在高产环境中,生产性能试验有助于鉴定导致稳产和高产的环境因子或于其他环境中限制生产力的因子.高产区之间的环境因子和管理技术的比较分析对了解作物的适应性是有用的.如在欧洲和美国西北部,小谷类作物的冬性品种可获得高产,而在南方,特别在灌溉条件下,春性品种秋播或冬播可获高产. In productive environments, productive performance tests can help identify factors that contribute to stable and high yielding environmental factors or to limit productivity in other environments. Comparative analysis of environmental factors and management techniques in high-yielding areas is useful in understanding crop suitability As in winter in Europe and the northwestern United States, winter varieties of small-grain crops are highly productive, whereas spring or autumn winter sowing is more productive in the south, especially under irrigation.