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以易空心的Ｔ８４－６６和不易空心的Ｔ８４－６１两个榨菜品种为材料进行试验。结果表明，从产量和瘤状茎品质方面看，４月３日至４月８日为适宜采收期；在瘤状茎开始膨大到充分膨大期间，叶片内Ｎ、Ｐ、Ｋ含量基本呈下降趋势，且低于瘤状茎内的含量。Ｎ含量较高则瘤状茎的空心率较低，而Ｐ和Ｋ含量与瘤状茎空心率的关系不明显，瘤状茎空心发生后，ＩＡＡ水平呈上升趋势，而ＺＴ及ＡＢＡ含量变化不大；ＩＡＡ含量与空心率存在显著的正相关。随着植株的抽薹，瘤状茎内的ＣＡ３含量迅速上升。
Eucalyptus T84-66 and not easy hollow T84-61 two mustard varieties for the test material. The results showed that from the aspects of yield and the quality of the tuberous stems, the harvest time was from April 3 to April 8, and the contents of N, P and K in the leaves basically decreased when the tuberous stems began to enlarge and fully expanded Trend, and lower than the content of tumorous stems. The higher the content of N was, the lower the hollowness of the tuberous stems was, while the content of P and K was not significantly related to the hollowness of the tuberous stems. The content of IAA increased when the tuberous stem hollowed out, while the content of ZT and ABA did not change There was a significant positive correlation between IAA content and hollowness. With the bolting of plants, the content of CA3 in tuberous stems increased rapidly.