鲁梅克斯对草甸盐土的改土效应研究

The desalting and amelioration effects on meadow saline soil of growing Rumex K-1

在草甸盐土上种植鲁梅克斯Rumexpatientia×R tianschanicuscv RumexK-1,脱盐改土效果十分明显。种植鲁梅克斯3～4年,鲜草产量达100 51t/hm2,pH值由8 43降为7 99,耕作层土壤总孔隙度增加5 29%～7 06%,土壤容重降低0 14～0 21g/cm3,水稳性团粒结构增加23 14%～32 34%,自然含水量增加72 12～89 44g/kg,土壤有机质、速效氮、磷、钾亦随之增加。

Planting Rumex patientia×R. tianschanicus cv.Rumex K-1 on meadow saline soil resulted in obvious desalting and amelioration effects. After growing Rumex K-1 for 3-4 years, fresh grass yield reached 97.07～100.51 t/hm^2, pH value decreased from 8.43～7.99, the total porosity for soil depth 0～20 cm increased from 5.29%～7.06%, soil bulk density decreased from 0.14～0.21 g/cm^3, the water-stable granular structure increased from 23.14%～32.34%, the natural soil moisture content increased from 72.12～89.44 g/kg, and the soil organic matter, and rapidly available N, Pa and K also increased.