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　　春(chūn )天一来，商都(dōu )县农牧和科技(jì )局(jú )局(jú )长庞学(xué )峰便忙于入(rù )农户、进(jìn )田(tián )头，落实低耗水作(zuò )物(wù )种(zhǒng )植(zhí )计(jì )划。“从前都是把旱地改良为水地(dì )，提高(gāo )农(nóng )业(yè )单产。现在‘水改旱’，只为保护察汗(hàn )淖尔(ěr )湿地。”