论文部分内容阅读
试验表明，白鹃梅种子有浅休眠特性，如在室温１５～１９℃混湿沙层积１５ｄ即可解除休眠，发芽率达９７％，活力指数达１１６１０；若用０２％ＫＮＯ３预处理，不仅能代替室温层积，而且优于室温层积，发芽率达９８％，活力指数达１４３０９２。火炬树种子具有深休眠特性，用浓Ｈ２ＳＯ４酸蚀４５ｈ，２ｄ初次计数，３ｄ发芽率达８３％，活力指数达２２０５１４；若不做预处理，即使是混湿沙冷层积在５℃或暖层积在１８～２５℃，２１８ｄ也不能解除其休眠。
The results showed that the seeds of Brassica alba have shallow dormancy characteristics, such as dormancy dormancy 15 days at 15-19 ℃ room temperature, germination rate 97%, vitality index 11610; with 02% KNO3 pretreatment , Can not only replace the stratification at room temperature, but also better than room temperature stratification, germination rate of 98%, vitality index of 143092. Rhus typhina seeds have a deep dormancy characteristics, acid etching with concentrated H2SO4 4 5h, 2d initial counting, 3d germination rate of 83%, vitality index of 220 514; without pretreatment, 5 ℃ or warm layer at 18 ~ 25 ℃, 218d can not lift its dormancy.