Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (36): 74-78.doi: 10.11924/j.issn.1000-6850.2014-1700

Special Issue: 玉米

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Effects of Different Drip Irrigation Quota on Photosynthetic Performance and
Water Use Efficiency of Maize

Liang Zhejun, Qi Hongli, Wang Yuxiang, Dong Peng, Zhang Dongmei, Yang Yinbin,   

  1. Nan Xueqin, Zhao Haizhen, Xi Tianyuan(Cotton Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000)
  • Received:2014-06-16 Revised:2014-12-30 Accepted:2014-08-08 Online:2015-03-20 Published:2015-03-20

Abstract: In order to research irrigation quota and irrigation cycle of summer maize under drip irrigation condition and establish suitable irrigation system, a field experiment with ‘Zheng dan 958’ cultivar was conducted to evaluate the effects of different drip irrigation quota in different growth stage on growth and development, photosynthetic performance, yield and water use efficiency of maize. The results showed that, as irrigation quota increased, plant height, ear height and the largest leaf area index increased. There were no significant differences in photosynthetic performance of maize ear leaf in silking stage among four better irrigation quota treatments, and the transpiration rates were the same. The descending rate of maize leaf chlorophyll content (SPAD value) in later growth stage decreased with the increase of irrigation quota. With the irrigation quota decreased, ear rows, kernels per row, 1000-grain weight decreased significantly. The DI-2 model was considered more optimum by analyzing yield, WUE and economic benefit. The results can provide a reference for summer corn yield cultivation techniques and water-saving drip irrigation system in southern Shanxi.