| 多效唑在植物卷材中的动态及其对紫穗槐生长的影响 |
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| 引用本文： | 江山,李绍才,孙海龙.多效唑在植物卷材中的动态及其对紫穗槐生长的影响[J].草业科学,2017,34(6). |
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| 作者姓名： | 江山 李绍才 孙海龙 |
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| 作者单位： | 四川大学生命科学学院,四川 成都,610064;四川大学生命科学学院,四川 成都 610064;四川沃尔宜环保科技有限公司,四川 成都 610064;四川沃尔宜环保科技有限公司,四川 成都 610064;四川大学水利水电国家重点实验室,四川 成都 610064 |
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| 摘 要： | 多效唑能调控植物的形态和生理特征以适应于边坡贫瘠的土壤环境进行植被恢复。通过模拟试验,探讨多效唑在卷材-植物系统中的变化规律及其对植物的作用,为多效唑在边坡植被修复工程中的应用提供参考。以植物卷材为研究对象,通过测定卷材中的多效唑含量和紫穗槐(Amorpha fruticosa)的形态指标,探究多效唑含量在卷材中的动态变化规律及其对紫穗槐生长的影响。结果表明,1)多效唑在盆栽中的半衰期在15~60 d,在施加多效唑1年后卷材中多效唑的消减率在99%以上。卷材中多效唑的径流损失量很少,试验期间的流失量仅为施加量的1.81%,且损失量与降水量和降水时间呈负相关关系;2)施加多效唑1年后,卷材基质的多效唑消减率达到98%,基质多效唑残留量表现为渣场沙场屋面。3个场地紫穗槐多效唑含量占基质多效唑含量的百分比分别为3.39%~14.24%、4.90%~18.29%、6.14%~13.64%;3)经20、40、60、80、100 mg·L~(-1)浓度的多效唑处理1个月后,相比未施加多效唑的对照组紫穗槐株高抑制率为0.54%~14.66%,基径增长率为8.67%~26.02%。处理1年后株高抑制率为15.09%~44.25%,基径无显著差异(P0.05)。对3类边坡紫穗槐的形态指标进行分析可知,紫穗槐生长不仅受多效唑调控,还受边坡条件影响。
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| 关 键 词： | 植物卷材 多效唑 残留量 径流 紫穗槐 边坡 植被恢复 |
Dynamics of paclobutrazol in plant coil and its effect on the growth of Amorpha fruticosa |
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| Jiang Shan,Li Shao-cai,Sun Hai-long.Dynamics of paclobutrazol in plant coil and its effect on the growth of Amorpha fruticosa[J].Pratacultural Science,2017,34(6). |
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| Authors: | Jiang Shan Li Shao-cai Sun Hai-long |
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| Abstract: | Paclobutrazol(PP333) can control the morphological and physiological characteristics of plants, and make them adapt to the sterile soil conditions of slopes.Therefore, it can be used for vegetation restoration.The dynamic variation rule of PP333 in the coil-plant system and its effects on plants were studied by model tests, which provide a reference for the application of PP333 in the vegetation restoration project.PP333 content in the vegetation coil and Amorpha fruticosa morphological index was determined to explore the dynamic changes of PP333 in vegetation coil and its effect on A.fruticosa growth.The results showed that: 1) the half-life of PP333 in different concentrations was between 15 and 60 days, and the elimination rate of PP333 in the coil was above 99% after one year.The runoff loss of PP333 in the coil was very small, and the loss during the experiment was only 1.81%, and the loss was negatively correlated with rainfall and rainfall time.2)The rate of reduction of PP333 was 98% after one year, and the residue of PP333 was slag> sand> roof.The ratio of A.fruticosa PP333 to matrix PP333 in the three sites were 3.39%~14.24%, 4.90%~18.29%, and 6.14%~13.64%, respectively.3) After one month of treatment with 20, 40, 60, 80, and 100 mg·L-1 PP333, the inhibition rate of the A.fruticosa height was 0.54%~14.66% and the rate of stem diameter increase was 8.67%~26.02%.The inhibition rate of A.fruticosa height was 15.09%~44.25% after one year, and there was no significant difference in stem diameter.The analysis of the morphological indices of A.fruticosa on the three types slope revealed that A.fruticosa growth was controlled by PP333and slope conditions. |
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| Keywords: | vegetation coil paclobutrazol residue runoff Amorpha fruticosa slope vegetation restoration |
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