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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (1): 31-36.doi: 10.11924/j.issn.1000-6850.casb2022-0031

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Adaptability and Wind Erosion Resistance of Winter Rapeseed in Semi-arid Area of Central Gansu

KANG Yunqiang(), LI Lingling(), XIE Junhong, ZHANG Jian, DU Changliang, ZECHARIAH Effah   

  1. State Key Laboratory of Aridland Crop Science (Gansu Agricultural University)/ College of Agronomy, Gansu Agricultural University, Lanzhou 730070
  • Received:2022-01-18 Revised:2022-04-02 Online:2023-01-05 Published:2022-12-27
  • Contact: LI Lingling E-mail:3097567645@qq.com;lill@gsau.edu.cn

Abstract:

To explore the adaptability and wind erosion resistance of different varieties of winter rapeseed in semi-arid agricultural areas of central Gansu, six winter rapeseed varieties (winter Brassica rapa ‘HN12PZ16-2’,‘HN12PZ16-65’ and ‘Pingshi 8’, winter Brassica napus ‘QL-GAU-201’, ‘QL-GAU-196’ and ‘Low(1)-19’) were selected as the research objects, and their overwintering rate, wind erosion resistance, yield and oil content were analyzed in detail. The results showed that, the root-shoot ratio of winter Brassica rapa was significantly higher than that of winter Brassica napus before winter, and the overwintering survival rate was also significantly higher than that of winter Brassica napus. The overwintering rate of ‘HN12PZ16-65’ was the highest, reaching 88.33%. The yield and oil content of winter Brassica rapa were significantly higher than those of winter Brassica napus due to high plant height and 1000-grain weight, and the yield (2937.00 kg/hm2) and oil content (43.67%) of ‘HN12PZ16-65’ were the highest. The dry matter accumulation of winter rapeseed was high before winter, which increased the starting wind speed of farmland and significantly reduced the wind erosion of farmland. The wind erosion of farmland soil of the six winter rapeseed varieties decreased by 88.77%-92.79% compared with that of the open field. Therefore, ‘HN12PZ16-65’ has strong drought resistance, high overwintering rate, high yield and oil content, good adaptability and good wind erosion resistance in central Gansu, which is suitable for wind erosion wintering cultivation in semi-arid agricultural areas.

Key words: winter rapeseed, adaptability, wind erosion resistance, overwintering rate, oil content

CLC Number: