生物有机肥对连作压砂田土壤肥力及西瓜品质的影响
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(宁夏大学农学院,宁夏 银川 750021)

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李停锋(1995-),男,宁夏隆德人,在读硕士研究生,主要从事干旱区农业资源利用与植物营养研究。E-mail:927891845@qq.com。

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基金项目:国家自然科学基金项目(41761054);宁夏重点研发计划项目(2018BBF02019,2018BBF02004);宁夏自治区科技惠民项目(2019CMG03013)。


Effects of bio-organic fertilizer on soil fertility and watermelon quality in continuous cropping sand pressing field
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(School of Agronomy NingxiaUniversity,Yinchuan Ningxia750021)

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    摘要:

    为解决宁夏连作压砂西瓜田土壤肥力和果实品质下降的问题,通过施用生物有机肥改土培肥,提高压砂西瓜产量和品质。本试验以“金城 5号”为试验材料,通过田间小区试验研究了生物有机肥不同施用量对土壤肥力及压砂西瓜品质、产量的影响。结果表明,施用生物有机肥 3 750 kg·hm -2处理 0~ 20 cm土壤 pH值为8.39,较 CK处理降低1.76%;全盐含量为 2.34 g·kg -1,较 CK处理降低26.18%,0~ 20 cm土壤有机质含量较 CK处理提高 12.99%;碱解氮含量较 CK处理提高 56.06%;有效磷含量较 CK处理提高 71.63%;速效钾含量较 CK处理提高28.78%,0~ 20 cm土壤全氮含量较 CK处理提高176.84%;全磷含量较 CK处理提高92.53%。随着土壤理化性质的改善,土壤酶活性也呈现升高趋势,说明两者存在相关性。施用生物有机肥 3 750 kg·hm -2处理下西瓜果实品质提高,可溶性固形物含量达到 14.69%,较 CK处理升高 22.62%;有机酸含量为 0.051%,较 CK处理降低41.38%;维生素 C含量达到 12.74 mg·kg -1。通过比较,生物有机肥 3 750 kg·hm -2为最佳施用量,施用生物有机肥可改善压砂西瓜连作土壤的肥力水平,有效提高土壤酶活性、压砂西瓜产量及品质,有利于宁夏压砂西瓜产业的可持续发展。

    Abstract:

    In order to solve the problem of soil fertility deterioration and fruit quality decline in Ningxia sandwatermelon, the effects of different quantity of bio-organic fertilize on quality and yield of watermelon were studied in field plot experiment using“Jincheng No. 5”as the experimentalmaterial.The results showed that when 3 750 kg·hm -2 bio-organic fertilizer wasapplied,the soil pH was8.39,the total salt content was 2.34 g·kg -1,which decreased 1.76% and26.18%,respectively, compared to CK in 0~20 cm soillayer.The distribution range of organic matter increased by12.99%,the content ofalkali nitrogen increased by56.06%,the content of available phosphorus increased 71.63% and the available potassiumincreased 28.78% compared withCK.The total nitrogen content of 0~ 20 cm soil layer increased by 176.84% and the totalphosphorus content increased by 92.53% compared withCK.With the improvement of soil physical and chemicalproperties,soil enzyme activity also showed increasing trend.The soluble solid content reached14.69%,which increased by 22.62%thanCK.The organic acid content was 0.051% and decreased by 41.38% compared withCK.The vitamin C content reached 12.74 mg·kg -1.The best application rate of bio -organic fertilizer was 3 750 kg·hm -2,which could decrease the continuouscropping obstacle ofwatermelon,and increase the activity of soilenzyme,yield and quality of sandwatermelon,meanwhileaccelerate the sustainable development of sand watermelon industry inNingxia.

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李停锋,李雯,郭君钰,刘艳薇,顾欣.生物有机肥对连作压砂田土壤肥力及西瓜品质的影响[J].中国土壤与肥料,2020,(5):109-116.

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  • 收稿日期:2019-08-22
  • 最后修改日期:
  • 录用日期:2019-11-02
  • 在线发布日期: 2020-11-06