Effects of rotation systems on yields and physiological indicators of wheat

doi:10.11686/cyxb2018086

Abstract

Abstract: The aim of this study was to determine the effects of three planting patterns (alfalfa-wheat, AW; soybean-wheat, SW; and corn-wheat, CW) on the yields (grain yield, seed production rate, and biomass of above ground parts) and physiological indicators (SPAD value, leaf area index, net photosynthetic rate, transpiration rate, nitrate reductase activity) of wheat. The yield of wheat was significantly higher in AW than in SW and CW, and not significantly different between SW and CW. The SPAD value and leaf area index of flag leaves were significantly higher in AW than in SW and CW in every important period of wheat growth. The net photosynthetic rate of wheat was higher at the later filling and maturity stages, while the wheat transpiration rate significantly decreased at the booting stage. The activity of nitrate reductase was higher in AW than in SW and CW during the whole growing period of wheat. These results indicate that the AW pattern is suitable for optimal use of nitrogen fertilizer by wheat to improve its yields.

Key words: alfalfa, rotation pattern, wheat, yield, physiological indicators

LIU Hong-qing, FU Dan-dan, WU Hai-jie, MIAO Fu-hong, SUN Juan, YANG Guo-feng. Effects of rotation systems on yields and physiological indicators of wheat[J]. Acta Prataculturae Sinica, 2018, 27(8): 59-66.

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