春(chun)天(tian)一来，商都县农牧和科技局局长庞学峰便忙于(yu)入农(nong)户、进(jin)田(tian)头，落实低耗水作物种(zhong)植计划。“从前(qian)都(dou)是把旱(han)地(di)改良为水地，提高农(nong)业单产。现在(zai)‘水(shui)改(gai)旱(han)’，只为(wei)保护察汗淖尔湿(shi)地(di)。”