Effects of plant growth regulator “Shifengle” on transpiring water-consumption of Rhus chinensis and Rhus typhina
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摘要: 采用BP3400精密天平等仪器对喷施不同浓度 (10、20、40 mg/L) “施丰乐”溶液 (对照喷施清水) 的当年生盐肤木和火炬树的实际蒸腾耗水状况进行研究, 得出不同处理苗木在正常水分条件下及干旱胁迫过程中的日蒸腾耗水规律.结果表明:在正常水分和轻度干旱胁迫时期, 各处理苗木耗水量和耗水速率日变化规律呈明显的“单峰型”, 峰值出现在12:00—14:00之间;进入中度和严重干旱胁迫时期, 各处理苗木的耗水量和耗水速率的日变化幅度十分平缓.“施丰乐”对两种苗木的作用效果不一致, 对盐肤木, 40 mg/L处理的作用较大, 对火炬树则是20 mg/L处理的作用较为明显.通过研究不同处理苗木在不同水势梯度下的耗水特性和蒸腾耗水量, 得出植物生长调节剂“施丰乐”的喷施对减少苗木耗水, 延缓苗木干旱起着重要的作用, 从而为水量缺乏情况下进行林木培育和植被恢复重建提供新的有效途径.Abstract: Factual water consumption status of Rhus chinensis M.and Rhus typhina L., which were sprayed with different concentrations of plant growth regulator "Shifengle" solution including 10, 20 and 40 mg/L (water is the control), was studied by using BP3400 Precision Balance etc.The daily water-consumption patterns of seedlings with different treatments were observed under normal water-supply and drought stress conditions.The results showed that the daily variations in quantity and the rates of water consumption of seedlings with various treatments were clearly when they were in normal water condition and light drought, and the highest daily quantity and rate of water consumption of seedlings ware occurred at 12:00-14:00.But when they were in moderate and severe drought, the daily variations became unclearly.The effects of "Shifengle" were various on two seedlings, 40 mg/L was better to R.chinensis and 20 mg/L had grater use to R.typhina.It is suggested that the present focusing on water consumption characteristics and consumption values of seedlings with various treatments in different water potential would reach the conclusion that "Shifengle" contributes to the diminishing of water consumption and the detainment of seedling drought.Therefore, it is beneficial to the afforestation and vegetation reconstruction under the conditions of water deficiency.
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Keywords:
- “Shifengle” /
- Rhus chinensis M. /
- Rhus typhina L. /
- water potential /
- water consumption /
- water consumption rate
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期刊类型引用(1)
1. 许曈，邵灵梅，王小斌，张润龙，张凯靖，夏宜平，张佳平，李丹青. 多年生单子叶植物的越冬休眠研究进展. 园艺学报. 2022(12): 2703-2721 . 
百度学术
其他类型引用(3)
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