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　　春天一(yī )来(lái )，商(shāng )都县农(nóng )牧和科(kē )技(jì )局(jú )局长(zhǎng )庞学峰(fēng )便忙于入农户、进田(tián )头，落实(shí )低耗(hào )水作物种植计划(huá )。“从前都(dōu )是把旱(hàn )地(dì )改(gǎi )良为水(shuǐ )地，提(tí )高(gāo )农(nóng )业(yè )单产(chǎn )。现在‘水改旱’，只为保(bǎo )护察汗淖(nào )尔湿地。”