Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

doi:10.1016/S1671-2927(00)8637

Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (7): 1119-1128.DOI: 10.1016/S1671-2927(00)8637

Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

WEN Xiao-xia, ZHANG De-qi, LIAO Yun-cheng, JIA Zhi-kuan, JI Shu-qin

1.College of Agronomy, Northwest A&F University, Yangling 712100, P.R.China
2.Wheat Research Centre, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P.R.China

收稿日期:2011-03-31 出版日期:2012-07-01 发布日期:2012-07-27
通讯作者: LIAO Yun-cheng, Tel: +86-29-87082990, E-mail: yunchengliao@163.com, yunchengliao@nwsuaf.edu.cn
基金资助:
This work was financially supported by the National Natural Science Foundation of China (30300213 and 30070439), and the Program for New Century Excellent Talents in University, China (NCET-07-0700).

Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

WEN Xiao-xia, ZHANG De-qi, LIAO Yun-cheng, JIA Zhi-kuan, JI Shu-qin

1.College of Agronomy, Northwest A&F University, Yangling 712100, P.R.China
2.Wheat Research Centre, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P.R.China

Received:2011-03-31 Online:2012-07-01 Published:2012-07-27
Contact: LIAO Yun-cheng, Tel: +86-29-87082990, E-mail: yunchengliao@163.com, yunchengliao@nwsuaf.edu.cn
Supported by:
This work was financially supported by the National Natural Science Foundation of China (30300213 and 30070439), and the Program for New Century Excellent Talents in University, China (NCET-07-0700).

摘要/Abstract

摘要： Field experiments were conducted in 2003 and 2004 to study the effects of plastic ridges and furrow film mulching (plastic film on sowing, as well as plastic film on flat soil and hole sowing) and chemicals (a drought resistant agent and a waterretaining agent) on growth, photosynthetic rate, yield, and water use efficiency (WUE) of spring millet (Setaria italica L.). The experimental results showed that water-collecting and -retaining techniques can effectively increase soil moisture content, the leaf photosynthetic rate and crop growth. Due to increased soil moisture under the plastic-covered ridge and furrow water-collecting in July and August, dry matter and plant height had a increase at the booting stage (late growth advantage). However, the plastic-covered flat soil and hole sowing reduced soil evaporation during early growth, the increase of dry matter and plant height appeared at the seedling stage (early growth advantage). Plastic-covered ridge and furrow sowing supplemented with chemical reagents had significant positive effects on water collection and soil moisture retention. Improvement of soil moisture resulted into the increase of the photosynthetic rate, dry matter accumulation yield and WUE. The water-collecting and -retaining techniques can improve WUE and enhance crop yield. Correlation analysis demonstrated that the photosynthetic rate under the water-collecting and -retaining techniques was significantly associated with the soil moisture, but had no significant relationship with leaf chlorophyll content. Plasticcovered ridge and furrow sowing supplemented with chemical reagents increased the yield and WUE by 114% and 8.16 kg ha-1 mm-1, respectively, compared with the control; while without the chemical reagents the yield and WUE were 95% and 7.42 kg ha-1 mm-1 higher, respectively, than those of the control.

关键词: water use efficiency, Loess Plateau of China, plastic film mulch, drought-resistant agent, water-retaining agent

Abstract: Field experiments were conducted in 2003 and 2004 to study the effects of plastic ridges and furrow film mulching (plastic film on sowing, as well as plastic film on flat soil and hole sowing) and chemicals (a drought resistant agent and a waterretaining agent) on growth, photosynthetic rate, yield, and water use efficiency (WUE) of spring millet (Setaria italica L.). The experimental results showed that water-collecting and -retaining techniques can effectively increase soil moisture content, the leaf photosynthetic rate and crop growth. Due to increased soil moisture under the plastic-covered ridge and furrow water-collecting in July and August, dry matter and plant height had a increase at the booting stage (late growth advantage). However, the plastic-covered flat soil and hole sowing reduced soil evaporation during early growth, the increase of dry matter and plant height appeared at the seedling stage (early growth advantage). Plastic-covered ridge and furrow sowing supplemented with chemical reagents had significant positive effects on water collection and soil moisture retention. Improvement of soil moisture resulted into the increase of the photosynthetic rate, dry matter accumulation yield and WUE. The water-collecting and -retaining techniques can improve WUE and enhance crop yield. Correlation analysis demonstrated that the photosynthetic rate under the water-collecting and -retaining techniques was significantly associated with the soil moisture, but had no significant relationship with leaf chlorophyll content. Plasticcovered ridge and furrow sowing supplemented with chemical reagents increased the yield and WUE by 114% and 8.16 kg ha-1 mm-1, respectively, compared with the control; while without the chemical reagents the yield and WUE were 95% and 7.42 kg ha-1 mm-1 higher, respectively, than those of the control.

Key words: water use efficiency, Loess Plateau of China, plastic film mulch, drought-resistant agent, water-retaining agent

WEN Xiao-xia, ZHANG De-qi, LIAO Yun-cheng, JIA Zhi-kuan, JI Shu-qin. Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region[J]. Journal of Integrative Agriculture, 2012, 12(7): 1119-1128.

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Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

Effects of Water-Collecting and -Retaining Techniques on Photosynthetic Rates, Yield, and Water Use Efficiency of Millet Grown in a Semiarid Region

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