Study on Photosynthetic Characteristics and Yield of Winter Wheat under Different Intercropping Modes

doi:10.7668/hbnxb.20191300

Abstract

Abstract: To discuss the difference in wheat yield under different winter wheat interplanting peanut planting modes,field experiment was conducted to study the effects of different winter wheat interplanting peanut planting modes on flag leaf photosynthetic rate,SPAD value,canopy temperature and maximum LAI of wheat. Four treatments were set up in the experiment:large ridge was covered mulching film (T1),large ridge was not covered mulching film (T2),small ridge was not covered mulching film (T3) and 15 cm equal row spacing (T4,control). The results showed that T1 treatment reduced the photosynthetic rate of flag leaves in the later stage of wheat grouting,T2 and T3 treatments significantly increased the photosynthetic rate of flag leaves in the later stage of wheat grouting. SPAD values of flag leaves at booting stage of T1,T2 and T3 treatments were all higher than those of control,while SPAD values of flag leaves at flowering stage and middle grouting stage were lower than that of the control; the canopy temperature before flowering of the three interplanting modes were significantly higher than that of the control,while the maximum LAI was lower than that of the control,the treatment of T1 and T2 were significantly different from that of the control. The change of winter wheat yield was:T2 < T1 < T3 < T4 in 2017-2018,the difference between the three intercropping modes and the control was very significant,and the difference between the three intercropping modes was very significant. Considering the yield of wheat,peanut,planting benefit and environmental pollution,this study concluded that small ridge was not covered mulching film winter wheat interplanting peanut planting mode was the best mode among different interplanting patterns.

Key words: Winter wheat, Intercropping, Peanut, Photosynthetic rate, Yield

CLC Number:

S512.01

DONG Zhiqiang, ZHENG Mengjing, Lü Lihua, ZHANG Jingting, SHEN Haiping, YAO Yanrong, ZHANG Lihua, JIA Xiuling. Study on Photosynthetic Characteristics and Yield of Winter Wheat under Different Intercropping Modes[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 133-137. doi: 10.7668/hbnxb.20191300.

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