有机肥与化肥配施对菠萝蜜幼苗光合及养分吸收的影响
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(中国热带农业科学院香料饮料研究所,海南 万宁 571533)

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苏兰茜(1988-),女,湖南省邵东人,助理研究员,博士,研究方向为土壤与植物营养。E-mail:sulanxi1988@163.com。

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基金项目:海南省自然科学基金青年基金(319QN314);国家自然科学基金项目(41907092);中国热带农业科学院基本科研业务费专项资金(编号:1630142020008)。


Effects of combined application of organic fertilizer and chemical fertilizer on photosynthesis and nutrient uptake of jackfruit seedlings
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(Spice and Beverage ResearchInstitute,Chinese Academyof Tropical AgriculturalSciences,Wanning Hainan571533)

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    摘要:

    为探究有机肥与化肥配施对菠萝蜜幼苗光合及养分吸收的影响,以马来西亚 1号菠萝蜜嫁接苗为试验材料,共设CK(不施肥)、100CF(100%化肥)、30OM(30%有机肥 +70%化肥)、50OM(50%有机.肥 +50%化肥)、70OM(70%有机肥 +30%化肥)、100OM(100%有机肥)6个处理,比较不同施肥方式下菠萝蜜幼苗光合及养分吸收累积差异。结果表明:随着有机肥施用比例的增加,净光合速率、气孔导度、胞间 CO 2浓度、蒸腾速率呈先增加后降低的趋势,气孔限制值变化趋势相反,其中 70OM处理的净光合速率、气孔导度、胞间 CO 2浓度、蒸腾速率最高,气孔限制值最低。与不施肥和施纯化肥相比,增施有机肥整体上促进了菠萝蜜幼苗生物量积累及氮磷钾养分的吸收积累,其中叶片氮磷钾含量在 30OM处理时达到最大值,随着有机肥施用比例的增加出现下降趋势。氮磷钾养分累积量与菠萝蜜幼苗生物量积累呈显著正相关。有机 -无机配施能够促进养分的吸收利用,增强光合作用,从而促进菠萝蜜生长。

    Abstract:

    In order to explore the effects of combined application of organic fertilizer and chemical fertilizer on photosynthesisand nutrient absorption of jackfruit seedlings,Malaysian No.1 grafted seedlings was used as test materials.Six treatmentswere installed, i. e.,CK(no fertilization),100CF(100% chemical fertilization),30OM(30% organic fertilizerplus 70% chemical fertilization),50OM(50% organic fertilizer plus 50% chemical fertilization),70OM(70% organicfertilizer plus 30% chemicalfertilization),100OM(100% organicfertilizer).The effects of different fertilization methodson photosynthesis and nutrient absorption and accumulation of jackfruit seedlings were compared.The results showedthat,with the increase of organicfertilizer,the parameters include net photosyntheticrate(Pn),stomatal conductance(Gs),intercellular carbon dioxideconcentration(Ci)and transpirationrate(Tr)of jackfruit increased at first and thendecreased,while the stomatalinhibition(Ls)changed on thecontrary.Among them,the values of Pn,Gs,Ci and Trin 70OM treatment were the highest,while the value of Ls was the lowest.Compared with no fertilizer and pure chemicalfertilizer,the application of organic fertilizer promoted the biomass accumulation and nitrogen,phosphorus and potassiumabsorption and accumulation of jackfruit seedlings as awhole.The content ofN,P and K in leaves reached the maximumunder 30OMtreatment,and decreased with the increase of the proportion of organic fertilizerapplication.The accumulationofnitrogen,phosphorus and potassium was positively correlated with the biomass accumulation of jackfruit seedlings. Organic-inorganic application can promote the absorption and utilization of nutrients and enhance photosynthesis,so as topromote the growth of jackfruitseedlings.

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苏兰茜,白亭玉,鱼欢,吴刚,谭乐和.有机肥与化肥配施对菠萝蜜幼苗光合及养分吸收的影响[J].中国土壤与肥料,2020,(5):117-123.

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  • 收稿日期:2019-08-26
  • 最后修改日期:
  • 录用日期:2019-12-16
  • 在线发布日期: 2020-11-06