It was also found that the stability difference of addition lines were very great.The stability of Al,A2,A3,A4,A5 and A6 addition line was 16.67%,82.61%,28.00%,92.86%,80.00%,and 66.67% respectively.

• 本试验还发现各附加系间稳定性差异很大；A1、A2、A3、A4、A5和A6附加系的稳定分别为16.；7%25、82