英文语法错误纠正：The result of the 6-year field trial...

这句话有一个语法错误。应该是 'The result of the 6-year field trial shows that the average yield is in the order of Con treatment (8.5 Mg ha-1) ≥ Opt treatment (8.3 Mg ha-1) > Min treatment (6.6 Mg ha-1) (Fig. 1).', 其中 'show' 要用单数形式。