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研究了不同种植年限有机土基质的理化性质变化及其对黄瓜生长的影响.结果表明:随着种植年限的增加,有机土栽培基质的理化性质变差,表现为容重增大、总孔隙度减小、土壤酸碱度降低、有效养分含量下降;有机土微生物区系中细菌、放线菌数量下降,真菌数量增多.随有机土种植年限的增加,黄瓜的生长受到一定影响,表现为株高、叶面积减小,光合功能衰退,黄瓜产量和品质下降,有必要对连续种植3年的有机土基质进行地力恢复.
The changes of physicochemical properties of organic soil substrates under different planting years and their effects on the growth of cucumber were studied.The results showed that the physicochemical properties of organic soil substrates degraded with increasing planting years, The soil pH decreased and the effective nutrient content decreased.The number of bacteria and actinomycetes in the organic soil microbial flora decreased and the number of fungi increased.With the increase of organic soil planting age, the growth of cucumber was affected to a certain extent, Area reduction, photosynthetic decline, cucumber yield and quality decline, it is necessary to continue planting three years of organic soil matrix for soil recovery.