Grain Yield and Biomass Potential of Rice Varieties and Orientations ofRice Residues Application

Received: 28-05-2020

Accepted: 16-06-2020

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Issue: Vol. 18 No. 8 (2020)

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NÔNG HỌC

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Vinh, D., Thuy, H., Hung, L., Trung, D., & Toan, N. (2024). Grain Yield and Biomass Potential of Rice Varieties and Orientations ofRice Residues Application. Vietnam Journal of Agricultural Sciences, 18(8), 570–579. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/699

Grain Yield and Biomass Potential of Rice Varieties and Orientations ofRice Residues Application

Do Nang Vinh (*) 1 , Ha Thi Thuy 1 , Le Quoc Hung 1 , Duong Ngo Thanh Trung 1 , Nguyen Van Toan 1

  • 1 Viện Di truyền Nông nghiệp, Viện Khoa học Nông nghiệp Việt Nam

    • Keywords

    Rice varieties, yield, biomass potential

    Abstract


    The objective of this study is to assess the biomass potential of rice and propose some directions to increase the added value of rice production. The method of assessing biomass potential is based on the study of total rice biomass, grain yield, yield and ratio of biomass components of popular and promising rice varieties in the Red River Delta. The results showed that the average yield of varieties reached over 12.7 tons/ha/year. The average straw/grain ratio of all studied varieties is 1.1. The average straw yield is 13.97 tons/ha/year. The average husk /grain ratio reached 20.06%, of which this ratio in Japonica varieties was 19.94%, and Indica varieties was 20.18%. The average bran/grain ratio of varieties was 13.09%, of which this ratio in Indica varieties was 13.61%, while, in Japonica varieties was 12.58%. With an average annual rice production of 43 million tons during 3 years (2016-2018), it is estimated that the country annually produces about 47.623 million tons of straw, 8.685 million tons of rice husks and 5.667 million tons of bran. Total rice by-products (straw, husk, bran) is about 62 million tons per year. The ratio of biomass residues/paddy rice is about 1.43. This is a huge source of biomass to develop the biomass industry in the country.

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