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通过温室盆栽试验,研究了套作双孢蘑菇(Agaricus bisporus)对潮土速效养分含量、微生物数量、关键酶活性以及番茄(Lycopersicon esculentum Mill.)生长的影响。结果发现,与对照相比,添加双孢蘑菇培养基质对土壤有机碳、矿质氮与速效磷含量均没有显著影响,但速效钾含量显著增加(P<0.05),且土壤细菌数量趋于增加、真菌数量显著减少(P<0.05),土壤脲酶与磷酸酶活性显著增强(P<0.05)、纤维素酶活性显著下降(P<0.05),番茄植株地上部和地下部生物量分别增加130%和67%,但产量没有明显变化;在添加培养基质基础上再接种双孢蘑菇菌种与不接种相比显著降低土壤有机碳含量和脲酶活性(P<0.05),番茄植株生物量也降到与对照相接近的水平,尽管番茄产量没有明显变化,但额外收获了双孢蘑菇。结果表明,套作双孢蘑菇对潮土生物活性具有促进作用,并可以增加单位面积经济产出,因而在潮土地区具有推广潜力。
Pot experiments were conducted to study the effect of Agaricus bisporus on soil available nutrient content, microbial population, key enzyme activities and the growth of tomato (Lycopersicon esculentum Mill.). Compared with the control, Agaricus bisporus culture medium had no significant effect on soil organic carbon, mineral nitrogen and available phosphorus, but the content of available potassium increased significantly (P <0.05), and the quantity of soil bacteria tended to increase, (P <0.05). The activities of urease and phosphatase in soil were significantly increased (P <0.05) and the activities of cellulase were significantly decreased (P <0.05). The biomass of shoots and roots in tomato plants increased by 130% and 67%, but the yield did not change significantly. On the basis of adding culture medium, the inoculation of Agaricus bisporus strain significantly reduced soil organic carbon content and urease activity (P <0.05) compared with non-inoculation, and the tomato plant biomass also decreased to Nearly the same level of contrast, Agaricus bisporus was additionally harvested despite no significant changes in tomato yield. The results showed that Agaricus bisporus had the promotion effect on the biological activity of the alluvial soil and could increase the economic output per unit area, so it had the potential for popularization in the alluvial soil.