春天一来，商(shang)都(dou)县(xian)农(nong)牧和科技局局长庞(pang)学峰便忙于(yu)入(ru)农户、进田头(tou)，落实低(di)耗水作物种(zhong)植(zhi)计(ji)划。“从前(qian)都(dou)是把旱地改良为水地，提高农(nong)业(ye)单产。现在‘水改旱’，只(zhi)为保护察(cha)汗(han)淖尔湿(shi)地(di)。”