摘要
为推广水稻高产栽培新技术提供理论依据,以超级稻品种金优785为试验材料,分析不同施氮总量及氮肥运筹方式(不同时期施用比例)水稻的生育期、叶面积、茎秆粗和产量变化。结果表明:以精确定量的施氮量(16kg/667m^2)与氮肥运筹基蘖肥∶穗肥=5∶5组合处理的单产最高,达815.6kg/667m^2,与其他处理的差异达极显著水平,植株各项性状表现突出。氮肥后移施用能取得较理想的产量效果。
The effect of different nitrogen application amount and pattern （application proportion at different growth stage） on rice yield was studied by determining growth period, leaf area, stem diameter and yield of Jinyou 785, a new super rice variety, to provide the theoretical basis for popularization of rice high-yield cultivation technique. Results： The per unit area yield of Jinyou 785 reaches the highest （815.6 kg/667m2 ） under 16 kg/667m2 nitrogen application amount （8 kg/667m2 for base and tillering fertilizer and 8 kg/667m2 for spike fertilizer） and is higher than other treatments significantly. The agronomic traits of Jinyou785 under 16 kg/667mz nitrogen application amount （8 kg/667m2 for base and tillering fertilizer and 8 kg/667m2 for spike fertilizer） is better than other treatments. Postponing nitrogen application pattern is beneficial to improve rice yield.
出处
《贵州农业科学》
CAS
2016年第7期22-25,共4页
Guizhou Agricultural Sciences
关键词
水稻
精确定量
氮肥
产量
rice
precise quantification
nitrogen
yield
