中国油料作物学报2012，Vol.34Issue(3)：280-285,6.
江西红壤旱地花生测土施氮参数研究
Nitrogen application index based on dry red soil for peanut in Jiangxi Province
摘要
Abstract
Nitrogen application to dry red soil for peanut with two N levels (0 and 135kg/hm2) with Yueyou -256 as the tested variety was carried out in high, middle and low fertility of dry red soil. The results showed that with increased soil nitrogen supply, peanut yield, nitrogen requirement of producing per 100 kg pods and the soil nitrogen contribution rate also increased. The efficency of nitrogen fertilizer decreased with the increased existing nitrogen supply. The soil nitrogen supply of the tested high, middle and low fertility was 222.65kg/hm2,181.53 kg/ hm2 and 140.67kg/hm2 respectively. The corresponding soil nitrogen contribution rate was 84. 88% , 79.92% and 74.45% respectively and the apparent utilization efficency of nitrogen fertilizer was 29. 37% , 33. 70% and 35.51% respectively. Producing per 100kg pods required 6. 52kg, 6. 39kg and 6. 34kg nitrogen respectively on high, middle and low fertility of upland on NO level, while it required for6.60kg, 6.44kg and 6.37kg nitrogen respectively on N135 level. The correlation analysis suggested that the soil nitrogen supply, peanut yield and nitrogen requirement were significantly positively correlated to the soil organic matter, total nitrogen, available nitrogen and potassium, but not to the soil available phosphorus. Nitrogen use efficiency was negatively correlated to all the five indices of soil fertility, but the correlation was not significant. Finally regression equations of peanut yield, peanut nitrogen requirement, soil nitrogen supply and nitrogen use efficiency with soil fertility index were established, which would provide scientific guidance for peanut's nitrogen application based on soil testing on dry red soil.关键词
红壤旱地/花生/施氮参数Key words
Red soil upland/ Peanut/ Index of nitrogen application分类
农业科技引用本文复制引用
彭春瑞,陈先茂,林洪鑫..江西红壤旱地花生测土施氮参数研究[J].中国油料作物学报,2012,34(3):280-285,6.基金项目
“十一五”国家科技支撑计划项目(2009BADC6B04、2006BAD05B09) （2009BADC6B04、2006BAD05B09）
江西省优势科技创新团队项目(20113BCB24014) （20113BCB24014）
