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Acta Prataculturae Sinica ›› 2010, Vol. 19 ›› Issue (2): 218-226.

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Studies on agri-structure optimizing theory and its impact to farm straw feeding,forage grass prodcution and food security in low-lying land along River Huai

XIA Lun-zhi1, XU Yi-liu1, ZHANG Chang-qing1, XIAO Yang-shu1, YAN Xiao-ming1, ZHANG Li2   

  1. 1.Anhui Academy of Agriculture Sciences, Hefei 230031, China;
    2.Jieshou City
    Animal Livestock Bureau, Jieshou 236500, China
  • Received:2009-03-19 Online:2010-02-25 Published:2010-04-20

Abstract: To improve agricultural economic benefits and eco-efficiency in low-lying land along the River Huai, the evaluating quantitative indexes in agri-structure optimization were investigated. The agriculture ecosystem and agri-structure actuality in the region were analyzed first. The new term “Digestible Bio-mass Yield per Hectare per Year” (DBYHY) is given as an evaluation index and the scientific value of DBYHY to agri-structure optimization,farm straw feeding,forage grass production and food security ensuring is discussed. For the first time, the correct Total Digestible Nutrients (TDNc) formula was found together with its value for estimating the DBYHY. The size of the TDNc value in the region decreases from floatgrass to rice-rye, alfalfa, 2/5 rye+3/5 alfalfa, rice-wheat, rice-rape, corn-rape, peanut, rice and rape.

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