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探讨了橡胶与砂仁、橡胶与咖啡间种和纯橡胶林3种栽培模式下的土壤微生物生物量及其与土壤有机碳和土壤微生物呼吸强度的关系。结果表明,在这3种模式下,土壤微生物生物量平均值由高到低的顺序为:橡胶+砂仁林地>纯橡胶林>橡胶+咖啡林地。其Cmic范围是380.8~568.3 mg/kg。橡胶+咖啡林地土壤微生物生物量在旱季高于雨季,而其余两种林地则在雨季较高。橡胶林间种作物后,林地土壤表现出比纯橡胶林地有较高的土壤微生物生物量和较短的土壤微生物的转化周期,年转化代数较多;同时,间种也大大改善了林内生态环境。
The relationship between soil microbial biomass and soil organic carbon and respiration intensity of soil microorganisms under three cultivation modes of rubber and Amomum villosum, rubber and coffee plantations and pure rubber plantation was discussed. The results showed that in the three modes, the order of soil microbial biomass from high to low was as follows: rubber + Amomum villosum forest> pure rubber forest> rubber + coffee forest land. The Cmic range is 380.8 ~ 568.3 mg / kg. The soil microbial biomass of rubber + coffee plantation was higher in the dry season than in the rainy season, while the other two forests were higher in the rainy season. Compared with pure rubber plantation, the woodland soil showed higher soil microbial biomass and shorter transformation cycle of soil microorganisms, with more annual algebra conversion. At the same time, intercropping greatly improved the ecological environment in the forest .