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春季干旱对冬小麦产量结构的影响因干旱出现的时段不同而异 :在拔节期前出现干旱 ,对小麦产量结构影响程度较轻 ;拔节期以后影响程度最重。采取灌溉、蓄水保墒、选用抗旱小麦良种等技术措施 ,能有效地预防干旱或减轻干旱造成的损失
The effect of spring drought on the yield structure of winter wheat varies with the period of drought occurrence: drought occurs before jointing stage, which has less influence on the yield structure of wheat; and the heaviest impact after jointing stage. Irrigation, water conservation, selection of drought-resistant wheat seeds and other technical measures can effectively prevent or alleviate the drought caused by the loss of drought