春(chun)天一来，商(shang)都县农(nong)牧和(he)科技(ji)局局长(zhang)庞学(xue)峰便忙于入农(nong)户、进田头，落实低耗水作物(wu)种(zhong)植计划。“从前都(dou)是把旱(han)地改(gai)良为水(shui)地，提(ti)高农(nong)业单产。现(xian)在‘水改旱’，只为保护察(cha)汗淖(nao)尔湿地。”