DUN Hui-ning,WU Jian-xin,ZUO Qiang,et al.Effect of Different Fertilizer Application Countermeasures on Yield，Quality of Romanesco Broccoli and Nitrogen Balance[J].Northern Horticulture,2012,36(15):153-157.
不同施肥措施对罗马花椰菜产量、品质及氮平衡的影响
- Title:
- Effect of Different Fertilizer Application Countermeasures on Yield，Quality of Romanesco Broccoli and Nitrogen Balance
- 文章编号:
- 1001-0009(2012)15-0153-05
- Keywords:
- Romanesco Broccoli; control-released fertilizer; yield; nitrate; N balance
- 分类号:
- S 635.306+.2
- 文献标志码:
- A
- 摘要:
- 在京郊保护地菜田条件下，研究了常规施肥（CON）、优化+填闲+调C/N（OCC）、施用控释肥（CRF1，CRF2）等施肥措施对罗马花椰菜产量、品质和土壤无机氮残留的影响，并对土壤-作物体系氮素平衡进行了分析。结果表明：不同施肥措施使罗马花椰菜增产14.75%～21.54%，吸氮量增加12.65%～15.51%。施肥处理间罗马花椰菜可食部分硝酸盐含量由高到低依次为：常规施肥>优化+填闲+调C/N>控释肥1>控释肥2。收获后，0～200 cm土体无机氮浓度变化为：常规施肥>控释肥1>控释肥2>优化+填闲+调C/N。与常规施肥相比，优化+填闲+调C/N和施用控释肥处理降低了土壤中无机氮的累积，分别减少土壤-作物体系的氮素盈余45.17%、21.40%和31.73%。减量施氮、种植填闲作物、施用秸秆及施用缓控释肥等是提高氮素利用率，减少氮素损失的有效措施。
- Abstract:
- Field experiment was conducted in greenhouse in the suburb of Beijing to determine the effect of different fertilizer application countermeasures (conventional fertilization，optimized fertilization with catch crop and C/N ratio，control-released fertilizer) on yield and quality of Romanesco Broccoli，and the soil nitrate content and apparent N balance of Soil-Romanesco Broccoli system were analyzed.The results showed that different fertilizer application countermeasures increased yield by 14.75%～21.54%，and N uptake by 12.65%～15.51%.The nitrate content of Romanesco Broccoli edible department between different fertilizer processing were followed by CON>OCC>CRF1>CRF2.After Romanesco Broccoli harvested，Nmin contents in the soil profile (0~200 cm) were：CON>CRF1>CRF2>OCC>CK.Contract with CON，optimized fertilization with catch crop and C/N ratio and applying control-released fertilizer decreased Nmin accumulation and reduced N surplus of soil-plant system by 45.17%，21.40% and 31.73%，respectively.Some effective methods，such as reducing nitrogen rate，nitrogen-catch crop，C/N ratio and control-released fertilizer application，were put forward to reduce nitrogen leaching and improve use efficiency.
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备注/Memo
第一作者简介：敦惠宁(1985-)，女，河北石家庄人， 硕士，现主要从事农业面源污染方面的研究工作。E-mail：dun050071@163.com.