如(rú )今燕麦(mài )草、小杂(zá )粮、覆膜马铃薯等(děng )耐旱作物“当家”，以水定粮改变了察(chá )汗(hàn )淖尔湿地周边农(nóng )业(yè )形态。庞学峰给(gěi )记者(zhě )算了一笔账(zhàng )：种植燕麦草，只搞“雨养”农业，不(bú )使(shǐ )用(yòng )地(dì )下水。成本下降，加(jiā )上(shàng )轮作和“水改旱”补贴，亩效益(yì )可(kě )比种甜(tián )菜增(zēng )加200元人(rén )民币左右。