膜下滴灌对盐碱荒地耕层土壤理化性状的影响

A Study on the Drip Irrigation on Saline-Alkali and Uncultivated Soil Effect on the Soil Physical Character

以常规灌为对照 ,着重探讨了盐碱荒地薄膜覆盖滴灌甜菜土壤理化性质的变化特点。结果表明 :在甜菜生育过程中 ,膜下滴灌能降低膜下土壤容重 ,改善膜内耕层透气条件 ,并能降低膜下耕层土壤pH、水溶性总盐 ,利于甜菜在盐碱荒地正常生长 ,是苗期得以存活的重要原因。收获时 ,耕层有机质、全氮、碱解氮均有所下降 ,表明N2 4 0

Compared with old routine irrigation,the study probed further into effection seeding sugar beet of physical and chemical character on saline alkali and uncultivated soil,covered plastic film and drip irrigation.The study indicated that drip irrigation not only drop the soil unit weight,pH and asolution of all salt,but also can raise small opening of soil,drip irrigation is not only one of the important way to improve the saline alkali soil,but also can solve the lack of water resource.