摘要
在其它肥料和管理处理相同下,采用田间试验研究不同化学氮肥用量对长沙市区生菜产量和经济效益的影响。结果表明:该地区生菜最高理论产量3175kg/667m2,相应施氮量7.24kg/667m2;5个处理中生菜产量和净收入均以施氮量4kg/667m2处理最高,施氮量16kg/667m2处理最低。
Field experiment was carried out to study the effect of nitrogen fertilizer rates on the yield and economic benefits of lettuce in Changsha area with the same treated conditions of other fertilizer and management level. The results showed that： the highest calculated yield of lettuce in the region was 3 175 kg/667 m^2 by using nitrogen fertilizer of 7.24 kg/667 m^2 ; The yield and net income of lettuce in N4 were the highest compared with other 4 treatments, and those of N16 were the lowest.
出处
《湖南农业科学》
2009年第3期49-50,共2页
Hunan Agricultural Sciences
基金
湖南省专项资金资助
关键词
氮肥施用量
生菜
产量
经济效益
nitrogen fertilizer rates
lettuce
yield
economie benefits
