本工作是测定油菜叶片中硝酸还原酶活性,结合施肥、籽粒产量进行分析,试图从生理生化上为合理施肥提供一些参考。 实验材料是中国农科院油料作物研究所盆栽的试验油菜(甘油5号和低芥酸品系3号)。N、P、K单施和混施的肥效试验土壤为沉积土,每盆土重5公斤,单施施肥量以每公斤土N—0.2克、P_2O_5—0.2克、K_20—0.16克为标准计算、若NPK配合施用,则是单独施用量 This work is to determine nitrate reductase activity in rape leaves, combined with fertilization, grain yield analysis, trying to provide some reference for physiological fertilization for rational fertilization. The experimental materials were potted rapeseed (Glycerin No.5 and Low Erucic Line No.3) from Institute of Oil Crops, Chinese Academy of Agricultural Sciences. N, P, K fertilizer and fertilizer alone soil test for the sediment soil, each basin weighs 5 kg, the amount of fertilizer alone to N-0.2 grams per kg of soil, P_2O_5-0.2 g, K_20-0.16 g as the standard If NPK is administered in combination, it is the amount administered alone