50 mm）对氮磷径流负荷的影响。相同雨强条件下，不同雨强对氮磷径流负荷的影响存在差异。我们认为这些结果受降雨强度以及水文条件，土壤管理，是否施肥，种植，稻草和翻耕的影响
Since the national land area is small and the fanning land occupies only 24% of total land area in Korea, the promotion of agricultural productivity is urgent. In this process, the application rate of chemical fertilizer, which is the major pollution factor at agricultural non-point sources, has been increasing in every year. The present study examined difference of runoff loading of nitrogen and phosphorus by rainfall intensity(above 100mm, 80-100mm, 50-80mm and 30-50mm). Runoff loading of nitrogen and phosphorus by rainfall intensity has differences under similar rainfall intensity. We are considering that these results were affected by rainfall intensity as well as hydrological condition, soil management, whether or not fertilizer application, cropping, rice straw and plowing