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【题目】2016123日,霸王级寒潮如期而至,速冻全国,据统计本次寒潮南方的危害程度远远超过北方,尤其是农业。

1简析本次寒潮对我国南方农业造成危害较大的原因。

2列举应对寒潮,减少农业危害的措施。

答案】1降温幅度大,速度快;正值农产品上市季节,严重影响农产品品质和运输,经济损失较大

2加强对冻害的监测和预报,提前做好防范准备;培育和推广耐寒防冻品种,提高农作物的抗灾能力;在果园地面铺设稻草等覆盖物;给果树树干包裹稻草等。

【解析】

试题分析:1寒潮由快行冷锋所致,主要危害是降温,大风和雪灾,在农作物生长和收获时危害更大。本题主要回答降温幅度大,速度快;正值农产品上市季节,严重影响农产品品质和运输,经济损失较大

2本题为开放题,回答时多从提前防范上去思考。比如加强对冻害的监测和预报,提前做好防范准备;培育和推广耐寒防冻品种,提高农作物的抗灾能力;在果园地面铺设稻草等覆盖物;给果树树干包裹稻草等。

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