Effects of different seeding rates on seed yield and components of alfalfa

ZHAO Mengyu; WANG Bin; WANG Tengfei; LAN Jian

doi:10.11829/j.issn.1001-0629.2022-0958

Pratacultural Science > 2023 > 40(11): 2871-2878. > DOI: 10.11829/j.issn.1001-0629.2022-0958

ZHAO M Y, WANG B, WANG T F, LAN J. Effects of different seeding rates on seed yield and components of alfalfa. Pratacultural Science, 2023, 40(11): 2871-2878. DOI: 10.11829/j.issn.1001-0629.2022-0958

Citation:

ZHAO M Y, WANG B, WANG T F, LAN J. Effects of different seeding rates on seed yield and components of alfalfa. Pratacultural Science, 2023, 40(11): 2871-2878. DOI: 10.11829/j.issn.1001-0629.2022-0958

Citation:

ZHAO M Y, WANG B, WANG T F, LAN J. Effects of different seeding rates on seed yield and components of alfalfa. Pratacultural Science, 2023, 40(11): 2871-2878. DOI: 10.11829/j.issn.1001-0629.2022-0958

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Effects of different seeding rates on seed yield and components of alfalfa

Ningxia Grass and Animal Husbandry Engineering Technology Research Center / College of Agriculture, Ningxia University, Yinchuan 750021, Ningxia, China

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Corresponding author:
LAN Jian　E-mail: ndlanjian@163.com
Received Date: December 08, 2022
Accepted Date: February 21, 2023
Available Online: September 11, 2023

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Abstract

Abstract

In order to determine the optimum sowing rate of alfalfa seed field in a semi-arid area of the Ningxia region, a single factor randomized block design was used to study the effects of different sowing rates (S₁: 1.2 kg·ha⁻¹, S₂: 1.8 kg·ha⁻¹, S₃: 2.4 kg·ha⁻¹, S₄: 3.0 kg·ha⁻¹, S₅: 3.6 kg·ha⁻¹) on alfalfa seed production performance and composition factors. Plant height, number of primary branches, number of inflorescences per reproductive branch, number of spikelets per inflorescence, number of pods per inflorescence, number of reproductive branches per unit area, number of seeds per pod, 1 000-grain weight, actual seed yield, and the performance seed yield of alfalfa were significantly affected by sowing rate (all P < 0.05). The number of reproductive branches per unit area, number of inflorescences per reproductive branch, number of pods per inflorescence, number of seeds per pod, and the 1000-grain weight were the highest under S₄ sowing rate (177.09, 23.35, 12.56, 6.16, and 1.88 g, respectively). Plant height and number of spikelets per inflorescence reached their maximum under S₂ sowing rate (87.81 cm and 18.18, respectively). The above indices initially increased and then decreased with increasing seeding rate. Seed and actual seed yields were the highest under S₄ treatment (5993.39 and 630.68 kg·ha⁻¹, respectively), representing respective increases of 180.25% and 38.41% compared with S₁ treatment. Correlation analysis revealed that the number of inflorescences per reproductive branch was positively correlated with the number of spikelets per inflorescence and seed yield (S₄ > S₃ > S₂ > S₅ > S₁). The findings suggest that the best sowing rate for alfalfa seed production in the semi-arid area of Ningxia is 3.0 kg·ha⁻¹.
- semi-arid region,
- alfalfa,
- sowing quantity,
- growth indicators,
- seed yield,
- seed production performance,
- constituent factors

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References (26)

References

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