Effects of Intensive Nitrogen Fertilization During Stem Elongation by Controlled-release Fertilizers on Yield and Grain Protein Content of Wheat for Bread

日本作物學會紀事

article

水田 圭祐¹  荒木 英樹²  中村 和弘³  松中 仁³  高橋 肇² 

[1] 鳥取大学大学院連合農学研究科;山口大学大学院創成科学研究科;農研機構九州沖縄農業研究センター

关键词: Controlled-release fertilizer;    Grain protein content;    High yield;    Intensive nitrogen fertilization during stem elongation (INFDSE);    Wheat for bread.;   

DOI  :  10.1626/jcs.90.18

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

A fertilizing system that reproduces “intensive nitrogen fertilization during stem elongation (INFDSE)” with controlled-release fertilizers (CRF) would be useful for wheat production aiming at high yield and quality, and low labor cost. In trials at Kumamoto prefecture, one-shot fertilizing with crotonylidenediurea (CDU), isobutylidenediurea (IBDU) and coated urea produced a yield similar to that obtained with INFDSE. One-shot basal fertilizing with IBDU and CDU at the 4th leaf stage in 2016/17 (sown in winter of 2016 and harvested in spring of 2017) produced a lower grain protein content than INFDSE although other treatments using CRF produced a similar grain protein content. In one-shot top-dressing with urea and CDU at the stem elongation stage (U+CDU SE ) and basal coated urea at basal (LP30), the aboveground nitrogen accumulation at maturity was as high as that obtained with INFDSE. In trials at Yamaguchi prefecture, yield and aboveground nitrogen accumulation at maturity in the U+CDU SE were similar to the values obtained with INFDSE in 2017/18. In the trials at Kumamoto, lodging degree after anthesis was high in the LP30, although no lodging was observed in one-shot top-dressing with CDU at the stem elongation stage due to shorter stem and internodes. One-shot application such as U+CDU SE may be as productive as INFDSE while lowering labor cost.

【 授权许可】

Unknown