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- W2990761185 abstract "The continuous cropping obstacles caused by the increase of kiwifruit planting period resulted in imbalance of soil microbial community structure, and decrease of soil enzyme activity and physicochemical indicators, which substantially reduced both the quality and yield of kiwifruit. Under the field conditions, the traditional fertilization of fruit farmers was used as a control (CK) to study the effects of two different microbial fertilizers, JF and KF, which had been verified the growth promotion of kiwifruit aseptic seedlings test, on soil microbial community structure, soil enzyme activities, soil physicochemical characters during different growth periods of kiwifruit (germination period, florescence period, fruit enlargement period, fruit ripening period and next year germination period), as well as fruit quality. The results showed that both fertilizers significantly increased the ratio of bacteria with fungi and the ratio of actinomycetes with fungi in the kiwifruit orchard soil, indicating that they could improve and balance the soil microbial community structure. The enzymes activity in kiwifruit orchard soil with the addition of both fertilizers were significantly higher than that in CK, and among which sucrose, urease, phosphatase and polyphenol oxidase were increased by 17.9%-83.5%, 7.9%-83.0%, 7.3%-45.4% and 8.1%-140.3%, respectively. JF and KF increased soil fertility (the concentrations of available nitrogen, phosphorus, potassium, total nitrogen, total phosphorus, total potassium, and organic matter content significantly increased) and decreased soil pH (a decrease of 0.29 to 0.34). After application of microbial ferti-lizer, the content of vitamin C, soluble sugar, soluble protein and other contents of kiwifruit increased, and the titratable acid content decreased. Therefore, the application of both fertilizers could balance soil microbial community structure, enhance soil fertility, and improve the fruit quality of kiwifruit. Our results provide robust theoretical basis for the application of microbial fertilizers in the old-aged kiwifruit orchards.猕猴桃种植年限增加导致的连作障碍使土壤微生物结构失调、土壤酶活性及理化指标降低,进而严重降低了猕猴桃品质和产量.在大田试验条件下,本研究以果农传统施肥为对照,探究两种对猕猴桃幼苗有促生作用的微生物肥料JF和KF(通过无菌苗试验验证促生效果)对猕猴桃不同生育时期(发芽期、开花期、果实膨大期、果实成熟期、次年发芽期)土壤微生物结构、土壤酶活性、理化指标以及果实品质的影响.结果表明:两种微生物肥料均能显著提高猕猴桃果园土壤细菌、放线菌与真菌的比值,改善和平衡土壤微生物群落结构;同时显著提高猕猴桃果园土壤酶活性,其中蔗糖酶、脲酶、磷酸酶和多酚氧化酶较对照分别高17.9%～83.5%、7.9%～83.0%、7.3%～45.4%和8.1%～140.3%;增强土壤肥力(速效氮、磷、钾、全氮、全磷、全钾、有机质含量显著提高),降低土壤pH(较对照下降0.29～0.34个单位).施用微生物肥料后猕猴桃果实维生素C、可溶性糖、可溶性蛋白等含量升高,可滴定酸含量下降.因此施用两种微生物肥料均能平衡土壤微生物群落结构,增强土壤肥力,提高猕猴桃果实品质.该研究结果可为微生物肥料在高龄猕猴桃果园的应用提供有力的理论依据." @default.
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- W2990761185 date "2018-08-01" @default.
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- W2990761185 title "[Effects of microbial fertilizer on soil improvement and fruit quality of kiwifruit in old orchard.]" @default.
- W2990761185 doi "https://doi.org/10.13287/j.1001-9332.201808.025" @default.
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