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近６０％的加拿大硬粒小麦产自于南萨斯喀彻温省的半干旱褐土带。硬粒小麦联合试验（ＤＷＣＴ）提供了评价有开发潜力新品种的手段，它位于萨斯喀彻温省褐土带中心附近的ＳｗｉｆｔＣｕｒｒｅｎｔ，已有５０年以上的种植历史。从ＤＷＣＴ获取的历年产量资料与日均雨量和最大日均温度资料进行了分析，其目的是改进气候变异对生长在该区硬粒小麦效应的了解能力。气候变量与籽粒产量间最大相关性发生于６月底至７月上旬的开花期。与每平方米穗粒数的相关性最大的是６月底，而与粒重相关最大的是７月第３周。该褐土带限制产量最显著气候因子是开花期前后的每平方米穗粒数较少，籽粒容重和成熟时间显然受７月气候的影响，株高则由６月底的气候所决定，对日最高温度２０、２４、２８和３０℃以上的积温分析表明，＞２４℃可能是７月上旬决定性的因子温。７月前３周期间，＞２０℃温度与产量呈负相关。在半干旱区，未来产量的获得主要取决于花期更耐旱和抗高温品种的培育。
Nearly 60% of Canadian durum wheat is from semi-arid cinnamon soil in southern Saskatchewan. The Duroc Wheat Joint Test (DWCT) provides a means of evaluating new breeds with potential for development, and is located in SwiftCurrent near the center of the Saskatchewan Cinnamon Belt for more than 50 years. The historical yield data obtained from DWCT and the data on average daily rainfall and maximum daily average temperature were analyzed to improve the ability of climate variability to understand the effects of durum wheat growing in the region. The greatest correlation between climate variables and grain yield occurs at the flowering stage from late June to early July. The highest correlation with grain number per square meter was at the end of June, while the most significant correlation with grain weight was in the third week of July. The most notable climatic factor of the yield-limiting cinnamon soil was the less spikes per square meter before and after florescence. The grain weight and maturity time were obviously affected by the climate in July. The plant height was determined by the climate at the end of June. An accumulated temperature analysis of up to 20, 24, 28, and 30 ° C shows that> 24 ° C may be the decisive factor in early July temperature. During the three weeks before July, the temperature> 20 ℃ was negatively correlated with the yield. In semi-arid areas, future production depends largely on the more drought-tolerant and temperature-resistant cultivar.