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中国油料作物学报 ›› 2019, Vol. 41 ›› Issue (3): 317-.doi: 10.7505/j.issn.1007-9084.2019.03.002

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Benefits of mixed cropping of forage rapeseed with other forage crops

  

  1. 1. College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Crop Ecophysiology and Farming Systems in the Middle Reaches of the Yangtze River, Ministry of Agriculture; Wuhan 430070, China; 
    2. Animal Husbandry and Veterinary Bureau, Wuhan 430070, China; 
    3. Animal Breeding Center of Hubei Province, Wuhan 430070, China; 
    4. National Agricultural Technology Extension Service Center, Beijing 100125, China
  • Online:2019-06-28 Published:2019-09-02

Abstract: The purpose of this study was to cover the shortage of forage crop in winter and to increase the biomass yield and the quality of forage rapeseed by improving the planting pattern of winter forage crop. In this study, rapeseed was sown after mixing with milk vetch (Astragalus sinicus), ryegrass (Lolium perenne L.) and hairy vetch (Vicia villosa) in different mixed ratios. The plot experiments were conducted to measure the biomass, CP, C and N content of each treatment, exploring the feasibility of mixed cropping of forage rapeseed with other forage crops. The results showed that there were significant differences among the mixed cropping of forage rapeseed with milk vetch, ryegrass and hairy vetch. (1) Forage rapeseed mixed with hairy vetch in all different ratios increased the biomass. Mixed cropping at the ratio 1:4 could obtain higher biomass and dry weight than the other ratios under different stages, and which also improved CP significantly at the final flowering stage. (2) Forage rapeseed mixed with milk vetch could increase the biomass of forage rapeseed with no significant difference. The milk vetch mixed with forage rapeseed died at the late stage due to the weak light. (3) Forage rapeseed mixed cropped with ryegrass decreased the biomass and CP. Therefore, forage rapeseed mixed cropped with hairy vetch was proven an effective system to improve the benefit of winter forage production in the Yangtze River Valley. 

Key words: forage rapeseed (Brassica napus L.), mixed cropping, biomass, crude protein, benefit

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