植物营养与肥料学报2012，Vol.18Issue(4)：796-802,7.
土壤地力和长期施肥对潮土区小麦和玉米产量演变趋势的影响
Effect of soil fertility and long-term fertilizer application on the yields of wheat and maize in fluvo-aquic soil
摘要
Abstract
Long-term trends of crop yields and soil fertility have been used as a means to evaluate the sustainability of intensive agriculture, soil management and fertilizer application. Effect of soil fertility and long-term fertilizer application on the tendency of wheat and maize yield was analyzed based on 24-year data （1987-2010） collected from 32 sites, two treatments （no-fertilizer and normal fertilizer, which means NPK with straw） of long-term experiment of drab fluvo-aquic soil. The results showed that the average contribution rate of soil fertility to wheat and maize yield was 51.4% and 54. 0% , respectively. And the coefficient of variation （CV） of the contribution rate was 39.0% in wheat season, and 41.2% in maize season. The yields of wheat and maize in no-fertilizer field decreased slowly at a rate of 4. 1 kg/ha and 96.6 kg/ha per year, respectively. In normal fertilizer application field, the yields of wheat and maize increased at a rate of 61.5 kg/ha and 26.8 kg/ha per year, respectively . There was significant positive relationships between the amount of fertilizer and yield increase （yield in fertilized treatment-yield in unfertilized treatment）. Path analysis of the relationship between fertilizer, soil fertility and crop yield confirmed that N fertilizer amount had significant direct effect on wheat yield. Phosphate fertilizer also had an important effect on the wheat and maize yield. In conclusion, crop yield in drab fluvo-aquic soil decreased slowly under no fertilizer condition, increased slowly under fertilizer treatment.关键词
潮土/产量/土壤地力/长期施肥Key words
fluvo-aquic soil/yield/soil fertility/long-term fertilizer application分类
农业科技引用本文复制引用
马常宝,卢昌艾,任意,展晓莹,李桂花,张淑香..土壤地力和长期施肥对潮土区小麦和玉米产量演变趋势的影响[J].植物营养与肥料学报,2012,18(4):796-802,7.基金项目
公益性行业（农业）科研专项 （）
国家重点基础研究发展计划（973计划） （）
科技基础性工作专项（2007FY220400）资助. （）
