Canopy and leaf gas exchange of Haloxylon ammodendron under different soil moisture regimes

Gao, Song; Su, Pengcheng; Yan, Qing; Ding, Sunan

doi:10.1007/s11427-010-4013-5

Cited by 33 publications

(20 citation statements)

References 52 publications

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“…A reasonable irrigation amount and mulch can reduce the activity of nitrate reductase, increase the chlorophyll content of leaves, accumulate carbohydrates of vascular bundle sheath cells, and enhance the gas exchange capacity of maize leaves, and finally improve the photosynthetic carbonization ability of maize. Previous studies have found that too much or too little water is not conducive to photosynthesis [24]. Appropriate irrigation and biodegradable film coverage keep the soil moisture at an appropriate level, which is conducive to photosynthesis.…”

Section: Effect Of Irrigation Amount On G S and C I Of Degradable Filmentioning

confidence: 99%

Combined Effect of Different Amounts of Irrigation and Mulch Films on Physiological Indexes and Yield of Drip-Irrigated Maize (Zea mays L.)

Wang

Zhang

et al. 2019

Water

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Exploring the effect of irrigation on biodegradable film-covered drip-irrigated maize is essential for sustainable agricultural development in arid areas. These regions, like Xinjiang in China, are home to suitable irrigation and biodegradable films. Through field trials, four levels of irrigation, and two biodegradable films and one common polyethylene film were set up to study the effects of different treatments on the physiology, growth indicators, and yield of maize. The results showed that the effects of irrigation and biodegradable films on the photosynthetic index and fluorescence index of maize reached a very significant level (p < 0.01). The effect of single factor irrigation and biodegradable films on the photosynthetic index and fluorescence index of maize reached a significant level (p < 0.05). The photosynthesis index, fluorescence index, plant height, LAI (leaf area index) and yield of W3M3 treatment had the highest value, when compared with other treatments. The W1M1 treatment had the lowest value. The photosynthesis index, fluorescence index, plant height, LAI, and yield of the W3M2 treatment were second only to W3M3. In addition, the output was only 40 kg ha−1 less than W3M3. W3M2 has the best treatment effect from a perspective of sustainable agricultural development and efficient water saving; the optimal irrigation amount was 5625 m3 ha−1, induction period was 60 d, and thickness was 0.01 mm. The results of this study are of guiding significance for the promotion of the use of biodegradable films, search for suitable irrigation, and development of low-carbon agriculture.

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Section: Effect Of Irrigation Amount On G S and C I Of Degradable Filmentioning

confidence: 99%

Combined Effect of Different Amounts of Irrigation and Mulch Films on Physiological Indexes and Yield of Drip-Irrigated Maize (Zea mays L.)

Wang

Zhang

et al. 2019

Water

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show abstract

“…Since the mean stomatal resistance of single leaves cannot be measured directly due to the diversity of the vegetation, a value of 200 s/m was adopted for the oasis-desert transition zone based on prior works (Stannard, 1993;Allen et al, 1998;Liu and Zhao, 2009;Gao et al, 2010). Figure 2 shows some of the meteorological data of the study area.…”

Section: Penman-monteith Model (Et C )mentioning

confidence: 99%

Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China

Zhao

2014

J. Arid Land

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As a main component in water balance, evapotranspiration is of great importance for water saving and irrigation-measure making, especially in arid or semiarid regions. Although studies of evapotranspiration have been conducted for a long time, studies concentrated on oasis-desert transition zone are very limited. On the basis of the meteorological data and other parameters (e.g. leaf area index (LAI)) of an oasis-desert transition zone in the middle stream of Heihe River from 2005 to 2011, this paper calculated both reference (ET 0) and actual evapotranspiration (ET c) using FAO56 Penman-Monteith and Penman-Monteith models, respectively. In combination with pan evaporation (E p) measured by E601 pan evaporator, four aspects were analyzed: (1) ET 0 was firstly verified by E p ; (2) Characteristics of ET 0 and ET c were compared, while the influencing factors were also analyzed; (3) Since meteorological data are often unavailable for estimating ET 0 through FAO56 Penman-Monteith model in this region, pan evaporation coefficient (K p) is very important when using observed E p to predict ET 0. Under this circumstance, an empirical formula of K p was put forward for this region; (4) Crop coefficient (K c), an important index to reflect evapotranspiration, was also analyzed. Results show that mean annual values of ET 0 and ET c were 840 and 221 mm, respectively. On the daily bases, ET 0 and ET c were 2.3 and 0.6 mm/d, respectively. The annual tendency of ET 0 and ET c was very similar, but their amplitude was obviously different. The differences among ET 0 and ET c were mainly attributed to the different meteorological variables and leaf area index. The calculated K c was about 0.25 and showed little variation during the growing season, indicating that available water (e.g. precipitation and irrigation) of about 221 mm/a was required to keep the water balance in this region. The results provide an comprehensive analysis of evapotranspiration for an oasis-desert transition zone in the middle stream of Heihe River, which was seldom reported before.

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“…In Haloxylon ammodendron, a typical desert plant of the middle reach of the inland Heihe River Basin, the leaf and canopy photosynthetic rates and the photosynthetic capacity will peak when soil moisture content is maintained at (50 � 10)% of field capacity. If soil moisture increases or decreases, the photosynthetic capacity of H. ammodendron declines (Gao et al 2010). Meanwhile, based on the current field investigation and previous experiments, most desert species suffered severe water stress when soil moisture content was maintained at approximately 20% of field capacity.…”

Section: Experimental Design and Plant Speciesmentioning

confidence: 70%

“…Usually, the transpiration rate does not decrease significantly until the soil moisture falls below 50% of field capacity (Soundar, Vijayalakshmi, and Mariappan 2010). Figure 2 shows that the T under the FC 50% treatment in the middle reach was significantly higher than that under FC 20% in the same region and under these two water regimes in the lower reach; H. ammodendron in the middle reach had a strong ability to assimilate carbon (Gao et al 2010). FC 50% was considered to be a moderate moisture condition for desert plants in the middle reach, because no significant difference was observed in the need for water and water consumption of different plants (Figure 3).…”

Section: Discussionmentioning

confidence: 97%

Canopy and leaf gas exchange of Haloxylon ammodendron under different soil moisture regimes

Cited by 33 publications

References 52 publications

Combined Effect of Different Amounts of Irrigation and Mulch Films on Physiological Indexes and Yield of Drip-Irrigated Maize (Zea mays L.)

Combined Effect of Different Amounts of Irrigation and Mulch Films on Physiological Indexes and Yield of Drip-Irrigated Maize (Zea mays L.)

Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China

Partitioning evapotranspiration of desert plants under different water regimes in the inland Heihe River Basin, Northwestern China

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