期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2006

32

3

283-287

10.3321/j.issn:1007-1032.2006.03.015

国家自然科学基金（30270770）； 中加合作项目（HN-13）；

本校为第一机构

利用渗漏池模拟长江中游地区2种主要稻田土壤，研究了施用等P2O5量的有机肥（猪粪）和化肥对表面水总磷动态及其降水径流损失的影响．结果表明，施用化肥后，双季稻田表面水总磷均在施肥第1天就达到最高水平，然后迅速下降，而且晚稻的总磷浓度峰值显著高于早稻，有效磷含量高的河沙泥总磷峰值明显高于红黄泥．施用猪粪后，晚稻在第1天表面水总磷出现峰值，2种土壤分别较施化肥的提商了43．2％和66．9％，而且整个生长期总磷浓度均高于施用化肥的；早稻施肥后前3d表现较低的表面水总磷浓度，至7d后表面水总磷高于化肥处理的．双季稻种植制度下化肥和猪粪处理的磷素径流流失分别占施P量的0．86％...

Floodwater total phosphorus （TP） dynamics in rice-rice field and phosphorus loss by runoff after applying pig feces and chemical fertilizer of equal P2O5 content were studied by modelling two main soils in the middle reach of Yangtze River with lysimeter. The results showed that, floodwater TP concentrations in rice-rice field reached the highest level after applying fertilizer, then went down rapidly. And the TP peak from late-rice was higher than that from early-rice significantly; the TP peak from Aluvial loamy paddy soil with higher avail...