What happened to the old daylily? What is the reason for the withering of day lily?

One-time total renewal method: immediately dig out all the old plants of the day lily, leave the original place, deeply cultivate the day lily land by 60-80 cm, fertilize the soles of the feet while deeply cultivating, spray 30-35 kg lime per mu for disinfection and sterilization, and then deeply cultivate the soil. It is best to sell in early autumn. Moreover, it is best to dig out the soil of the day lily and break it, and then break the partition after 7~ 10 days in the sun, and plant new seeds before the autumn seedlings germinate. This method can directly replace new varieties of day lily, but the annual renewal area should not be too large. The area is too large, and the annual output changes greatly.

Before the autumn buds of day lily germinate, dig out the "heavy soil" together, and dig one-third or one-half of the old stumps to the roots to let the new seedlings grow. After 3-4 years, when the newly grown seedlings have the ability to live independently, they will dig out all the Huang Lin left on the other side of the stump. In this way, the growing seedlings have the same characteristics as the original varieties. For example, if the original variety has eliminated the bad variety, it should not be updated in this way. For the day lily plants that grow too fast and have too high density, the liver is dug to keep fresh. In the first year, dig a line between the old residual stems and plant new seeds. After two or three years, dig out all the remaining residual stems or dig them out one by one.

Day lily planting mainly adopts busy planting mode, which maintains the good quality of day lily and is beneficial to early production, and the survival rate can reach 90%. Many people think that day lilies don't need to be planted once, but this view is wrong. Day lily is a process of rapid growth of plants in the first three years after planting. Generally, a tree is planted in the first year, and the number of day lilies has decreased from 10 to 15 in the past three years. In the later growth process, its ability to divide evil gradually weakened. In order to improve the yield of day lily, growers often spend minutes on day lily for five years in a row. The way of drawing lots is often to directly dig out two-thirds of the day lily old Chu. This has two advantages. First of all, newly dug forests can be planted as new seeds. Second, the other plants showed good growth ability again, which contributed to high and stable yield.

Before the autumn buds of day lily sprout, dig out the "heavy soil" together, and dig out one-third or one-half of the old stump by roots to let the new seedlings grow. After 3-4 years, when the newly grown seedlings have the ability to live independently, they will dig out all the Huang Lin left on the other side of the stump. In this way, the growing seedlings have the same characteristics as the original varieties. For example, if the original variety has eliminated the bad variety, it should not be updated in this way.