陡坡地灌桑垄槽栽培技术研究

STUDIES ON RIDGE-TROUGH CULTIVATION OF BUSH MULBERRY ON STEEP SLOPE LAND

陡坡地灌桑垄槽栽培技术试验结果，免除土壤侵蚀的危害，其５０厘米、１００厘米土壤中，比对照区持水量高１０．２０％－３３．６７％、８．２７％－６５．３７％，含全氮率为对照的９０％、相同，含全磷率高２．９％、２６．２％，含全钾率高３．１８％、８．０１％，而水解氮均为对照的６１．５％，速效磷高３９．０２％、９７．７２％，速效钾为对照的９１．４８％、９２．５４％。亩产叶量和产茧量均较对照高５－１０倍，经济效益较对照高１１．８８倍。

The results showed that compared with the control,soil erosion was controlled completely by following ridge-trough cultivation techniques.Soilnutrient concentrations in both soil profiles of 0 to 50 cm and 0 to 100 cm were 90% and 100% of the control re-spectively for total N,102.9% and 126.2% for total,103.2% and 108.O% for total K,61.5% both for available N(hydrolysed),13.0% and 197.7% for available P and 91.5% and 92.5% for available K. The leaf and cocoon production increased by 5 to 10times over the control.The economic benefits were increased by 11.88 times. The social,economic and ecological benefitsare significant.