Effects of Top-cutting and Fertilization on Output and Quality of Cuttings in Liriodendron sino-americanum Cutting Orchard
To investigate the influence of top-cutting and fertilization measures on the yield and quality of cuttings a Liriodendron si-no-americanum cutting orchard,and to identify operational strategies suitable for widespread application in production,experiments were conducted in 2022 at the Wuyi State-owned Forest Farm in Zhangping,Fujian Province.The experimental design included dif-ferent top-cutting and fertilization treatments(top-cutting+fertilization,no top-cutting+fertilization,top-cutting+no fertiliza-tion,no top-cutting+no fertilization).The results revealed significant differences in the growth,cutting yield,and quality of the ma-ternal plant among the various top-cutting and fertilization treatments.Notably,the top-cutting+fertilization treatment exhibited the most favorable outcomes.The ground diameter growth and effective cutting quantity of maternal plants in this treatment increased by 23.08％and 70.83％,respectively,compared to the no top-cutting+fertilization treatment,18.52％and 74.47％compared to the top-cutting+no fertilization treatment,88.24％and 110.26％compared to the no top-cutting+no fertilization treatment.The total cutting quantity increased by 56.06％and 53.73％,respectively,compared to no top-cutting+fertilization and no top-cutting+no fertilization.The rate of effective cuttings,along with effective cutting branch length and diameter,demonstrated substantial enhance-ments of 72.80％/36.76％and 80.77％/46.88％,100％/60.00％,respectively when contrasted with the top-cutting or no top-cut-ting+fertilization treatment.Significant or highly significant positive correlations were observed between the ground diameter and cuttings yield and quality indicators of maternal plant.Conversely,there was no significant correlation between number of cuttings and quality of cuttings in the top-cutting treatment alone,while a highly significant positive correlation emerged between the total quantity and quality indicators in the top-cutting+fertilization treatment.The comprehensive results indicate that the singular adoption of top-cutting or fertilization inadequately addresses both maternal plants cutting yield and quality,and the top-cutting+fertilization treatment can be used as a viable operational measure in the management of Liriodendron sino-americanum cutting orchards.
万方数据
维普
