Study on Adaptability of Different Forage Species in Desert Steppe of North Foot of Qilian Mountains
[Objective]In order to screen out the most suitable forage species and the best mixed sowing type,to provide scientific basis for ec-ological restoration of degraded grassland.[Method]The adaptability research of reseeding and mixed sowing of the 9 species of Cleistogenes songorica,Krascheninnikovia ceratoides,Artemisia desertorum,Agriophyllum squarrosum,Haloxylon ammodendron,Seriphidium nitrosum,Kochia prostrata,Sarcozygium xanthoxylon and Melilotus suaveolens in the temperate desert steppe at the northern foot of Qilian Mountains was conduc-ted.The indexes of growth height,coverage and yield of different varieties and different mixed sowing combinations were investigated and recor-ded.[Result]The results showed that:the growth and development performance of Cleistogenes songorica,Artemisia desertorum and Agriophyllum squarrosum were better than other varieties,and the grass yield was higher,were 6680.5,5329.5 and 5259.0 kg/hm2 ,respectively,with strong regional adaptability.Agriophyllum squarrosum + Krascheninnikovia ceratoides + Cleistogenes songorica + Melilotus suaveolens mixture and Cleis-togenes songorica+Artemisia desertorum + Krascheninnikovia ceratoides+ Seriphidium nitrosum mixture,could significantly increase the yield of grassland,and were the best type of mixed sowing for the restoration in degraded desert grassland.[Conclusion]The adaptability and yield of the Cleistogenes songorica,Artemisia desertorum and Agriophyllum squarrosum were good,so they could be used as the suitable grass species for des-ert steppe improvement.
万方数据
维普
