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主要栽培作物的现代品种,对人工栽培措施很适应,但对那些极端的不可控的环境因素如温度,却没有高的忍耐力或抵抗力.由于作物对不利温度的忍耐力是可遗传的,所以选择和培育品种能够改良这一特性.
Modern varieties of major cultivated crops are well adapted to artificially cultivated measures but have no high endurance or resistance to those extreme uncontrollable environmental factors such as temperature.Because the endurance of crops to unfavorable temperatures is heritable, So selecting and cultivating varieties can improve this feature.