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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (2): 216-.doi: 10.19802/j.issn.1007-9084.2020042

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Effect of seeding amount on rapeseed blanket seedling growth

  

  1. Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Ecology and Cultivation in Middle and Lower Reaches of Yangtse River of Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou 225009, China
  • Online:2020-04-28 Published:2020-05-22

Abstract:

Effect of seeding amount on growth of rapeseed blanket seedling was investigated. By measuring emergence number, survival seedling numbers, shoot biomass, growth of leaf and root collar were studied under dif⁃ferent seeding amount with 2 varieties. Results showed that under higher seeding rate, emergence rate, survival seedling rate, shoot dry weight, cotyledon growth, first leaf, and root collar diameter were decreased, while seedling height and root collar were increased. But to make up for individual growth weakness, denser seedlings by some ex⁃tent led to higher total dry weight of shoots. Regression analysis between plate seeding rate and survival seedling numbers found that the optimal plate seeding rate was 700 to 750 grains according to transplanting demand in pro⁃duction

Key words:  , Brassica napus L.;rapeseed blanket seedling;plate seeding rate

CLC Number: