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Effects of Intercropping of Two Genotypes of Wheat on Grain Filling Characteristics and Yield
ZHAO Lishang, WANG Xiangsheng, GAO Nanan, HAN Pengbin, LI Jie, REN Yongzhe, LIN Tongbao, WANG Zhiqiang, LIAN Yanhao
Journal of Henan Agricultural Sciences
2023, 52 (8):
18-25.
DOI: 10.15933/j.cnki.1004-3268.2023.08.003
In order to explore the intercropping effect between common wheat and colored wheat,a field experiment was conducted. Common wheat monoculture(W)and colored wheat monoculture(H)were used as controls,and intercropping treatment between common wheat and colored wheat(W||H)was set up to investigate the effect of intercropping on the grain filling characteristics and yield of different genotypes of wheat. The results showed that,compared with monoculture treatment,the SPAD value and net photosynthetic rate of flag leaves of colored wheat of intercropping treatment significantly increased at 25 days after flowering,which further increased the accumulation of grain dry matter at 30—35 days after flowering,and 1 000‑grain weight and grain weight per ear significantly increased by 4.9% and 15.2%,respectively;grain filling duration and effective filling duration of intercropping treatment increased by 1.90 d and 1.06 d for colored wheat,and decreased by 2.89 d and 1.08 d for common wheat,respectively.The total ear number and yield of intercropping treatment significantly increased by 8.5%and 15.1% compared with colored wheat monoculture treatment,and significantly decreased by 4.7%and 21.5% compared with common wheat monoculture treatment,respectively.The land equivalent ratio of intercropping treatment was 0.91.Correlation analysis showed that yield was positively correlated with theoretical maximum grain weight and effective filling duration,and the correlation coefficients were 0.891 and 0.920,respectively.Overall,intercropping between colored wheat and common wheat can improve photosynthetic and grain filling characteristics of colored wheat,which has intercropping advantages.
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