有机肥及秸秆对设施菜田次生盐渍化土壤修复效果研究

通过盆栽试验,系统研究了不同有机肥用量及秸秆用量对设施栽培次生盐渍化土壤的修复效果及对油菜生物量的影响。结果表明:与对照组土壤相比,有机肥和秸秆的5个处理均能显著降低土壤可溶性盐分;不同有机肥处理后土壤盐分呈先下降后上升的趋势,而不同秸秆处理后土壤盐分随秸秆用量的增加而降低;不同有机肥与秸秆处理均能显著增加油菜的生物量,油菜的生物量随有机肥及秸秆用量的增加呈先上升后下降的趋势;在油菜增产方面,有机肥明显优于秸秆。有机肥及秸秆能有效改良次生盐渍化土壤,是延长设施土壤使用年限,促进设施农业可持续发展的有效途径。

Effect of manure and straw on secondary salinity soil of greenhouse

The effect of different applying manure and straw on soil secondary salinization and rape biomass in greenhouse soil was studied by pot culture.Both manure and straw have installed five treatments and a control group.The results showed that the soil soluble salt in the soil treated by manure and straw were lower than the control group’s.The soil salt in the manure treatment groups could first decreased and then increased when the manure was applied furthermore.In the straw treatment groups,soil salt reduced with increase of amount of straw.The rape biomass in the groups of both manure and straw treatment were significantly larger than control group’s,and the manure was better than straw.While applying manure and straw could meliorate secondary salinity and enhanced soil quality,it was an effective way to achieve sustainable development of agriculture.