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青稞属禾本科大麦属,适应性较强,为甘南地区主要粮食作物之一,约占粮作面积的五分之二。青稞倒伏,是生产上普遍存在的问题,比其它禾谷类作物更为严重。倒伏后产量下降,品质变劣,管理收割困难,生产成本增高。倒伏减产程度,常随倒伏时间不同而不同。倒伏越早,产量损失越大。例如乳熟期以后倒伏仅减产10%,而在抽穗至乳熟期倒伏,产量损失可达30—46%。
The genus Barley is a highly adaptable barley that is one of the major food crops in southern Gannan, accounting for about two-fifths of the total area planted. Barley lodging is a pervasive problem in production and more serious than other cereal crops. After lodging the output drops, the quality deteriorates, the management of harvesting is difficult and the production cost increases. Lost yield, often with the lodging time varies. The earlier the lodging, the greater the loss of production. For example, milky lodging after yield only 10%, and in the heading to milky lodging, yield loss of up to 30-46%.