Root characteristics of asparagus: asparagus stems are divided into underground stems and aboveground stems, each with different functions. Asparagus is a fibrous root system, which consists of fleshy storage roots and fibrous absorption roots.
The fleshy storage roots occur in underground rhizomes, and most of them are distributed in the soil layer 30 cm above the surface, which has a long life. As long as the growing point is not destroyed, it can continue to extend forward every year, generally reaching about 2 meters, which plays a role in fixing plants and absorbing nutrients from stored stems and leaves.
Development sequence: primary root-fleshy root-absorbing root;
Distribution: Asparagus is a deeply rooted plant. Most of the root groups are distributed in the range of 1 ~ 2m, with the longest being 3m, and the lateral distribution radius of roots is 90 ~ 120cm, with the largest being 1.5 ~ 1~2m, with strong absorption capacity.
Hairy absorption roots occur on fleshy storage roots. Hair-like absorption roots have a short life span and will shrink at any time under unfavorable conditions such as high temperature, drought, soil salinization or acid-base discomfort, too much water and insufficient air. Asparagus root group is developed, the level can reach about 3 meters, and the burial can reach about 2 meters. But most of the root groups are distributed in the plough layer within 30 cm.