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对山地橄榄园连续4年种植牧草羽叶决明。结果表明,橄榄园生草促进了土壤理化性状的改善,不同土层土壤容重均有不同程度的下降,0~10、10~20 cm土层土壤容重显著低于对照,分别下降了0.33、0.21 g/cm3;不同土层土壤孔隙度均较对照有所提高,0~10、10~20 cm土层土壤孔隙度显著高于对照,分别提高18.2%、14.0%;10~20 cm土层土壤含水量显著下降,30~40 cm土层土壤含水量显著提高;0~20 cm土层土壤碱解氮、速效磷、速效钾、有机质含量均显著高于对照,其中以速效钾含量增幅最大,增幅达210.2%;土壤pH值与对照差异不显著,仅降低8.2%;2009—2012年橄榄667 m2产量显著提高了8.0%~11.1%。
For four consecutive years on the mountain olive garden planted feather Cassia. The results showed that the grass planting in olive groves promoted the improvement of soil physical and chemical properties, and the soil bulk density of different soil layers decreased in varying degrees. The soil bulk density in 0-10, 10-20 cm soil layers was significantly lower than that of the control, decreasing by 0.33 and 0.21 g / cm3. The porosity of soil in different soil layers was higher than that of the control. The soil porosity in 0-10 and 10-20 cm soil layers was significantly higher than that of the control, increasing by 18.2% and 14.0% The soil water content in 30 ~ 40 cm soil layer was significantly increased. The contents of available nitrogen, available phosphorus, available potassium and organic matter in 0 ~ 20 cm soil layer were significantly higher than those in CK, of which the content of available potassium increased at the maximum, An increase of 210.2%. The difference of soil pH value with the control was not significant, only decreased by 8.2%. The output of olive 667 m2 increased significantly from 8.0% to 11.1% in 2009-2012.