Why can leeks grow back after being cut?

Leek is a plant that has been growing for many years. It has an inconspicuous bulb in the ground, and many nutrients are stored in the bulb. It is this kind of nutrition that makes leeks grow again soon after being cut. Moreover, the leaves of leek grow quickly. When leaves are cut off, new leaves will grow back quickly. Generally speaking, from spring to autumn, leeks can be cut once every 40 days, and if there is enough fertilizer, they can be harvested 5 to 6 times a year. ① Leek has a powerful regeneration function. Generally speaking, new fresh leek leaves often grow after harvest, but the benefit of harvest is that the soil fertility is sufficient. However, if the harvest is too frequent, it will easily reduce the soil fertility, and the soil does not have enough nutrients for the growth of leeks, which will naturally lead to the slow growth of leeks, the thinning and yellowing of leaves, and the yellowing of some tips. * In addition to the slow growth of leek caused by insufficient fertility, the root system of leek began to age after being planted for too long, or the root system of leek was eaten by ground maggots, which led to the reduction of soil nutrients absorbed by the root system of leek. In addition, too many times of leek harvesting, the source of soil nutrients absorbed by leek roots can not meet the growth of leek, which will lead to the slow growth of leek.

(1) If the root system of Chinese chives is affected by ground maggots, which leads to the slow growth of Chinese chives, use pesticides to irrigate the roots and kill Chinese chives. Before harvesting, the recovered leeks should be stopped for a period of time. The leaves of leek will form photosynthetic products under the irradiation of sunlight. Sufficient photosynthetic products are beneficial to the growth of leek root system. Stopping harvesting can effectively restore the nutrition of leeks and roots, and the newly grown leeks can resume growth. In order to prevent leeks from growing slowly due to too frequent harvesting, it is best to stop harvesting leeks in summer, because the summer temperature and humidity are high, and the appropriate temperature and humidity are especially suitable for the growth of leeks. Leek will grow quickly and consume a lot of nutrition. There, harvesting can be stopped in summer.

② Due to the high temperature and humidity in summer, suitable temperature and humidity are especially suitable for the growth of leeks, which will grow quickly and consume more nutrients. Therefore, properly stopping harvesting in summer can reduce the root consumption of leeks, so that the long-growing leeks still grow rapidly in early autumn and taste good.