韭菜是根生蔬菜。养好韭菜根，提高韭菜产量，除与品种、肥水管理有密切关系，还与收割次数、收割时间和留茬高度有直接关系。一、韭菜每年收割次数以３～４次为宜，不宜过多。收割次数过多会影响养根，导致早衰，从而使产量和品质下降。二、收割时留茬高度要适当，一般从... Leek is the root of raw vegetables. Raise the leek root, raise leek production, in addition to varieties, fertilizer and water management are closely related, but also with the number of harvest, harvest time and stubble height is directly related. First, leek annual harvest times to 3 to 4 times is appropriate, not too much. Too many harvesters will affect the root, leading to premature aging, so that the yield and quality decline. Second, when harvesting stubble height to be appropriate, generally from ...