沿黄盐碱地综合改良试验研究

在禹西盐碱地农业生态示范区台田上采取多种农艺措施改良土壤,其有机质含量达11.9 g/kg,土壤水解氮达149.25 mg/kg,土壤铵态氮达23.75 mg/kg,土壤有效磷和速效钾分别达到22.412 mg/kg和39.938 mg/kg,土壤含盐量降至1.265 g/kg,土壤碳酸盐降至零,从而降低了高盐、高碱、高pH对农作物带来的危害;土壤理化性状与对照组相比得到了明显改善,"碱斑"消失,小麦和玉米产量逐年增加,2003年达到850 kg/667 m2.

Studies on Integrated Improvement Tests of Saline and Alkaline Soil along the Yellow River

A series of agricultural measures were adopted in the field of agricultural ecology demonstration section of saline and alkaline soil in Yuxi district to improve the soil.The organic matter reached 11.90 g/kg,hydrolyze nitrogen in soil reached 149.25 (mg/kg),available phosphorus and available potassium in soil reached 22.412 mg/kg and 39.938 mg/kg respectively,the total salts in the soil dropped to 1.265 g/kg and carbonate dropped to zero in the soil.Subsequently the harm caused by high salinity,high alkalinity and high pH were decreased and chemical and physical characters of the soil gained distinct improvement in comparison with the contrast.The soil alkali spot disappeared.The yield of wheat and corn increased year after year with annual yield already reaching 850 kg/667 m~(2) in 2003.