春天(tian)一来，商都县农牧和科技局(ju)局长庞学(xue)峰便(bian)忙于入农(nong)户、进(jin)田头，落实(shi)低耗(hao)水作物种植(zhi)计划。“从(cong)前都(dou)是(shi)把(ba)旱地改良为(wei)水地，提高(gao)农(nong)业单产。现在‘水(shui)改旱(han)’，只(zhi)为保护察汗淖(nao)尔湿地。”