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　　春天(tiān )一来，商都(dōu )县农(nóng )牧和科技局(jú )局(jú )长(zhǎng )庞学峰便忙于入农户、进田(tián )头，落实低耗(hào )水作物种(zhǒng )植计(jì )划。“从前(qián )都(dōu )是把旱地改(gǎi )良为水地，提高(gāo )农(nóng )业单(dān )产。现(xiàn )在‘水改(gǎi )旱’，只为保(bǎo )护(hù )察汗淖尔湿地。”