• ISSN 1008-505X
  • CN 11-3996/S
戴平安, 刘崇群, 郑圣先, 樊明宪, 易国英, 聂军. 湖南省柑橘园土壤硫素及施硫效应研究[J]. 植物营养与肥料学报, 2006, 12(5): 687-693. DOI: 10.11674/zwyf.2006.0514
引用本文: 戴平安, 刘崇群, 郑圣先, 樊明宪, 易国英, 聂军. 湖南省柑橘园土壤硫素及施硫效应研究[J]. 植物营养与肥料学报, 2006, 12(5): 687-693. DOI: 10.11674/zwyf.2006.0514
DAI Ping-an, LIU Chong-qun, ZHENG Sheng-xian, FAN Ming-xian, YI Guo-ying, NIE Jun. Soil sulphur status and citrus sulphur application response[J]. Journal of Plant Nutrition and Fertilizers, 2006, 12(5): 687-693. DOI: 10.11674/zwyf.2006.0514
Citation: DAI Ping-an, LIU Chong-qun, ZHENG Sheng-xian, FAN Ming-xian, YI Guo-ying, NIE Jun. Soil sulphur status and citrus sulphur application response[J]. Journal of Plant Nutrition and Fertilizers, 2006, 12(5): 687-693. DOI: 10.11674/zwyf.2006.0514

湖南省柑橘园土壤硫素及施硫效应研究

Soil sulphur status and citrus sulphur application response

  • 摘要: 为了探明湖南省柑橘园土壤硫素含量丰缺程度和柑橘施硫效应,2000~2004年开展了柑橘园土壤硫素含量调查与田间试验研究。结果表明,湖南省柑橘园020cm土层有效硫含量平均为47.7.mg/kg,低于临界值的占9.9%、潜在缺硫的占17.3%。随着土层加深,有效硫含量逐渐增加、全硫含量依次减少。土壤有效硫的地区分布,020.cm土层,81.3%的调查县中有10.0%~75.0%的柑橘园存在缺硫和潜在缺硫。柑橘叶片全硫含量平均为2.32.g/kg,有27.2%的柑橘园低于临界值。在有效硫含量不同的土壤中,柑橘连续4~5年施硫肥平均增产5.3%~30.0%,4个基点平均增产10.7%。连续施硫肥明显提高了柑橘叶片硫和氮含量,柑橘果皮中硫含量提高、氮含量降低,有利于果实品质的改善。施硫肥的增产优质效应表现为有效硫含量缺乏的土壤潜在缺乏土壤中等和丰富土壤;较长树龄较短树龄。随着施硫肥年数延长,施硫增产优质效应更加明显。

     

    Abstract: In order to investigate the status of soil S in citrus gardens in Hunan Province and citrus in response to S application,we carried out a survey of soil S in 81 citrus gardens,and conducted field experiments in 4 citrus gardens of Taoyuan county and Zhuzhou county of Hunan Province during 20002004.Results showed that for available S content at the surface 020 cm layer of citrus gardens soils,9.9% was lower than critical level,and 17.3% was potentially deficiency(average 47.7 mg/kg).Soil available S content increased gradually with increase in soil depth,whereas total S content decreased stepwise.Regarding the available S regional distribution,there were 10.0%75.0% citrus gardens that soil available S in 020 cm soil layer was deficient or potentially deficient in 81.3% of all the investigated counties.The citrus garden in which total S content of citrus leaves was lower than critical value accounted for 27.2%(average 2.32 g/kg).Field experiments results showed that citrus yields increased by 5.3%30.0% after continuous S fertilization for 45 years.Continuous S fertilization evidently enhanced S and N content in citrus leaves and S content in citrus fruit skin,reduced N content in citrus fruit skin,consequently improved quality of fruit.The order of yield and quality response to S fertilization was as follows: Available S deficient soilavailable S latent deficient soilavailable S medium and sufficient soil,and older tree-agesyounger tree-ages.With the years of S fertilizer application extending,the yield and quality response of S fertilization became more distinctively.

     

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