石竹出笋退笋规律研究

对石竹出笋退笋规律的研究表明 ,石竹出笋时间始于 5月 1日左右 ,历时约 36d ,出笋初期出笋少 (持续时间 12d左右 ,占 11 1% ) ,盛期出笋数较多 (持续时间 18d ,占 83 9% ) ,末期出笋数迅速下降 (持续时间 6d ,出笋占 5 0 % ) ,初期出土石竹笋退笋少 ,以后退笋率不断增加 ,但末期退笋率又有所下降。随着笋期的推移 ,退笋高度不断增加 ,退笋生长时间缩短。

Study on the Law of Shoot Emergence and Degradation of Phyllostachys nuda

The study results show that the shoot emergence of Phyllostachys nuda begins on May 1 or so and lasts about 36 days;few shoots emerge at the preliminary stage of shooting,this situation lasts about 12 days and the shooting quantity accounts for 11 1% of the total shooting quantity;more shoots emerge at the prosperous stage of shooting,this situation lasts about 18 days and the shooting quantity accounts for 83.9%;much fewer shoots emerge at the last stage of shooting,this situation lasts about 6 days and the shooting quantity accounts for 5.0%;and the degraded shoot quantity is small at the preliminary stage,the degraded shoot percentage increases later and it declines a bit at the last stage.