河北省唐山地区水稻产量的土壤养分限制因子研究  

Investigation on the Soil Nutrients of Rice in Tangshan in Hebei Province

作　　者：王素华[1] 冯自军[1] 张树明[1] 张作新[1] 

机构地区：[1]唐山市农业局土壤肥料站,河北唐山063000

出　　处：《土壤通报》2011年第1期103-105,共3页Chinese Journal of Soil Science

摘　　要：采用田间试验的方法研究了唐山地区水稻产量的土壤养分限制因子,分析了水稻产量构成因素对其产量的影响。田间试验结果显示,在唐山地区缺氮施肥处理对水稻产量影响较大,与全素处理相比,有效穗数为7个,减少9个,相对产量为40.2%,减产量达5700kghm-2,差异达到显著水平。这表明:氮主要通过减少水稻的有效穗数而影响水稻产量,是水稻产量的主要土壤养分限制因子。The effect of constituent elements of the yield on rice soil nutrients in Tangshan was studied.Field experiment was used in the investigation.The results showed that the yield of rice was decreased significantly by the decreasing nitrogen in Tangshan.Nitrogen treatment reduced panicle number of rice significantly（from 9 to 7）.In the meantime,the yield was reduced to 5700 kg hm-2 and the fractional yield was reduced to 40.2%.It was clear that nitrogen was the restrict nutrients of rice.

关 键 词：水稻 土壤养分 限制因子 

分 类 号：S158.5[农业科学—土壤学]