The resultsindicated that the dry weight and the activity of root,NRA and N/LA increasedcontinuously and were maintained at high levels from anthesis to 10 days afteranthesis.

• 结果表明,开花到开花后10天的根干重、根活力、旗叶 NRA 和旗叶叶氮量(N/LA)都继续上升,并维持较高水平;