春天一来，商都(dou)县(xian)农(nong)牧和科技局局(ju)长庞学峰便忙(mang)于入农(nong)户、进(jin)田头，落实(shi)低耗水作物种(zhong)植计划。“从(cong)前(qian)都是把旱地改良为水地，提高农(nong)业单(dan)产。现(xian)在‘水改旱(han)’，只为(wei)保(bao)护(hu)察汗淖尔湿(shi)地。”