【題目】“天山南北好牧場,葡萄瓜果甜又甜……戈壁沙灘變良田,積雪融化灌農(nóng)莊……”根據(jù)歌詞回答下面小題。
【1】歌詞描述的省級行政區(qū)是( )
A. 云南省B. 湖北省C. 海南省D. 新疆維吾爾自治區(qū)
【2】該地區(qū)“葡萄瓜果特別甜”是由于( )
A. 內(nèi)陸盆地,地形閉塞B. 沙漠地區(qū),土壤肥沃
C. 高山冰雪,水源充足D. 日照充足,晝夜溫差大
【答案】
【1】D
【2】D
【解析】
新疆光照充足,但降水少,農(nóng)產(chǎn)品植物白天光合作用劇烈,有利于著色,晝夜溫差大,晚上氣溫很低,使農(nóng)作物呼吸作用減弱。降低了瓜果積累的糖分消耗。
【1】新疆是我國主要的牧區(qū),所出產(chǎn)的肉、奶、皮、毛等畜產(chǎn)品在國內(nèi)占據(jù)突出地位,天山牧場是重要的畜牧基地。由于日照時數(shù)多,晝夜溫差大,有利于長絨棉、甜菜、小麥等農(nóng)作物的生長,杏、桃、梨、葡萄、哈密瓜等水果蜚聲中外;故選:D。
【2】新疆深居內(nèi)陸,距海較遠(yuǎn)降水稀少,氣候干旱;白天日照充足,熱量豐富,植物光合作用效率很高;到了夜晚,驟然降溫,晝夜溫差大,大氣和土壤中的熱量迅速散失,植物進入“休眠”狀態(tài),自身呼吸作用大幅度減弱,白天借助于光合作用所形成的養(yǎng)分得以有效積累,從而使瓜果的質(zhì)量大為提高;故選:D。
本題考查了新疆的農(nóng)業(yè)及發(fā)展農(nóng)業(yè)的有利于條件。
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