growing period短语¹³¹⁶²⁰⁺³ 基本例句 生长期 In the bud stage and boll stage, the six pesticides on proline content in a range of small seedling, with the cotton growing period that the extension of the sensitivity of reducing pesticide. 在蕾、铃期，六种农药对脯氨酸含量的变化幅度较苗期小，表明棉花随着生育进程对农药的敏感性降低。 fabiao