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经两年观测和多因素综合试验结果表明：高寒山旱地春小麦蘖群结构单一，分蘖及分蘖成穗率低。蘖群以Ｉ＿１、Ｉ＿２位蘖和鞘蘖为主要构成成分，分别占分蘖总的的５６％、３５．３％和３．９％；Ｉ＿２位以上蘖和二级蘖较为罕见，一般不足分蘖总量的５％。单株分蘖数平均为１．３，单株分蘖成穗率低于５％，分蘖及分蘖成穗率对水肥营养及群体密度存在显著相关性，但分蘖及分蘖成穗率的提高不能伴随群体产量的明显增加。旱地春小麦栽培的中心在于促控主茎成穗率及成穗质量。
After two years of observation and multi-factor comprehensive test results show that: alpine mountain dry spring wheat tiller group single structure, tillering and tillering rate is low. The tillers were mainly composed of tillers and sheath tillers of I_1 and I_2, accounting for 56%, 35.3% and 3.9% of the total tillers, respectively. Tillers with tillers above I_2 were rare, and tillers 5% of the amount. The average number of tillers per plant was 1.3, the tillering rate per plant was less than 5%, and the tillering rate and tillering rate were significantly correlated with the water, fertilizer and population density. However, the increase of tillering and tillering rates should not be associated with the population Significant increase in production. Dry spring wheat cultivation center is to promote the main stem into the ear rate and ear quality.