Effects of KNO3 spray on nitrate reductase activity (NRA) and nitrogen accumulation were studied in Pyrus pyrifolia cv. Niitaka seedlings grown in pots.

• 在盆栽条件下,研究了喷施KNO3对新高梨实生苗硝酸还原酶活性(NRA)和氮素积累的影响。