Method for accelerating rejuvenation and potency growth of Chinese wildrye

Abstract

The invention discloses a method to promote the rejuvenation and plant growth of leymus chinensis, which is characterized in that, during the turning green period or before the rains on the growth declination period of leymus chinensis, root cutting operation is performed to leymus chinensis grass lawn. The method has the advantages that, permeability is improved by cutting the roots, and the high yield of leymus chinensis is maintained; in addition, during the root cutting operation, the vegetative soil structure of the leymus chinensis is loosen and improved, and the soil hardening factor restricting the vegetative propagation of leymus chinensis is eliminated; therefore the permeability of the soil is improved; good environment is created for grassland vegetation growth, and the productivity of grasslands is improved; the method is suitable for the ecological restoration and management of naturally degraded leymus chinensis grass lawn; the service life of artificial leymus chinensis grass lawn is prolonged, and leymus chinensis with good quality is provided.

Description

technical field [0001] The invention relates to the field of grassland ecological management and restoration, in particular to a mechanized rejuvenation and growth-promoting method for improving compacted and degraded Leymus chinensis grassland. Background technique [0002] The Leymus chinensis grassland formed with Leymus chinensis as the construction species is a unique grassland type in the eastern part of the Eurasian steppe area. It is only distributed in the Transbaikal region of Russia, the eastern and central parts of the Mongolian Republic, and the eastern and northeastern regions of the Inner Mongolia Autonomous Region of my country. , my country's Hebei, Ningxia and other places are also distributed. Leymus chinensis grassland accounts for 50% to 60% of the total grassland area in my country. It is one of the most representative grassland types in China. Leymus chinensis is of high quality and palatable. All kinds of livestock like to eat it all year round. First-...

AI Technical Summary

Problems solved by technology

Summarizing the current research results, mechanized improvement methods such as shallow plowing, heavy barley, and deep loosening are suitable for natural Leymus chinensis grasslands that have degraded soil compaction due to long-term non-nutrition and overloaded grazing, and artificial grasslands that have been planted for 7-8 years. However, these studies are currently only limited to a simple evaluation of the growth and effect of the improved vegetation, and the proposed improvement measures have not fully utilized the biological characteristics and genetic laws of Leymus chinensis, which mainly reproduces asexually in the natural growth environment; at the same time, research The farmland mechanized operation process mode directly copied from the mechanized operation methods such as shallow plowing, heavy plowing, and deep loosening proposed in the paper ignores the special situation that the grassland ecosystem is fragile and the organic matter layer of the grassland soil is shallow. Phenomena such as turning over and throwing soil greatly disturb the grassland soil, which can easily cause grassland vegetation damage and grassland soil desertification

[0006] Although some schemes have made breakthroughs in the field of Leymus chinensis cultivation by utilizing the characteristics of vegetative reproduction ability of Leymus chinensis, the factors that inhibit the vegetative reproduction of Leymus chinensis during the growth process, that is, the problems of soil compaction and high firmness still exist. The key technical problems of realizing the rejuvenation and growth promotion of Leymus chinensis by self-propagating factors have not been solved yet