Compared with CF, nitrogen accumulation in EF treated roots increased significantly, while nitrogen accumulation in leaves decreased significantly ( P 0.05). glyptostroboides was as follows: root > stem > leaf, the proportion of N accumulation in root, stem and leaf ranged from 37.7% to 49.1%, 24.6% to 28.0%, and 24.5% to 35.0%, respectively ( Fig. The order of N distribution rate in each organ of the seedling of the M. glyptostroboides with Different Fertilization The total nitrogen accumulation of plants was the highest by EF3 treatment, reaching 2938.9 mg cutting −1.ģ.4 Nitrogen Distribution of M. Compared with CF, the accumulation of nitrogen in EF treatment significantly increased by 49.2%–84.4% ( P 0.05). Compared with CF, the nitrogen mass fraction of EF reduced by 3.0% to 9.7%, but the difference was not significant ( P > 0.05).Įxponential fertilization significantly increased the accumulation of nitrogen in the roots of M. The N mass fraction of the leaves ranged from 29.2 to 32.3 g kg −1. glyptostroboides seedlings roots ranged from 28.7 to 32.3 g kg −1 ( Table 3), and EF1 was significantly higher than that of CF and EF4 ( P 0.05). glyptostroboidesunder Different Fertilization Treatments ![]() Compared with the CF, EF treatments significantly increased the root biomass, total biomass and root-to shoot ratio by 45.1%–78.0%, 20.4%–22.5% and 22.4%–46.9% ( P 0.05).ģ.3 Nitrogen Contents and Nitrogen Accumulation of M. In Table 2, EF treatments promoted the roots and stems biomass accumulation of M. glyptostroboides Seedlings under Different Fertilization Treatments glyptostroboides’s biomass in different organs ( P 0.05).įigure 1: The external properties of seedlings with different treatmentsģ.2 The Biomass of M. The results indicated that non-significant differences in seedlings’ height and ground diameter were found among the above treatments ( P > 0.05) At the same time, N-exponential fertilization promoted the M. The relevant growth indexes were measured after 210-day growth. ![]() Different N fertilizer levels with conventional fertilization (CF: 5.0 g seedling −1), exponential fertilization including EF1, EF2, EF3 and EF4 were determined. glyptostroboides rooted seedlings with 12-month growth were chosen. ![]() In this study, a pot experiment in a greenhouse environment was carried out to identify the effect of N-exponential fertilization on the growth and nutrient distribution of M. However, due to the nutrients-supply deficiency, it is a big challenge to cultivate the high-quality seedlings of M. It plays a positive role in afforestation and its long-term protection with high paleoclimate research value. glyptostroboides) is a unique plant species related to relic flora in China. Abstract: Metasequoia glyptostroboides ( M.
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