摘要
青稞作为一种籽粒裸露的特殊裸大麦是西藏高海拔地区极为重要的农作物。不同青稞品系的产量和高海拔生态多样性有内在的适应关系,研究气候积温、土壤养分两个维度生态因子对不同青稞品系的产量和质量影响具有重要的社会应用价值和理论价值。本文设计了一套实验,保持其他生态因子不变时,分别研究气候积温、土壤养分单因子变化时对青稞产量和品质的影响。结果显示:①青稞品质指标主要由品种决定,不同积温对青稞品质的影响不显著;②土壤p H和有机质含量对青稞品质影响显著;③积温、光照等自然条件对青稞产量的影响显著,土壤环境(p H、有机质)对青稞产量的影响差异不显著。积温和光照条件是影响青稞产量的主要因子,但土壤环境是影响青稞品质的主要因子,积温、光照和土壤环境共同影响青稞的产量和品质,从而影响青稞生产的合理布局。
Highland barley,as a kind of special naked barley with naked grains,is a very important crop in high altitude areas of Tibet.There is an internal adaptive relationship between the yield of different highland barley lines and the ecological diversity at high altitude. It has important social application value and theoretical value to study the impact of two ecological factors,climate accumulated temperature and soil nutrient,on the yield and quality of different highland barley lines. A set of experiments was designed to study the effects of climate accumulated temperature and single factor change of soil nutrients on the yield and quality of highland barley. The results showed that:( i)The quality index of highland barley was mainly determined by varieties,and the effect of different accumulated temperature on the quality of highland barley was not significant;( ii) The content of soil p H and organic matter had significant effect on the quality of highland barley;( iii) The natural conditions such as accumulated temperature and light had significant effect on the yield of highland barley,and the effect of soil environment( p H and organic matter) on the yield of highland barley was not significant. Accumulated temperature and light conditions are the main factors affecting the yield of highland barley,but soil environment is the main factor affecting the quality of highland barley. Accumulated temperature,light and soil environment together affect the yield and quality of highland barley,thus affecting the reasonable layout of highland barley production.
作者
关卫星
杨勇
董凯宁
张思源
罗黎鸣
GUAN Wei-xing;YANG Yong;ONG Kai-ning;ZHANG Si-yuan;LUO Li-ming(Agricultural Research Institute,Tibet Academy of Agricultural and Animal Husbandry Sciences,Tibet Lhasa 850032,China;Sichuan University Information Management System Department,Sichuan Chengdu 610064,China)
出处
《西藏农业科技》
2019年第4期32-36,共5页
Tibet Journal of Agricultural Sciences
基金
科技部重点研发项目“高海拔边境地区农牧业关键技术研究与示范专项-高海拔边境地区青稞绿色增产增效关键技术研究与集成示范”。
关键词
青稞
生态适应性
新品种
西藏高海拔
Highland barley
Ecological adaptability
New variety
High altitude in Tibet
作者简介
关卫星(1970-),男,研究员,主要从事青稞育种及农作物推广工作,E-mail:gwx9559@163.com。
