How do you need to manage the leeks in the ground after harvesting?

In daily life do you know how to manage leeks in the ground after harvesting? Leeks in the spring after the weather has warmed up, it is necessary to remove the top of the mulch. In our place leek is perennial, in the day time will be some farmyard fertilizer covered in leek planting ground above, is to let leek can be safe over winter. And when spring arrives, the leeks will be sprouting, so the mulch will be removed from the planting ground. When the leeks grow to a height of 30CM, you can harvest the first crop of leeks. Need to pay attention to the first crop of leeks in the harvest, try to leave the stubble a little higher, which is conducive to the growth of the second crop of leeks to improve the total yield. Generally in the leek bulb up 6-7CM in the leaf sheath part of the leek to start cutting leeks. Almost 25 days after the leek harvest, you can harvest the second crop of leeks.