不同基质对香港四照花幼苗生长及光合特性的影响
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摘要
以香港四照花为试验材料,研究比较了6种不同栽培基质对其幼苗生长特性和光合特性的影响。结果表明,M6(即黄土∶沙土∶泥炭土的比例为1∶1∶1)混合基质最适合香港四照花生长。M6基质处理的植株地径、株高、冠幅3项生长指标均显著高于其他基质(P <0.05),该混合基质促进了香港四照花对养分的吸收利用和植株的生长发育,捕获光的能力得到增强,净光合速率(Pn)、水分利用效率(WUE)和气体交换等相关参数亦均优于其他基质;而单一基质M5 (珍珠岩)处理的植株生长发育和光合特性的相关指标最差,不利于幼苗的生长发育;其他单一或混合基质对植株生长的影响介于二者之间。认为黄土∶沙土∶泥炭土的比例为1∶1∶1的混合基质可作为香港四照花栽培基质推广。
The effects of six different substrates on the growth and photosynthetic characteristics of D.hongkongensis were studied.The results showed that the M6 mixed substrate(loess :sandy soil :peat soil in 1∶1∶1) created better conditions for the growth of D.hongkongensis.The growth indexes of diameter,height and crown with the M6 mixed substrates were all significant(P<0.05).In addition,the mixed substrate promoted the absorption and utilization of nutrients by D.hongkongensis and enhanced the ability to capture light.The parameters of net photosynthetic rate,water use efficiency and gas exchange were better than other five substrates.The parameters of growth and photosynthetic characteristics with the single substrate M5(perlite-based) were the worst and not conducive to the seeding growth.Effects of other single or mixed substrates on plant growth were in between.The M6 mixed substrate of loess:sandy soil :peat soil in 1∶1∶1 was considered as the popularized one to cultivate D.hongkongensis.
The effects of six different substrates on the growth and photosynthetic characteristics of D.hongkongensis were studied.The results showed that the M6 mixed substrate(loess :sandy soil :peat soil in 1∶1∶1) created better conditions for the growth of D.hongkongensis.The growth indexes of diameter,height and crown with the M6 mixed substrates were all significant(P<0.05).In addition,the mixed substrate promoted the absorption and utilization of nutrients by D.hongkongensis and enhanced the ability to capture light.The parameters of net photosynthetic rate,water use efficiency and gas exchange were better than other five substrates.The parameters of growth and photosynthetic characteristics with the single substrate M5(perlite-based) were the worst and not conducive to the seeding growth.Effects of other single or mixed substrates on plant growth were in between.The M6 mixed substrate of loess:sandy soil :peat soil in 1∶1∶1 was considered as the popularized one to cultivate D.hongkongensis.
引文
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[2]陈甜甜,夏宜平.容器育苗中基质、养分及添加剂研究进展[J].陕西林业科技,2007(1):20-25.
[3]杜国栋,郭修武,武建,等.不同基质通透性对草莓生长及光合特性的影响[J].北方园艺,2007(6):39-41.
[4]王满莲,韦霄,蒋运生,等.不同土壤环境对黄花蒿生长和青蒿素含量的影响研究[J].植物研究,2010,30(4):424-427.
[5]陈际伸,王秋波.香港四照花的繁育技术及园林价值[J].宁波职业技术学院学报,2005,9(2):85-86.
[6]张颖.不同基质配比对容器大叶女贞苗生长与生理指标影响的研究[D].郑州:河南农业大学,2011.
[7]连书钗.香港四照花育苗技术研究[D].北京:中国林业科学院,2014.
[8]吴方星,瞿彦长,刘开帮,等.香港四照花的利用及育苗造林技术[J].安徽农学通报,2009,15(7):217-223.
[9]徐飞,郭卫华,徐伟红,等.不同光环境对麻栎和刺槐幼苗生长和光合特征的影响[J].生态学报,2010,30(12):3098-3107.
[10]吴伟华,钟亚萍,吴高流,等.优良乡土绿化苗木秀丽香港四照花特征特性及育苗技术[J].现代农业科技,2011(19):251-251.
[11]COWN D J,MCCONCHIE D L,YOUNG G D.Wood properties of Pinus caribaea var.hondurensis grown in Fiji[J].New Zealand Journal of Forestry Science,1981,11(3):244-253.
[12]王满莲,韦霄,唐辉,等.光强对三种喀斯特植物幼苗生长和光合特性的影响[J].生态学杂志,2015,34(3):604-610.
[13]蔡建国,韦孟琪,章毅,等.遮阴对绣球光合特性和叶绿素荧光参数的影响[J].植物生态学报,2017,41(5):570-576.
[14]聂书明,杜中平,徐海勤.不同基质配方对番茄生育期植株生长特性和光合特性的影响[J].西南农业学报,2013,26(4):1424-1427.
[15]刘术新,丁枫华,朱伟清.不同基质对小叶赤楠生长的影响[J].河南农业科学,2013,42(3):112-114.