Effects of Planting Density on Growth and Quality of Fritillaria hupehensis

doi:10.13304/j.nykjdb.2022.0095

Abstract

Abstract:

To study the effect of planting density on the growth traits， physiological characters， yield and nutritional quality of Fritillaria hupehensis， and then screen the optimal planting densities， 4 planting densities were set up for the experiment. The results showed that with the increase of density， the plant height， chlorophyll content， catalase activity， superoxide dismutase activity， peroxidase activity and soluble protein content of Fritillaria hupehensis increased first and then decreased. When the plant-row spacing was 10 cm×15 cm （PD3）， the above indexes reached the maximum value， while the superoxide anion free radical content and malondialdehyde content were the minimum. With the increase of planting density， the yield of Fritillaria hupehensis increased. When the row spacing was 5 cm×10 cm （PD1）， the yield （11 975.3 kg·hm^-2） of Fritillaria hupehensis was the largest. The yield increment increased first and then decreased， with the increasing of density. When the row spacing was 10 cm×15 cm （PD3）， the yield increment （5 081.0 kg·hm^-2） and peiminine content （0.297%） of Fritillaria hupehensis were the largest. In conclusion， reasonably dense planting could significantly increase the yield and nutritional quality of Fritillaria hupehensis （P<0.05）， and the plant-row spacing of 10 cm×15 cm was the optimal planting density of Fritillaria hupehensis， which would provide theoretical basis for the high-yield and nutritional quality cultivation of Fritillaria hupehensis.

Key words: Fritillaria hupehensis, planting density, yield, growth traits, physiological characters, quality

摘要：

为探究种植密度对湖北贝母生长性状、生理特性、产量及品质的影响，以筛选最佳种植密度，设置4个株行距种植密度进行试验。结果表明，随着密度的增加，湖北贝母的株高、叶绿素含量、过氧化氢酶活性、超氧化物歧化酶活性、过氧化物酶活性及可溶性蛋白含量均呈先增大后减小的变化趋势。当株行距为10 cm×15 cm（PD3）时，上述指标达到最大值，而超氧阴离子自由基含量及丙二醛含量则最小。随着种植密度的增加，湖北贝母的产量呈增大趋势，当株行距为5 cm×10 cm（PD1）时，湖北贝母的产量（11 975.3 kg·hm^-2）最大。其产量增量及贝母素乙含量则随密度增加呈先增大后减小的变化趋势，当株行距为10 cm×15 cm（PD3）时，湖北贝母的产量增量（5 081.0 kg·hm^-2）及贝母素乙含量（0.297%）最大。综上，合理密植能显著提高湖北贝母的产量及品质（P<0.05），株行距10 cm×15 cm为湖北贝母的最佳种植密度，可为湖北贝母的优质高产栽培提供理论依据。

关键词: 湖北贝母, 种植密度, 产量, 生长性状, 生理特性, 品质

CLC Number:

S512.1

Yuanyuan DUAN, Xiaohong LIU, Tao TANG, Fanfan WANG, Jingmao YOU, Xiaoliang GUO, Jie GUO. Effects of Planting Density on Growth and Quality of Fritillaria hupehensis[J]. Journal of Agricultural Science and Technology, 2023, 25(9): 197-206.

段媛媛, 刘晓洪, 唐涛, 王帆帆, 游景茂, 郭晓亮, 郭杰. 种植密度对湖北贝母生长及品质的影响[J]. 中国农业科技导报, 2023, 25(9): 197-206.

Figures/Tables 6

Fig.1 Growth traits of Fritillaria hupehensis under different planting densitiesNote：The dashed line in the boxplot is the mean and the solid line is the median； different lowercase letters in the same sampling period indicate significant differences between treatments（P<0.05）.

Fig.2 Photosynthetic pigments content of Fritillaria hupehensis with different planting densitiesNote：Different lowercase letters in the same sampling period indicate significant differences between treatments（P<0.05）.

Fig.3 Autioxidant enzyme activities of Fritillaria hupehensis with different planting densitiesNote：Different lowercase letters in the same sampling period indicate significant differences between treatments（P<0.05）.

Fig.4 Osmotic regulation of substance content of Fritillaria hupehensis with different planting densitiesNote：Different lowercase letters in the same sampling period indicate significant differences between treatments（P<0.05）.

Fig.5 Correlation analysis of physiological growth traits of Fritillaria hupehensisNote：* indicates significant correlation at P<0.05 level， ** indicates significant correlation at P<0.01 level， *** indicates significant correlation at P<0.001 level.

Fig.6 Yield of substance content and peiminine of Fritillaria hupehensis with different planting densitiesNote：Different lowercase letters indicate significant differences between treatments（P<0.05）.

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