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　　春(chūn )天一来，商都(dōu )县农牧和科技(jì )局(jú )局(jú )长庞学峰便忙于入(rù )农户(hù )、进田(tián )头，落实(shí )低(dī )耗(hào )水作物种植计划(huá )。“从前都是把旱地(dì )改(gǎi )良为(wéi )水(shuǐ )地，提高(gāo )农(nóng )业单产。现在(zài )‘水(shuǐ )改旱’，只(zhī )为保护察汗淖(nào )尔湿地(dì )。”