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Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (11): 212-220.DOI: 10.11686/cyxb2020417

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Studies on multiple intercropping effects and quality of autumn sown triticale and sweet sorghum in central Gansu Province

Dan-dan CHANG(), Xu WANG, Xin-hui TIAN, Wen-hua DU()   

  1. College of Grassland Science,Gansu Agricultural University,Key Laboratory of Grassland Ecosystem,Gansu Agricultural University,Ministry of Education,Sino-U. S. Centers for Grazingland Ecosystem Sustainability,Lanzhou 730070,China
  • Received:2020-09-14 Revised:2020-10-29 Online:2021-10-19 Published:2021-10-19
  • Contact: Wen-hua DU

Abstract:

This research explored the optimal planting configuration when intercropping autumn sown triticale and sweet sorghum in central Gansu Province. The experiment was conducted in 2017-2018 at Lanzhou, Gansu Province, utilizing a three-factor split-split plot design. Main plots contained Gannong No.2 triticale; Sub-plots contained intercropped triticale and sweet sorghum, and varieties of sweet sorghum (Dajiang 1000 and Dajiang 505) were the sub-sub plot factors. Parameters measured included the number of branches, plant height, forage yield and nutritional quality for the autumn sown triticale; While for sweet sorghum, plant height, number of leaves, leaf length and width, stem diameter, forage yield and nutritional quality were determined and analyzed. It was found that the optimum planting practice for intercropping triticale and sweet sorghum was to sown triticale (variety Gannong No.2) in autumn at 30 cm row spacing with every three row left blank, and to sow the blank row in sweet sorghum (Dajiang 1000) in the summer of the following year. Triticale and sweet sorghum were harvested at flowering and heading stages respectively, and the annual total fresh and hay yields at this site in the central region of Gansu Province were, respectively, up to 136.52 and 38.52 t·ha-1.

Key words: autumn sown, triticale, multiple intercropping, sweet sorghum