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　　春(chūn )天一来，商都县(xiàn )农牧和科技局局(jú )长(zhǎng )庞(páng )学峰便忙(máng )于(yú )入农户、进田(tián )头(tóu )，落实低耗(hào )水(shuǐ )作物(wù )种植(zhí )计划。“从前都(dōu )是把旱地改良为(wéi )水地，提高(gāo )农业(yè )单产。现(xiàn )在‘水改旱(hàn )’，只为保护(hù )察(chá )汗(hàn )淖(nào )尔湿(shī )地。”