摘要
为明确不同施氮方式对玉米各器官养分含量的影响规律,试验设计3个处理,即无氮肥,基肥,基肥+追肥处理,3个处理的P2O5用量为65 kg·hm-2,K2O用量为45 kg·hm-2。试验结果表明:基肥+追肥处理的玉米根系、茎、叶、玉米芯、玉米粒氮含量显著高于对照,玉米粒含氮量与对照相比提高了22.73%;磷含量在喇叭口期和快速生长期所有处理根茎叶内含量相同,收获期不同处理间无显著差异;在收获期基肥+追肥处理的茎、玉米芯、玉米粒中的钾含量显著高于对照,其他部位与对照之间无显著差异。综合分析认为,玉米氮肥施用中采取基肥+追肥的施肥方式对提高玉米各器官养分含量效果优于单纯采用基肥的施用方式。
Three treatments,non-nitrogenous,basic fertilizer and basic fertilizer＋additional fertilizer were designed to study the effects of different nitrogen application methods on nutrition content of corn organs,and all these three treaments used 65 kg·hm-2 P2O5, 45 kg·hm-2 K2O. The results showed that corn roots,stems,leaves,corn cobs,corn kernels nitrogen content of basic fertilizer＋additional fertilizer treatment were significantly higher than the control,and corn kernels nitrogen content increased 22.73% than the control;phosphorus content of different treatment was the same content in bell stage and fast growing,and had no significant difference in harvest;stems,corn cobs,corn kernels potassium content of basic fertilizer＋additional fertilizer treatment were significantly higher than the control in harvest,and other parts of corn had no significant difference than the control.Comprehensive analysis showed that nutrition content of corn organs under the basic fertilizer＋additional fertilizer conditions was better than under basic fertilizer conditions.
出处
《黑龙江八一农垦大学学报》
2014年第1期9-13,共5页
journal of heilongjiang bayi agricultural university
关键词
氮肥
玉米
养分含量
nitrogen fertilizer
corn
nutrient content
