›› 2019, Vol. 31 ›› Issue (10): 1583-1590.DOI: 10.3969/j.issn.1004-1524.2019.10.02

• Crop Science • Previous Articles     Next Articles

Effects of spraying boron and molybdenum fertilizers on productivity and nutritional quality of alfalfa under drip irrigation

MIAO Xiaorong, LIU Junying, ZHANG Qianbing*, LI Feifei, SUN Yanmei, YU Lei, MA Chunhui   

  1. College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
  • Received:2019-05-29 Online:2019-10-25 Published:2019-10-30

Abstract: To study the effects of spraying boron and molybdenum fertilizers on hay yield and nutritional quality of alfalfa under drip irrigation in oasis region of Xinjiang, four treatments, i.e., application of molybdenum (Mo), application of boron (B), application of boron and molybdenum (B+Mo), and without application of fertilization (CK) were established. Growth traits, hay yield, and the nutritional quality of alfalfa were studied. It was shown that the highest total hay yield of alfalfa was 17 186.41 kg·hm-2 under B+Mo. There was no significant difference on total hay yield of alfalfa between B and B+Mo. Among indexes of plant height, stem diameter, leaf-stem ratio, growth rate, the highest correlation with hay yield was found in plant height, yet the lowest correlation was found in leaf-stem ratio. The crude protein content of alfalfa under B+Mo was increased by 13.96%-27.64% than that of CK. The crude protein content of alfalfa under B+Mo and B was significantly (P<0.05) greater than that under CK except the third cut, while the crude protein content of alfalfa under B+Mo was significantly (P<0.05) greater than that under Mo except the fourth cut. The acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents of alfalfa under B+Mo were significantly (P<0.05) lower than those under CK. The total hay yield of alfalfa was significantly (P<0.01) positively correlated with crude protein content and relative feeding value. The crude protein content of alfalfa was significantly (P<0.05) positively correlated with the relative feeding value, and the ADF content of alfalfa was significantly (P<0.05) positively correlated with the NDF content. It was concluded that application of B and Mo was beneficial to promote the formation of alfalfa hay yield and to improve the nutritional quality under drip irrigation in Xinjiang oasis area, and the effect of application of B on alfalfa under drip irrigation was better than that of application of Mo.

Key words: alfalfa, molybdenum fertilizer, boron fertilizer, nutritional quality

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