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Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (6): 189-201.DOI: 10.11686/cyxb2021445

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Dynamic changes in biomass accumulation and nutritional quality of triticeae forages

Yong-liang YOU1(), Hai-ming ZHAO1, Yuan LI1, Rui-xin WU1, Gui-bo LIU1(), Jian-dong ZHOU2, Jun-feng CHEN3   

  1. 1.Dryland Farming Institute of Hebei Academy of Agricultural and Forestry Sciences,Key Laboratory of Crop Drought Tolerance Research of Hebei Province,Hengshui 053000,China
    2.Langfang Academy of Agriculture and Forestry Science,Langfang 065000,China
    3.Hengshui Animal Husbandry and Technology Promotion Station,Hengshui 053000,China
  • Received:2021-11-30 Revised:2022-01-10 Online:2022-06-20 Published:2022-05-11
  • Contact: Gui-bo LIU

Abstract:

To elucidate the dynamics of biomass accumulation and nutritional quality of triticeae forages, seven species or varieties of triticeae forages (rye, winter triticale, winter wheat, grain-forage triticale, oats, barley, spring triticale) were studied. The growth and development process from the jointing stage to the dough stage and the dynamic changes in dry matter yield and nutrient content were analyzed for crops in the North China Plain from 2016 to 2018. It was found that rye, winter triticale, winter wheat, grain-forage triticale generally reached the milk stage in mid to late May, while oats, barley and spring triticale generally reached the milk stage in early June. The average biomass of the seven tested triticeae forages increased from 2.72 t·ha-1 at the jointing stage to 10.19 t·ha-1 at the dough stage. The biomass of winter triticale at each growth stage was significantly higher than that of the other six triticeae forages tested (P<0.05), and was 61.4% higher than the average for those six crops. The crude protein content of all seven crops decreased gradually as the crops developed and matured, while the starch content increased gradually. The acid detergent fiber and neutral detergent fiber contents increased gradually up to flowering, but decreased slightly thereafter. The software Milk 2006 was used to perform a multi-trait evaluation of the feeding quality of the seven triticeae forages. This analysis indicated that the feeding quality of winter wheat was better than that of the other six tested crops after the booting stage, and the milk yield per ton dry matter was predicted to be 6.9% higher on average than that of the other six crops. Multivariate analysis of biomass and feeding quality across growth stages showed that the milk yield per hectare of winter triticale from the jointing stage to the dough stage was on average 46.3% higher (P<0.05) than that of the other six tested crops. In this research, on the North China Plain, winter triticale performed best among the tested crops and it is recommended that the planting of winter triticale should be promoted.

Key words: triticeae forages, biomass, nutrient content, dynamic change, Milk 2006