我县250万亩风沙、洼碱、黄土岗地,由于改善了土壤条件,提高了抗御自然灾害的能力,为农业高产稳产奠定了基础.一、改良洼碱地.全县洼碱地占耕地面积的20%,土质碱性大,冷浆,不保苗,不发苗,积水易涝,粮食产量低.改良措施是:搞撤水撤碱、排水治涝工程,配合增肥改土,选种抗碱抗涝品种.大四公社有洼碱 The county of 2500000 mu of wind and sand, depression, loess hillock, due to improved soil conditions, improve the ability to resist natural disasters, for high and stable agricultural production has laid the foundation. Of the 20% soil alkaline big, cold slurry, no seedlings, no hair seedlings, water floods, food production is low.An improvement measures are: pull withdrawal of water, drainage waterlogging project, with the increase of soil and fertilizer, Kinds of anti-alkali and waterlogging varieties