草业学报2019，Vol.28Issue(2)：51-60,10.DOI:10.11686/cyxb2018135
农户生产水平的"腾格里"无芒隐子草种子脱粒与清选技术研究
An evaluation of smallholder seed threshing and cleaning technologies in seed production of Cleistogenes songorica cv. 'Tenggeli'
摘要
Abstract
Cleistogenes songorica 'Tenggeli'is a new "wild"grass cultivar registered by the Chinese Herbage Variety Registration Board in 2016 (Registration No:499), which has excellent drought tolerance and soil stabilization capacity, and so plays an important role in ecological regeneration, landscaping, and grassland restoration in arid and semiarid areas.However, there is an urgent need to accelerate seed multiplication and to develop feasible seed threshing and cleaning techniques.Based on a preliminary trial we conducted at an experimental station in Yuzhong County, Gansu Province, further research was carried out in Minqin County in the Hexi Corridor, Gansu Province, to evaluate the suitability of the seed threshing and cleaning techniques developed, for use by smallholder farmers.For naturally dried seed-heads, 45-55 passes under a 50 kg roller resulted in the highest harvest rate (up to 78％ of total seed present), without loss of seed quality.The optimum airflow velocity for seed cleaning was 4.5m·s-1, and seed purity attained with this airflow velocity and two passes over a sieve, was up to 86％.These data are of great importance for C.songorica 'Tenggeli'seed production, as improved seed availability will enhance the extension process and the user adoption of this important new cultivar.关键词
"腾格里"无芒隐子草/种子脱粒/种子清选/收获率/种子质量Key words
Cleistogenes songorica &apos/Tenggeli&apos/seed threshing/seed cleaning/harvest rate/seed quality引用本文复制引用
陶奇波,贾存智,王彦荣,李欣勇,韩云华,白梦杰..农户生产水平的"腾格里"无芒隐子草种子脱粒与清选技术研究[J].草业学报,2019,28(2):51-60,10.基金项目
甘肃省草牧业试验试点和草业技术创新联盟科技支撑项目(GCLM2017-2) （GCLM2017-2）
国家重点基础研究发展项目(973项目)(2014CB138704) （973项目）
草地农业生态系统国家重点实验室基本科研业务费资助 （）
