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Influence of nutrient solution concentration on growth and tissue mineral content of Panax ginseng seedlings cultured in a root medium containing peat and perlite
Horticulture, Environment, and Biotechnology ( IF 2.4 ) Pub Date : 2020-06-19 , DOI: 10.1007/s13580-020-00262-6
Hyung Bum Park , Sang Yong Park , In Sook Park , In Bae Jang , Dong Yun Hyun , Chiwon W. Lee , Jong Myung Choi

There is an increasing trend of producing seedlings of Panax ginseng in amended root media in raised beds. Precise control of the fertility of root media is essential for raising healthy seedlings, especially when inert media with a low buffering capacity are used. The objective of this study was to investigate the influence of fertility (as measured by EC) of the nutrient solution used for seedling production. One thousand eight hundred seeds were sown for five treatments and a control (300 seeds per treatment, 3 × 3 cm spacing) using root medium [composed of peat moss + perlite (7:3, v/v)] on raised beds with measurements, 120 × 60 × 25 cm (L × W × H) on Mar 9, 2018. Five nutrient solutions with different strengths (0.4, 0.6, 0.8, 1.0, 1.2 dS m−1 EC) were prepared with ground water (0.25 dS m−1) and a fertilizer stock solution (2 mM NH4+-N, 12 mM NO3−-N, 1 mM H2PO4−, 8 mM K+, 2 mM Ca2+, 1 mM Mg2+, 1 mM SO42−). Fertigation of the beds started on May 21 using each of six nutrient solutions and fertigation frequencies were controlled using an EC5 soil moisture sensor. The stock solutions were automatically supplied for 30 min when the volumetric water content decreased to 36%. Plant growth measurement and soil analyses were carried out twice: first at 144 days and subsequently at 197 days (from the day of seeds sown). For the first growth measurement, elevated EC in the fertilizer solution resulted in enhanced growth, but statistical differences among treatment solutions were not significant except for the case of ground water. In the second measurement, the seedling growth in terms of dry weight of above- and below-ground plant parts increased significantly in plants treated with the 1.0 dS m−1 EC solution and decreased in plants treated with the (1.2 dS m−1 EC) solution. In both the first and second measurements, the ground tissue nutrient content (T-N, P, K and Ca) was significantly different among treatments. The EC of root media in the case of 1.0 dS m−1 treatment, where the seedling growth was the highest among treatments, was 0.54 dS m−1 at the first measurement and 0.82 dS m−1 at the second measurement. In summary, a root medium with a mixture of peat moss + perlite (7:3, v/v), a leaching percentage of 20–30%, and a nutrient solution with a concentration of 1.0 dS m−1 EC is suitable for the healthy growth of ginseng seedlings.

中文翻译:

营养液浓度对含泥炭和珍珠岩根培养基中培养的人参幼苗生长和组织矿物质含量的影响

在高架床改良根培养基中生产人参幼苗有增加的趋势。精确控制根培养基的肥力对于培育健康的幼苗至关重要,尤其是在使用缓冲能力低的惰性培养基时。本研究的目的是调查用于育苗的营养液的肥力(通过 EC 测量)的影响。使用根培养基 [由泥炭藓 + 珍珠岩 (7:3, v/v) 组成] 在高架床上播种 1800 粒种子进行 5 个处理和对照(每个处理 300 粒种子,3 × 3 cm 间距)并进行测量, 120 × 60 × 25 cm (L × W × H) on Mar 9, 2018. 用地下水(0.25 dS m−1) 和肥料原液(2 mM NH4+-N,12 mM NO3--N、1 mM H2PO4-、8 mM K+、2 mM Ca2+、1 mM Mg2+、1 mM SO42-)。5 月 21 日开始使用六种营养液中的每一种对床进行施肥,并使用 EC5 土壤湿度传感器控制施肥频率。当体积含水量降至 36% 时,储备溶液自动供应 30 分钟。植物生长测量和土壤分析进行了两次:第一次在 144 天,随后在 197 天(从种子播种之日起)。对于第一次生长测量,肥料溶液中 EC 升高导致生长增强,但除地下水外,处理溶液之间的统计差异不显着。在第二次测量中,在用 1.0 dS m-1 EC 溶液处理的植物中,以地上和地下植物部分干重计的幼苗生长显着增加,而在用 (1.2 dS m-1 EC) 溶液处理的植物中则降低。在第一次和第二次测量中,不同处理的地面组织养分含量(TN、P、K 和 Ca)显着不同。在 1.0 dS m-1 处理的情况下,幼苗生长在处理中最高,根培养基的 EC 在第一次测量时为 0.54 dS m-1,在第二次测量时为 0.82 dS m-1。综上所述,泥炭藓+珍珠岩(7:3,v/v)的混合物、浸出率为20-30%、浓度为1.0 dS m-1 EC的营养液的根培养基适用于人参苗的健康生长。0 dS m-1 EC 溶液并在用 (1.2 dS m-1 EC) 溶液处理的植物中降低。在第一次和第二次测量中,不同处理的地面组织养分含量(TN、P、K 和 Ca)显着不同。在 1.0 dS m-1 处理的情况下,幼苗生长在处理中最高,根培养基的 EC 在第一次测量时为 0.54 dS m-1,在第二次测量时为 0.82 dS m-1。综上所述,泥炭藓+珍珠岩(7:3,v/v)的混合物、浸出率为20-30%、浓度为1.0 dS m-1 EC的营养液的根培养基适用于人参苗的健康生长。0 dS m-1 EC 溶液并在用 (1.2 dS m-1 EC) 溶液处理的植物中降低。在第一次和第二次测量中,不同处理的地面组织养分含量(TN、P、K 和 Ca)显着不同。在 1.0 dS m-1 处理的情况下,幼苗生长在处理中最高,根培养基的 EC 在第一次测量时为 0.54 dS m-1,在第二次测量时为 0.82 dS m-1。综上所述,泥炭藓+珍珠岩(7:3,v/v)的混合物、浸出率为20-30%、浓度为1.0 dS m-1 EC的营养液的根培养基适用于人参苗的健康生长。在 1.0 dS m-1 处理的情况下,幼苗生长在处理中最高,根培养基的 EC 在第一次测量时为 0.54 dS m-1,在第二次测量时为 0.82 dS m-1。综上所述,泥炭藓+珍珠岩(7:3,v/v)的混合物、浸出率为20-30%、浓度为1.0 dS m-1 EC的营养液的根培养基适用于人参苗的健康生长。在 1.0 dS m-1 处理的情况下,幼苗生长在处理中最高,根培养基的 EC 在第一次测量时为 0.54 dS m-1,在第二次测量时为 0.82 dS m-1。综上所述,泥炭藓+珍珠岩(7:3,v/v)的混合物、浸出率为20-30%、浓度为1.0 dS m-1 EC的营养液的根培养基适用于人参苗的健康生长。
更新日期:2020-06-19
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