伤流量是植物根系活力的重要指标,在測定方法中采用称重法較为簡便准确。一般測定时都用指形管,中間放脱脂棉套在切断植株的伤口。但这种做法有一定的缺点:首先指形管和植株莖杆的粗度往往不易一致,在测定过程或多或少有水分蒸发,誤差无法計算。 Injury is an important indicator of plant root activity, the determination of the method used in weighing more simple and accurate. The general determination of the use of finger tubes, the middle of the cotton wool off the plant cut off the wound. However, this approach has some disadvantages: firstly, the thickness of the finger pipe and the stem of the plant are often not uniform, and the measurement process more or less evaporates the water and the error can not be calculated.