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[目的]明确氯化苦对重茬草莓土壤生物(微生物数量)和非生物因子(酶活性和肥力)是否有影响。[方法]采用田间熏蒸技术,以草莓缓苗期和幼果期土样为研究对象。[结果]氯化苦熏蒸后,2个生育期土壤中细菌和真菌数量均显著降低,放线菌数量则表现为抑制-恢复的趋势;氯化苦对2个时期土壤脲酶活性均为强烈的抑制作用,对磷酸酶活性表现为抑制-恢复到对照水平,而对蔗糖酶活性均影响不大;氯化苦处理对土壤肥力的影响基本都呈显著的下降变化趋势。[结论]在草莓缓苗期和幼果期,氯化苦对土壤细菌和真菌数量、脲酶活性及土壤肥力有抑制作用,而对土壤放线菌数量、磷酸酶及蔗糖酶活性影响不大。
[Objective] The purpose of this study was to clarify whether chloropicrin had any effect on soil biological (microbial quantity) and non-biological factors (enzyme activity and fertility) of cropping strawberries. [Method] Field fumigation was used to study the strawberry seedling stage and young fruit stage soil samples. [Result] The numbers of bacteria and fungi in the soil of two growth stages were significantly decreased and the numbers of actinomycetes were inhibited-recovered after chloropicrin fumigation. The soil urease activity of chloropicrin was strong for both periods Inhibition on the activity of phosphatase showed inhibition - return to the control level, but have little effect on the activity of sucrase; chloropicrin treatment of soil fertility basically showed a significant downward trend. [Conclusion] Chloropicrin had inhibitory effect on soil bacteria and fungi, urease activity and soil fertility in strawberry rearing stage and young fruit stage, but had little effect on the amount of soil actinomycetes, phosphatase and invertase activity.