| 摘要: |
| 采用田间试验方法研究了在日光温室栽培条件下，不同水肥调控对番茄产繁与品质及土壤养分含量的影响。结果表明，与当地农民的常规施肥处理相比，采用调整N，P，K比例并减少其用量的配方施肥处理可保持番茄产量，而且可增加番茄果实可溶性糖含量．降低硝念氮和有机酸含量，改善果实品质；同时也显著降低了硝态氮、有效磷和速效钾在土壤中的过量累积，降低了土壤盐分累积。与常规灌溉处理相比，在施肥量相同的条件下，节水灌溉处理对番茄产量与品质及土壤养分累积等指标均未产生不良影响。说明在当前日光温室栽培条件下，采取节水节肥措施具有很大潜力。 |
| 关键词: 日光温室 番茄 水肥调控 产量和品质 养分累积 |
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| 基金项目:科技部“十五”科技攻关项目（2004BA516A09）；西安市农业科技攻关项目（GG04094）；西北农林科技大学科研专项（04ZM097) |
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| Effect of different fertilizer and water managements on the yield and quality of tomatoes and nutrient accumulations in soil cultivated in sunlight greenhouse |
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| Abstract: |
| A field experiment was carried out to study the effect of different water and fertilizer managements on yield and quality of tomatoes and nutrient accumulations in soil cultivated in sunlight greenhouse in Yangling,Shaanxi Province.Compared with the practical methods of using fertilizer and water by farmers in the region,the prescription fertilization treatment decreased the amounts of fertilizers added,and did not induce the reduction of the tomato yield;furthermore,the quality of tomato fruit was improved.And it also reduced the accumulation of nitrate and available P and K in the soil,and reduced the electric conductivity in the soil.When the application of fertilizer was similar,water saving irrigation did not have negative effect on the yield and quality of the tomato relative to the practical irrigation method used by farmers.It is concluded that there is a great potential in the practice of sunlight greenhouse in reducing the application of water and fertilizers in the research region. |
| Key words: sunlight greenhouse tomato water and fertilizer yield and quality nutrient accumulation |
