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为了评价加拿大西部１９１０—１９８７年间发放的春大麦品种的产量进展以及产量组份和农艺性状对产量所起的作用，于１９８９—１９９０年在Ｂｏｔｈａ、ｌａｃｏｍｂｅ、Ｏｌｄｓ三个地点对２０个六棱和二棱栽培品种进行了试验．结果表明，籽粒产量每年增加１２．７—４１．４ｋｇ／ｈｍ２，收获指数每年增加０．０８％—０．１７％，倒伏每年减少０．０１—０．０５％，种子蛋白质含量每年减少０．０１—０．０２ｇ／ｋｇ．１９９０年在Ｂｏｔｈａ和ｏｌｄｓ，容重与发放时间具有正效应．在某些地点、年份，穗数／ｍ２和网斑病严重程度与发放时间也有关，但相关性较低．营养产量、植株群体、籽粒重量、每穗粒数、芸纹病的抗性长期以来没有变化．籽粒产量的提高与收获指数的增加和倒伏的减少密切相关．进一步增加营养产量、籽粒重量、每穗粒数，同时维持目前的收获指数和抗倒性是今后努力方向。
In order to evaluate the progress of yield of spring barley varieties distributed in western Canada from 1910 to 1987 and the effect of yield components and agronomic traits on the yield, Prickly cultivars were tested. The results showed that the grain yield increased by 12.7-41.4kg / hm2 per year, the harvest index increased by 0.08% -0.17% per year, lodging decreased by 0.01-0.05% per year, and the seed protein content decreased by 0 per year. 01-0.02g / kg. In Botha and olds in 1990, bulk density and delivery time had a positive effect. In some locations, the year, spikes / m2, and the severity of the net blotch were also related to the time of release but less relevant. Nutritional yield, plant population, grain weight, grain number per spike, resistance to ruttle disease have not changed for a long time. The increase of grain yield is closely related to the increase of harvest index and the decrease of lodging. Further increases in nutrient yield, grain weight, grains per panicle, while maintaining the current harvest index and lodging resistance are the direction of future efforts.