Production Potentials of Biomass and Crude Protein, and Ammonia Volatilizations Under Different Forage -Crop Rotations

YANG Ling; LIAO Wenhua; GAO Zhiling; WANG Sen; ZHANG Jinrui; ZHAO Yingjie

doi:10.13870/j.cnki.stbcxb.2018.02.046

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Production Potentials of Biomass and Crude Protein, and Ammonia Volatilizations Under Different Forage -Crop Rotations

更新时间：2025-03-12

- Production Potentials of Biomass and Crude Protein, and Ammonia Volatilizations Under Different Forage -Crop Rotations
- Vol. 32, Issue 2, Pages: 312-320(2018)
- 作者机构：
  
  河北农业大学资源与环境科学学院,河北,保定,071000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.02.046
  CLC： S19;S548;S143.1+2
- Published：2018
- 稿件说明：
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YANG Ling, LIAO Wenhua, GAO Zhiling, et al. Production Potentials of Biomass and Crude Protein, and Ammonia Volatilizations Under Different Forage -Crop Rotations[J]. 2018, 32(2): 312-320.
DOI：

YANG Ling, LIAO Wenhua, GAO Zhiling, et al. Production Potentials of Biomass and Crude Protein, and Ammonia Volatilizations Under Different Forage -Crop Rotations[J]. 2018, 32(2): 312-320. DOI： 10.13870/j.cnki.stbcxb.2018.02.046.

摘要

通过田间试验研究了不同作物轮作模式中生物质、粗蛋白生产潜力和氨排放，以探讨粮改饲进程中较优的种植模式。以冬小麦—夏玉米（W-SuM）轮作为基准，探讨了华北地区黑麦草—夏玉米（R-SuM）、黑麦草—春玉米（R-SpM）、黑麦草—双季玉米（R-DM）和双季玉米(DM) 4种轮作体系的干物质、粗蛋白的生产潜力和氨气排放。结果表明：黑麦草—双玉米轮作模式较好，干物质年产量和粗蛋白含量分别达到31 012，2 529 kg/hm2，比常规冬小麦—夏玉米体系分别增加了14.3%，8.2%；不同轮作模式下氨排放量为13.43～23.77 kg/hm2，占肥料氮素投入的4.2%～5.6%，排放顺序为R-DM＞W-SuM＞R-SpM＞R-SuM＞DM；不同轮作模式氨排放的时间分布特征也存在明显差异，双玉米轮作体系（DM）的氨挥发主要发生在夏季，其夏季贡献率明显高于其他4种轮作模式。黑麦草—双玉米轮作体系在粗蛋白和干物质产量上可能具有较高的生产潜力。

Abstract

To optimize the management practices during the transition period "Grain for forage" in North China

the production potentials of biomass and crude protein and the ammonia (NH3) emissions under 4 different rotations were investigated with field experiment. A field experiment including 5 crop rotations was conducted

of which the traditional winter wheat-summer maize rotation (W-SuM) was considered the reference to evaluate the production potentials of biomass and crude protein in other rotations such as ryegrass -summer maize (R-SuM)

ryegrass-spring maize (R-SpM)

ryegrass-double summer maize (R-DM) and double summer maize (DM)

and their NH3 emissions were also measured in situ with Draeger-tube method (DTM). Results indicated that among the 5 crop rotations

the R-DM rotation had the greatest biomass (31 012 kg/hm2) and crude protein (2 529 kg/hm2) production

which were 14.3% and 8.2% greater respectively than those in the W-SuM rotation. The annual NH3 volatilizations from these rotations ranged from 13.43 to 23.77 kg/hm2

accounting for 4.2%～5.6% of their N applications

which were both in an order of R-DM＞W-SuM＞R-SpM＞R-SuM＞DM. Meanwhile

the seasonal distributions of NH3 emissions under different rotations differed

e.g. the contribution of NH3 volatilization in summer season in DM rotation was much greater than those in other rotations. The ryegrass-double summer maize rotation was high likely to produce the greater biomass and crude protein.

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