There were differences in Chl between the two varieties, 8901-11 and 4185. TheChl in the two varieties were all increased by zinc fertilization, and the Chl highest in top function leaves and in flag leaf occurred at the Zn level of 11.25 kg hm-2.

• 8901-11和4185两个品种间叶绿素含量达最高值的时间和含量存在差异。 施锌后两个品种的叶片叶绿素含量均增加，上部功能叶和旗叶叶绿素含量基本以施锌11.；25 kg hm~(-2)的最高。