| 摘要: |
| 【目的】 探讨平衡施肥对线辣椒产量、果实品质及养分累积的影响，为线辣椒的优质生产提供理论依据。【方法】 在宝鸡凤翔连续2年（2007～2008年）进行大田试验，共设NPK、PK、NK、NP及不施肥（对照）5个处理，研究平衡施肥技术体系对线辣椒产量、品质和养分累积的影响。【结果】 平衡施肥（NPK处理）可使线辣椒产量最高达22 001 kg/hm2，纯收益18 830元/hm2；每施入1 kg N、1 kg P2O5和1 kg K2O， 线辣椒产量分别增加11，10和17 kg。与NPK处理相比，PK处理使辣椒果实硝态氮与维生素C含量分别降低2.3和223 mg/kg，差异显著；NK处理使辣椒果实维生素C含量降低51 mg/kg；NP处理使辣椒果实的硝态氮含量提高9.6 mg/kg，维生素C含量下降279 mg/kg。每形成100 kg 经济产量吸收的养分量为：N 1.87 kg，P2O5 0.42 kg，K2O 1.42 kg。NPK处理的线辣椒中N、P、K累积量均最高，分别为410，93和311 kg/hm2。【结论】 推荐当地线辣椒N、P、K施用量分别为262，155，213.6 kg/hm2，适宜的m(N)∶m(P2O5)∶m(K2O)为1∶0.59∶0.82。氮磷钾肥平衡施用才能保证线辣椒产量高、品质好、效益佳。 |
| 关键词: 线辣椒 平衡施肥 品质 产量 养分累积 |
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| 基金项目:国际植物营养研究所(IPNI)中国项目部；国家科技支撑计划项目（2006BAD05B07） |
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| Effect of balanced fertilization on yield,quality and nutrients accumulation of line pepper |
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MA Wen-juan,TONG Yan-an,GAO Yi-min,ZHANG Shu-lan and KONG Ying,MA Wen-juan,TONG Yan-an,GAO Yi-min,ZHANG Shu-lan and KONG Ying,MA Wen-juan,TONG Yan-an,GAO Yi-min,ZHANG Shu-lan and KONG Ying,MA Wen-juan,TONG Yan-an,GAO Yi-min,ZHANG Shu-lan and KONG Ying,MA Wen-juan,TONG Yan-an,GAO Yi-min,ZHANG Shu-lan and KONG Ying
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| Abstract: |
| 【Objective】 The research is to study the effect of balanced fertilization on line pepper yield,quality and nutrient accumulation in order to provide a theoretical foundation for high quality line pepper. 【Method】 A field experiment was carried out in Fengxiang from 2007-2008,and effects of different fertilizing treatments on line pepper yield,quality and nutrient accumulation were studied.The experiment included five fertilizing treatments:NPK,PK,NK,NP and CK.Each treatment was replicated three times.【Result】 The results indicated that line pepper yield could reach up to 22 001 kg/hm2 by using balanced fertilization techniques.1 kg N,P2O5,K2O could increase the line pepper yield by 11,10,and 17 kg,respectively.NO-3-N and vitamin C content of PK decreased by 2.3 and 223 mg/kg.Vitamin C content of NK was lower than NPK,decreased by 51 mg/kg.NO-3-N content of NP increased by 9.6 mg/kg,while vitamin C content decreased by 279 mg/kg.To attain 100 kg economic yield,plant should absorb nutrient:N 1.87 kg,P2O5 0.42 kg,K2O 1.42 kg.Nutrients accumulation in NPK treatment was the highest,N 410 kg/hm2,P2O5 93 kg/hm2,K2O 311 kg/hm2.【Conclusion】 The optimum ratio of m(N)∶m(P)∶m(K2O) is 1∶0.59∶0.82,and the suitable application amount of N,P2O5,K2O is 262,155,213.6 kg/hm2,respectively.Only the balanced application of N,P and K can have the best line pepper yield,quality and benefit. |
| Key words: line pepper balanced fertilization quality yield nutrient accumulation |
