Crops ›› 2022, Vol. 38 ›› Issue (4): 205-213.doi: 10.16035/j.issn.1001-7283.2022.04.029

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Effects of Sowing Density on Growth, Nutritional Quality and Soil Enzyme Activity of Pinellia ternata in Different Seasons

Zhou Wuxian1(), Li Mengge2, Tan Xuhui1, Wang Youyuan2, Wang Hua1, Jiang Xiaogang1, Duan Yuanyuan1, Zhang Meide1()   

  1. 1Institute of Chinese Herbal Medicines, Hubei Academy of Agricultural Sciences, Enshi 445000, Hubei, China
    2Tianmen Academy of Agricultural Sciences, Tianmen 431700, Hubei, China
  • Received:2021-04-21 Revised:2021-07-09 Online:2022-08-15 Published:2022-08-22
  • Contact: Zhang Meide E-mail:zhou_wx222@163.com;emailtoecho@163.com

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Abstract:

The objective of this research was to determine the effects of different sowing densities on yield, quality, and soil enzyme activity of Pinellia ternata through a field experiment with six sowing density treatments (2250, 3000, 3750, 4500, 5250 and 6000kg/ha) in different seasons to provide a scientific cultivation technology for P. ternata. The results showed that the plant height, leaf length, leaf width, and SPAD value of P. ternata were decreased with the increase of sowing densities in spring and autumn. The yield was first increased and then remained constant with the increase of sowing densities, while the yield increment was first increased and then decreased, and the maximum yield increment reached at a density of 3750kg/ha. The alkaloid, flavonoid, and protein contents (except alkaloid and flavonoid in spring) showed a decreasing trend with the increase of sowing densities, while soluble sugar showed an increasing trend in spring and autumn. In general, except soil alkaline phosphatase activity in autumn and urease activity in spring, the activities of soil alkaline phosphatase, urease, saccharase, and catalase showed an increasing trend with the increase of sowing densities. Overall, sowing densities had significant effects on the yield, quality, and soil enzyme activities of P. ternata in different seasons. The yield could reach the highest level when the P. ternata was harvested in autumn under the sowing density of 3750-4500kg/ha without affecting quality.

Key words: Pinellia ternata, Sowing density, Yield, Quality, Soil enzyme activity

Fig.1

Effects of different sowing densities on plant height, leaf characteristic and SPAD value of P. ternate Different lowercase letters indicate significant difference (P < 0.05) between different treatments, the same below"

Fig.2

Effects of different sowing densities on yield of P. ternata"

Fig.3

Effects of different sowing densities on quality of P. ternata"

Fig.4

Effects of different sowing densities on soil enzyme activities of P. ternata"

Table 1

Pearson correlation coefficients between sowing densities and morphological characteristics,yield, quality and soil enzyme activities of P. ternata in different growth stages"

时期Stage PH LL LW SPAD Y YI AKL FLV SP SS ALP URE SAC SCAT
春季Spring -0.642** -0.389 -0.419* -0.693** 0.947** -0.136 0.161 -0.099 -0.961** 0.656** 0.756** -0.544** 0.804** 0.615**
秋季Autumn -0.790** -0.741** -0.740** -0.889** 0.906** -0.160 -0.846** -0.785** -0.848** 0.762** -0.288 0.456* 0.785** 0.718**

Table 2

P-values from ANOVA testing effects of growth stage, sowing density and their interaction on P. ternata yield, quality and soil enzyme activities"

项目Item 自由度df Y YI AKL FLV SP SS ALP URE SAC SCAT
生长时期Growth stage 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
播种密度Sowing density 5 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000
生长时期×播种密度Growth stage×sowing density 5 0.509 0.509 0.000 0.009 0.002 0.985 0.000 0.000 0.000 0.000

Fig.5

The redundancy analysis of growth trait, quality and soil enzyme activity of P. ternata in spring (a) and autumn (b)"

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