关键词: 高油玉米, 磷营养, 吸磷特性, 品质, 产量

Abstract: A field trial was carried out to investigate phosphorous (P) absorption, quality and yield between high oil maize and common maize. The results indicated that Tongyou 1 had the lower highest P absorption rate (HAR) and later occurring date of HAR, as compared with Simi25. The highest HAR and the earliest occurring date of HAR was obtained by the treatments of P45 and P75 in Tongyou1 and Simi25, respectively. The total amount of P accumulated by maize plant was gained by P105 treatment in both varieties. P in grain was mainly from P absorption by roots. P in grain of Tongyou1 was largely from P absorption by roots, while that of Simi25 was largely from P translocation from vegetative part. High oil corn, Tongyou1, contained more oil and protein contents, but less starch content and lower grain yield. Appropriate rate of P application enhanced the contents of protein and fatty acid, but the increment of starch content was neglectable.

Key words: High oil corn, Phosphorous application, Phosphorous absorption, Quality, Yield