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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (2): 171-.doi: 10.19802/j.issn.1007-9084.2019320

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Variation trend of rapeseed production in China from 2008 to 2019

  

  1. 1. College of Economics & Management, Huazhong Agricultural University, Wuhan 430070, China; 2. Hubei Rural Development Research Center, Wuhan 430070, China; 3. Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan 430062, China; 4. Institute of Rural Economy, Hubei Academy of Social Sciences, Wuhan 430070, China
  • Online:2021-04-28 Published:2021-03-30

Abstract: To better understand the variation on rapeseed traits in recent 12 years in China, and to provide sug⁃
gestions for high yield cultivation of rapeseed cultivars, yield data of 7916 samples from 18 provinces with fixed ob⁃
servation points of China Agriculture Research System (rapeseed) from 2008 to 2019 was collected. Descriptive sta⁃
tistical method was used to report the variation trend of planting pattern, planting density, plant height, branch, fruit⁃
ing, yield per unit area and disease of rapeseed in China over the past 12 years. The results showed that, during the
past 12 years, direct seeding percentage increased by 30.74 points, planting density increased by 56.66%, effective
branches decreased by 16.05%, first effective branch height increased by 50.20%, plant height increased by 8.82%,
effective pod per plant decreased by 22.14%, seeds per pod increased by 3.02%, 1000-seed weight decreased by
0.62%, average yield per plant decreased by 22.38%, theoretical yield increased by 15.00%, actual yield increased
by 14.03%, cold injury index decreased by 13.57 points, sclerotinia stem rot desease index decreased by 0.83
points, other pests and diseases index increased by 2.34 points. It was suggested that in the future, high-yieldingrape cultivars should be planted with more density tolerance, more branches, more effective pods per plant and more
suitable for environments. Meanwhile, according to the actual situation of each region, the cultivation method of
rapeseed should be guided especially on planting density.

Key words: rapeseed, agronomic traits, yield, planting density, effective pod per plant, branch number, seeds per silique, 1000-seed weight

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