カバークロップとして投入したヘアリーベッチ由来窒素のトマトによる吸収と分配

• 杉原 雄一

  北海道大学環境科学院

• 上野 秀人

  愛媛大学農学部

• 平田 聡之

  北海道大学北方生物圏フィールド科学センター

• 荒木 肇

  北海道大学北方生物圏フィールド科学センター

書誌事項

タイトル別名

• Uptake and Distribution of Nitrogen Derived from Hairy Vetch Used as a Cover Crop by Tomato Plant

抄録

One of the ways to reduce chemical fertilizer application is the use of cover crops, which improve soil properties and supply nutrition to subsequent crops. The application effect of a legume cover crop, hairy vetch (Vicia villosa R., HV), on N dynamics in fresh market tomatoes (Solanum lycopersicum L.), ‘House Momotaro,’ was investigated using the ¹⁵N-labeling method. Tomato seedlings were transplanted into a 1/2000 a Wagner pot at 0, 80, and 240 kg·ha⁻¹ of N application (N0HV, N80HV, and N240HV) on June 9, 2011. Before transplanting, the labeled HV and chemical fertilizers were incorporated into the soil. Five tomato plants were collected 6 times in each treatment and then separated into leaves, stems, and roots. Fruits were harvested at maturity. HV-derived N uptake was recognized mainly in the first 4 weeks after transplant (WAT). Especially in N240HV, HV-derived N uptake ceased at 4 WAT. The uptake amounts of HV-derived N at 10 WAT were 587, 657, and 729 mg·plant⁻¹ in N240HV, N80HV, and N0HV, respectively, and were increased by decreasing N fertilizer application. The rate of N uptake derived from HV to total N uptake in tomato plants (%N_dfhv) was the highest at 2 WAT, and %N_dfhv in N80HV (52.1%) and N0HV (51.5%) were significantly higher than in N240HV (43.6%). After 2 WAT, %N_dfhv decreased gradually in all N rates as tomatoes grew and decreased to 24.8%, 34.4%, and 37.1% in N240HV, N80HV, and N0HV, respectively, until 12 WAT. Nitrogen use efficiency (NUE) from HV-derived N was the highest at 10 WAT, and N0HV (55.3%) was significantly higher than N240HV (44.5%) and N80HV (49.8%). The partition rate of HV-derived N into fruits was 63.9%, and 39.7% of HV-derived N was distributed into 1st and 2nd fruit clusters. From these results, it was clarified that HV can be expected to be an alternative N fertilizer because HV-derived N was absorbed effectively with a small amount of N fertilizer. Further research on fertilizer management in tomato’s early stage will be needed for an N-reduction system because HV-derived N was mainly absorbed for 4 WAT.<br>

収録刊行物

• Journal of the Japanese Society for Horticultural Science

  Journal of the Japanese Society for Horticultural Science 82 (1), 30-38, 2013

  一般社団法人　園芸学会

キーワード

• hairy vetch
• N fertilizer
• ¹⁵N
• N uptake
• tomato

詳細情報

• CRID: 1390001205290771968
• NII論文ID: 130004510763
• NII論文ID: 40019554334
• NII書誌ID: AA12177046
• DOI: 10.2503/jjshs1.82.30
• ISSN: 1882336X
• ISSN: 18823351
• NDL書誌ID: 024212493
• Web Site: http://id.ndl.go.jp/bib/024212493
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024212493
• Web Site: https://www.jstage.jst.go.jp/article/jjshs1/82/1/82_30/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可