春天一来，商都县(xian)农牧和科(ke)技局局长(zhang)庞学峰便(bian)忙于入(ru)农(nong)户、进田头，落实低耗水作物种(zhong)植(zhi)计划。“从前(qian)都(dou)是把(ba)旱(han)地改良为水(shui)地(di)，提高农业(ye)单产。现(xian)在‘水改(gai)旱(han)’，只为保(bao)护察汗淖尔湿(shi)地。”