植物营养与肥料学报2013，Vol.19Issue(3)：566-576,11.DOI:10.11674/zwyf.2013.0306
施肥和密度对张杂谷5号光合特性及产量的影响
Effects of fertilization and density on photosynthetic characteristics and yield of hybrid foxtail millet
摘要
Abstract
Foxtail millet (Setaria italica L.) is of high nutritious value,which has been mostly used for foods in Africa,Asia and Central and South America.To investigate the effects of fertilization and density on photosynthetic characteristics and yield of millet,Zhangzagu 5,an experiment based on quadratic general rotary unitized design with 3 replications was conducted.The results show that the yield is significantly positively correlated with leaf area index,net photosynthetic rate and chlorophyll content (SPAD).The levels of nitrogen,phosphate and potassium and the row spacing all have significant effects on the net photosynthetic rate and yield of millet,and the net photosynthetic rate and yield are mainly affected by the nitrogen level and row spacing,while the influence of phosphate and potassium are relatively small.The row spacing,plant spacing and nitrogen level have great effects on leaf area index,and leaf area index is increased at first and then decreased with the increase of N level and decreases of row spacing or plant spacing.The effects of nitrogen and potassium levels on chlorophyll contents are obvious,and the chlorophyll contents have a trend from rising to declining with nitrogen or phosphate increasing.The interactions between the nitrogen level and potassium level and plant spacing,and the interaction between the potassium level and plant spacing show significant effects on yield,and the interactions between the nitrogen level and potassium level and plant spacing show great effects on net photosynthetic rate.The interaction effects of other factors on photosynthetic characteristics and yield are not obvious.Multivariate quadratic regression analysis indicates that the regression relationship between the levels of nitrogen,phosphate and potassium,row spacing,plant spacing and the yield of Zhangzagu 5,can be used for production forecasts.The recommended cultivation conditions for Zhangzagu 5 are 178-197 kg/ha for nitrogen level,88-101 kg/ha for P2O5,54-67 kg/ha for K2O,22-24 cm for row spacing,and 12-13cm for plant spacing.These results suggest that nitrogen,phosphate and potassium,row spacing,plant spacing and their interactions have certain effects on the leaf area index,net photosynthetic rate and chlorophyll content (SPAD) and yield of Zhangzagu 5.The research lays a theoretical foundation for reaching high and stable millet yield and spreading hybrid millet to a large area.关键词
杂交谷/二次通用旋转组合设计/施肥/密度/产量/光合特性Key words
hybrid millet/ quadratic general rotary unitized design/ fertilizer/ density/ yield/photosynthetic characteristic分类
农业科技引用本文复制引用
杨艳君,王宏富,郭平毅,王玉国,原向阳,邢国芳,邵东红,祁祥,解丽丽..施肥和密度对张杂谷5号光合特性及产量的影响[J].植物营养与肥料学报,2013,19(3):566-576,11.基金项目
山西省农业综合开发项目(201150-1/2) （201150-1/2）
山西省谷子产业体系项目2011 （）
山西省科技攻关项目(20120311004-4) （20120311004-4）
博士后启动基金(112117)资助. （112117）
