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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (8): 1-5.doi: 10.11924/j.issn.1000-6850.casb2023-0291

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Effect of Planting Density on Lodging Resistance and Yield of Flax

YANG Zhiwei(), QIAN Aiping, ZHANG Wei, CAO Xiuxia()   

  1. Guyuan Branch of Ningxia Academy of Agriculture and Forestry Sciences, Guyuan, Ningxia 756000
  • Received:2023-04-13 Revised:2023-07-19 Online:2024-03-15 Published:2024-03-10

Abstract:

To explore the effect of planting density on lodging resistance and yield of flax, ‘Ningya No. 21’ was selected as the material, which was planted in a large area of irrigated land in the southern mountainous area of Ningnan. Lodging resistance and yield composition under different planting densities were studied by setting four planting densities, including 30×105, 45×105, 60×105 and 75×105plants/hm2. The results showed that with the increase of planting density, the stem bending resistance, stem thickness, stem wall thickness, lignin content, effective fruit number and yield per plant decreased gradually, and the yield increased first and then decreased. Correlation analysis showed that the stem bending resistance was extremely correlated with stem diameter, stem wall thickness and crown weight, the lignin content and lodging rate were significantly negatively correlated. Considering the increase of yield and efficiency, good lodging resistance and relatively stable yield, it is recommended that the planting density of ‘Ningya No. 21’ in irrigated land in the southern mountainous area of Ningnan is 45×105 plants/hm2.

Key words: flax, density, yield, lodging resistance