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　　春(chūn )天一来，商(shāng )都县农牧和科技(jì )局(jú )局长(zhǎng )庞学峰便(biàn )忙于(yú )入(rù )农户、进田头，落实低耗(hào )水(shuǐ )作物种(zhǒng )植(zhí )计划。“从(cóng )前(qián )都(dōu )是把(bǎ )旱地改良为(wéi )水地(dì )，提(tí )高农(nóng )业单产。现在‘水改旱(hàn )’，只(zhī )为保护察汗淖(nào )尔湿地。”