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马铃薯在生理成熟期收获产量最高。生理成熟的标志是:①叶色由绿逐渐变黄转枯,这时茎叶中养分基本停止向块茎输送;②块茎脐部与着生的匍匐茎容易脱离,不需用力拉即与匍匐茎分开;③块茎表皮韧性较大、皮层较厚、色泽正常。一般商品薯生产应考
Potato harvest in the physiological maturity of the highest yield. Physiological signs of maturity are: ① leaf color from green to yellow turn dry, then basically stop the nutrients in the stem and leaf to the tubers; ② tuberous and prone stolons easily detached without pull that is separated from the stolons; ③ larger tuberous epidermis, thick cortex, normal color. General commodity potato production should be test