LI Mei-ning,WEI Chang-zhou,ZHU Qi-chao,et al.Study on Processing Tomato Nitrogen Fertilizer Topdressing Management Technology Based on Nmin[J].Northern Horticulture,2013,37(10):158-162.
基于土壤无机氮储量的加工番茄氮肥追施管理技术研究
- Title:
- Study on Processing Tomato Nitrogen Fertilizer Topdressing Management Technology Based on Nmin
- 文章编号:
- 1001-0009(2013)10-0158-05
- 关键词:
- 加工番茄; 土壤无机氮储量(Nmin); 氮素吸收; 氮肥利用率; 产量品质
- 分类号:
- S 641.2
- 文献标志码:
- A
- 摘要:
- 通过田间试验研究了膜下滴灌条件下传统施肥模式、基于土壤无机氮储量(Nmin)的氮素管理模式对加工番茄干物质积累、氮素吸收及产量品质的影响。结果表明:施氮可以显著促进加工番茄的生长和氮素的吸收;加工番茄干物质快速累积的时间出现在出苗后58~80 d。加工番茄对干物质分配中心与氮素吸收分配中心一致。基于土壤Nmin的氮素管理在加工番茄整个生育期施氮225 kg/hm2,与传统施肥(300 kg/hm2)相比,节氮25%,氮肥利用率提高了27.36%,但二者产量和品质差异不显著。
- Abstract:
- The accumulation of tomato dry matter,N uptake and utilization,yield and quality in different N fertilization management were studied under field experiment with drip irrigation.Fertilization methods included conventional N management strategy,N recommendation based on soil Nmin test.The results showed that N fertilizer application increased the growth of tomato and nitrogen uptake.The fastest dry matter accumulation period occurred in 58~80 d after seedling emergence.The dry matter distribution center was in accordance with N uptake.There was no significant difference in the tomato yield and quality between N management based on Nmin conventional treatment,but compared with the conventional treatment (N 300 kg/hm2),the nitrogen management based on Nmin (N 225 kg/hm2) saved 25% N application,increased 27.36% N use efficiency.
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备注/Memo
第一作者简介:李美宁(1986-),女,硕士,研究方向为农作物最佳养分管理。E-mail:meiningli@163.com.责任作者:危常州(1966-),男,博士,教授,博士生导师,研究方向为新型肥料与现代施肥技术及绿洲农业资源与高效利用。E-mail:changzhouwei@vip126.com.
基金项目:国家农业部行业公益性专项资助项目(201103003)。
收稿日期:2012-12-13