Method of using ottochloa nodosa to start shade-tolerant lawn

Abstract

The invention discloses a method of using ottochloa nodosa to start a shade-tolerant lawn, which includes: soaking seeds of ottochloa nodosa with gibberellin 5-8mg / L for 14-16 minutes, mixing humic acid 15.0g per kilogram of the seeds, sowing the seeds of ottochloa nodosa into soil of a shaded region with a shading rate 30-90% according to a seed density 10-15g / m2, controlling water content of the soil to be 30.0% during seed germination, carrying out cultivation management after seed germination, and obtaining the lawn of ottochloa nodosa growing in the soil of the shaded region. The seeds of ottochloa nodosa are treated with both the gibberellin and the humic acid, soil water is also controlled during seed germination, and accordingly, germination rate and survival rate of the seeds of ottochloa nodosa can be increased evidently, the germination rate can reach above 90%, up to 95%, the survival rate can reach above 80%, up to 85%. Otherwise, the germination rate of the seeds treatedwith no gibberellin or humic acid only reaches 15% and below. After the seeds of ottochloa nodosa germinate, the lawn can be quickly formed by conventionally managing cultivation.

Description

Technical field: [0001] The present invention relates to a kind of planting method of shade-tolerant lawn in the construction of urban green space, in particular to a kind of method of using shade-tolerant grass species Ottochloa nodosa (Kunth) Dandy var.micrantha (Balansa) Keng f. ) to establish a shade-tolerant lawn. Background technique: [0002] Lawn green space is a common form of green space in urban greening. It can absorb dust, purify air and fix CO 2 and release O 2 It plays an important role in increasing the landscape effect. At present, the construction of lawns and green spaces in cities and towns in my country is developing rapidly. However, there are not many shade-tolerant lawns, and there are fewer grass species used in green forests, resulting in the formation of weeds or bareness under many trees and shrubs, and more under the viaducts or in the shade of buildings. bare ground. The most important reason is that there are different degrees of shading i...

AI Technical Summary

Problems solved by technology

However, there are not many shade-tolerant lawns, and there are fewer grass species used in green forests, resulting in the formation of weeds or bareness under many trees and shrubs, and more under the viaducts or in the shade of buildings. Barely

The main reason is that there are different degrees of shading in these places, and it is difficult for ordinary sun-growing lawn grass species to survive, resulting in the generally poor quality of such lawn green spaces.