Photosynthetic production of wheat under precision planting patterns in northern china

Authors

  • Zhen Zhang Agricultural College of Guangxi University
  • Xiang Min Mao Agricultural College of Guangxi University
  • Wen Wen Zhong Shandong Agricultural University
  • Zhi Bo Feng Shandong Agricultural University
  • Xun Bo Zhou Agricultural College of Guangxi University

DOI:

https://doi.org/10.14393/BJ-v33n1a2017-30328

Keywords:

Triticum aestivum, PAR capture ratio, Net photosynthetic rate, Leaf area index, Yield components

Abstract

Winter wheat (Triticum aestivum) is cultivated across a wide region; however, water is scarce during the growing season of wheat in the Northern Plain of China. Therefore, winter wheat should be irrigated to maintain a stable and high grain yield. The aim of this field study was to develop a water-conserving precision planting pattern for winter wheat that is grown in the Northern China Plain with the purpose of exploring the benefits in maintaining water and effects on wheat productivity. To accomplish this, several production variables and photosynthetic indexes were measured, including the number of stems, the leaf area index (LAI), photosynthetically available radiation (PAR), net photosynthetic rate, and grain yield. The study was carried out during the 2011–2012 and 2012–2013 winter wheat growing seasons. The experiment included a double-row planting pattern (DRPP) and a single-row planting pattern (SRPP), both of which were either irrigated or rainfed. The area of each plot was 9 m2, and the experimental design was a randomized blocks design with three replicates. All results were analyzed with an ANOVA, the F test, and the LSD (p ≤ 0.05) for means comparison. PAR capture ratios in the DRPP were higher than those in the SRPP at 50–120 cm above the ground. The photosynthetic traits of flag leaves under irrigated conditions were not significantly influenced by the respective planting pattern. However, at a growth stage of 80 under the rainfed conditions, the mean photosynthetic rate within flag leaves in the DRPP was higher than that in the SRPP. Furthermore, the DRPP under rainfed conditions was more likely to increase the apparent quantum yield (AQY) of flag leaves than the yield obtained under irrigation. These results suggest that DRPP optimizes the canopy PAR distribution in winter wheat and contributes to the maintenance of a higher photosynthetic capacity in the flag leaves under water stress (the rainfed condition). This relationship may be applied in demonstration trials to encourage winter wheat farmers to incorporate the use of DRPP in the drought-prone areas, which are subjected to insufficient precipitation during the growing stage of wheat in Northern China. 

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Published

2017-02-09

How to Cite

ZHANG, Z., MAO, X.M., ZHONG, W.W., FENG, Z.B. and ZHOU, X.B., 2017. Photosynthetic production of wheat under precision planting patterns in northern china . Bioscience Journal [online], vol. 33, no. 1, pp. 1–9. [Accessed2 December 2022]. DOI 10.14393/BJ-v33n1a2017-30328. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/30328.

Issue

Section

Agricultural Sciences