[1]HUO Hai-li,WANG Qi,ZHANG En-he,et al.Effects of Irrigation and Phosphorus Supply Levels on Hay Yield and Quality of Alfalfa[J].Research of Soil and Water Conservation,2014,21(01):117-121,126.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
117-121,126
Column:
Public date:
2014-02-28
- Title:
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Effects of Irrigation and Phosphorus Supply Levels on Hay Yield and Quality of Alfalfa
- Author(s):
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HUO Hai-li1, WANG Qi1, ZHANG En-he2, SHI Shang-li1, WANG Tian-tao2, LIU Qing-lin2
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1. College of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China;
2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
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- Keywords:
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irrigation; phosphorus fertilization; alfalfa; hay yield; hay quality
- CLC:
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S541.1;S143.2
- DOI:
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- Abstract:
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The study was conducted to establish an accurate irrigation and phosphorus (P) management system for alfalfa planting for the purpose of high hay yield and high contents of crude protein and crude fat by using a randomized complete block split plot design with irrigation levels (conventional irrigation: 330 mm, 20% water-saving irrigation, 264 mm and 40% water-saving irrigation, 198 mm) and P fertility rates (0, 60, 120, 180 kg/hm2)) as the main-plot and split-plot, respectively. The hay yield,the contents of crude protein, the crude fat and the crude ash of alfalfa increased with the increase of irrigation levels, but the content of crude fiber decreased. The hay yield,the content of crude protein and the crude fat of alfalfa increased at first, and then decreased with increase of P supply rate. But the content of crude fiber of alfalfa decreased at first, and then increased with increase of P supply rate. When the P application rate was 60 kg/hm2, the content of crude protein (23.87%) and crude fat (2.48%) of alfalfa reached to the highest level. And the total hay yield (19 114 kg/hm2) of alfalfa reached the maximum as the P application rate reached to 120 kg/hm2.