春(chun)天(tian)一来，商都县农(nong)牧和科技(ji)局局长(zhang)庞学(xue)峰便忙于(yu)入农(nong)户、进田(tian)头，落实低耗(hao)水作物种(zhong)植(zhi)计划。“从前都是(shi)把旱地改良(liang)为水地，提高(gao)农业(ye)单产。现(xian)在‘水改旱’，只为保(bao)护(hu)察汗(han)淖尔湿(shi)地。”