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Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (6): 178-188.DOI: 10.11686/cyxb2021396

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Effects of different cultivation measures on the establishment and turf quality characteristics of Achnatherum inebrians lawn

He-na LIAN(), Chun-jie LI()   

  1. State Key Laboratory of Grassland Agro-Ecosystems,College of Pastoral Agricultural Science and Technology,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,State Key Laboratory of Engineering Research Center of Grassland Industry,Ministry of Education,Center for Grassland Microbiome,Western China Technology Innovation Center for Grassland Industry,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China
  • Received:2021-11-01 Revised:2021-12-23 Online:2022-06-20 Published:2022-05-11
  • Contact: Chun-jie LI

Abstract:

Achnatherum inebrians carries the Epichlo? endophytic fungus and as a result exhibits insect resistance and bird repellency. It has great potential as a bird repellent grass species for use on airport surrounds in Northwest China. In order to develop the application of drunken horse grass as a bird repelling ground cover in airport surrounds, different establishment methods were trialed. In particular, the effects on establishment and lawn turf quality of seed soaking with plant growth regulator (0.136% gibberellic acid·indol-3-ylacetic acid·brassinolide wettable powder), covering with different mulch materials at establishment and a combination of the two, were explored for drunken horse grass lawn. In this experiment, the seedling emergence rate, speed of turf formation, growth rate, density, ground cover, color, texture, uniformity, grass height and other indexes were measured at the seedling emergence and turf formation stages, and the data were subjected to multivariate evaluation. It was found that non-woven fabric mulching and seed soaking with growth regulator+non-woven fabric mulching treatments had the earliest seedling emergence and the fastest turf formation rate. For the treatment of seed soaking with plant growth regulator+non-woven fabric mulching, the growth rate of drunken horse grass was slower; However, the grass density, chlorophyll content and turf uniformity all exceeded those of the control and other treatments. The lawn ground cover was higher under non-woven fabric mulching and seed soaking with plant growth regulator+straw mulching. The multivariate evaluation results showed that the overall quality of drunken horse grass lawn under seed soaking with plant growth regulator+non-woven fabric mulching was the best. This establishment methodology is therefore recommended as the best cultivation measure and suitable for adoption in industry practice.

Key words: Achnatherum inebrians, turf performance, cultivation measures, bird repellent grass