Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (3): 13-19.doi: 10.11924/j.issn.1000-6850.casb20200300265

Special Issue: 小麦

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Effect of Reducing Phosphate Fertilizer and Applying Biochar on Phosphorus Utilization and Yield of Spring Wheat in Northern Xinjiang

He Jiaqi1(), Yang Weijun1(), Jia Yonghong2, Li Yonghao1, Xing Dongjian1, Hui Chao1, Gao Wencui1   

  1. 1College of Agronomy, Xinjiang Agricultural University, Urumqi Xinjiang 830000
    2Test Station of Wheat and Barley, Xinjiang Academy of Agricultural Sciences, Qitai Xinjiang 831800
  • Received:2020-03-27 Revised:2020-04-28 Online:2021-01-25 Published:2021-01-26
  • Contact: Yang Weijun E-mail:15835703428@163.com;1984_ywj@163.com

Abstract:

This experiment aims to investigate different fertilization patterns’ influence on the accumulation and transport of phosphorus and yield of wheat, and provide references for scientific reduction of phosphorus and application of biochar, thus raise the utilization ratio of phosphate fertilizer. 4 levels of phosphate fertilizer (P2O5) and 3 levels of biochar were set to compare the difference of wheat phosphorus accumulation, utilization rate, and yield under different fertilization modes. The results showed that by reducing phosphorus 15% (102 kg/hm2) and applying biochar 22.5 t/hm2 (P3B2), the comprehensive effect was the best, the dry matter quality of spring wheat was the highest, with an increase of 4.07g/plant (8.24%) compared with that of the control. Under this treatment, the phosphorus content of the plant increased by 6.21% compared with that of the control, mainly distributed in the ear; phosphorus transfer in stem increased the most when phosphate fertilizer was applied with low biochar and the least when phosphate fertilizer was applied with high biochar. The effect of phosphate fertilizer combined with biochar on leaf phosphorus was greater than that of single phosphate fertilizer. Under the conditions of this experiment, applying 102 kg/hm2 with biochar 22.5 t/hm2has a significant promoting effect on the contribution rate of stem and leaf to grain, and can improve the utilization efficiency and physiological efficiency of phosphorus and achieve the best yield increase.

Key words: spring wheat in irrigated areas, biochar application, phosphorus utilization rate, yield

CLC Number: