Chin J Plant Ecol ›› 2010, Vol. 34 ›› Issue (12): 1394-1403.DOI: 10.3773/j.issn.1005-264x.2010.12.005
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ZHOU Xiao-Bing1,2, ZHANG Yuan-Ming1,*(), WANG Sha-Sha1,2, ZHANG Bing-Chang1
Received:
2010-03-29
Accepted:
2010-06-23
Online:
2010-03-29
Published:
2010-12-28
Contact:
ZHANG Yuan-Ming
ZHOU Xiao-Bing, ZHANG Yuan-Ming, WANG Sha-Sha, ZHANG Bing-Chang. Combined effects of simulated nitrogen deposition and drought stress on growth and photosynthetic physiological responses of two annual desert plants in Junggar Basin, China[J]. Chin J Plant Ecol, 2010, 34(12): 1394-1403.
pH | 体积含水量 Volumetric water content (%) | 有机碳 Organic C (g·kg-1) | 总氮 Total N (g·kg-1) | 总磷 Total P (g·kg-1) | 总钾 Total K (g·kg-1) | 有效氮 Available N (mg·kg-1) | 有效磷 Available P (mg·kg-1) | 有效钾 Available K (mg·kg-1) |
---|---|---|---|---|---|---|---|---|
8.36 ± 0.16 | 7.74 ± 2.18 | 1.69 ± 0.55 | 0.19 ± 0.09 | 0.40 ± 0.04 | 10.94 ± 0.78 | 36.31 ± 9.44 | 6.31 ± 1.53 | 167.75 ± 20.72 |
Table 1 Physical and chemical characteristics of substrate soil (mean ± SD)
pH | 体积含水量 Volumetric water content (%) | 有机碳 Organic C (g·kg-1) | 总氮 Total N (g·kg-1) | 总磷 Total P (g·kg-1) | 总钾 Total K (g·kg-1) | 有效氮 Available N (mg·kg-1) | 有效磷 Available P (mg·kg-1) | 有效钾 Available K (mg·kg-1) |
---|---|---|---|---|---|---|---|---|
8.36 ± 0.16 | 7.74 ± 2.18 | 1.69 ± 0.55 | 0.19 ± 0.09 | 0.40 ± 0.04 | 10.94 ± 0.78 | 36.31 ± 9.44 | 6.31 ± 1.53 | 167.75 ± 20.72 |
物种 Species | 处理 Treatment | 根长 Root length | 根重 Root weight | 叶片数 Leaf number | 叶面积 Leaf area | 生物量 Biomass |
---|---|---|---|---|---|---|
涩荠 Malcolmia africana | 水分 water | 10.56** | 485.71** | 22.26** | 58.32** | 2 158.61** |
氮 N | 4.43* | 62.19** | 7.43** | 68.45** | 804.31** | |
水分×氮 Water × N | 0.77 | 11.77** | 5.29** | 21.31** | 235.69** | |
钩刺雾冰藜 Bassia hyssopifolia | 水分 water | 3.11 | 272.14** | 19.19** | 49.64** | 7 319.02** |
氮 N | 2.25 | 544.34** | 54.98** | 82.15** | 2 4217.89** | |
水分×氮 Water × N | 0.08 | 21.99** | 31.87** | 23.42** | 4 463.67** |
Table 2 Two-way ANOVA analysis of N and water treatment effects on plant growth
物种 Species | 处理 Treatment | 根长 Root length | 根重 Root weight | 叶片数 Leaf number | 叶面积 Leaf area | 生物量 Biomass |
---|---|---|---|---|---|---|
涩荠 Malcolmia africana | 水分 water | 10.56** | 485.71** | 22.26** | 58.32** | 2 158.61** |
氮 N | 4.43* | 62.19** | 7.43** | 68.45** | 804.31** | |
水分×氮 Water × N | 0.77 | 11.77** | 5.29** | 21.31** | 235.69** | |
钩刺雾冰藜 Bassia hyssopifolia | 水分 water | 3.11 | 272.14** | 19.19** | 49.64** | 7 319.02** |
氮 N | 2.25 | 544.34** | 54.98** | 82.15** | 2 4217.89** | |
水分×氮 Water × N | 0.08 | 21.99** | 31.87** | 23.42** | 4 463.67** |
Fig. 1 The root length, root weight, leaf number of Malcolmia africana and Bassia hyssopifolia under different water regimes (mean ± SD, n = 5). DS, drought stress; WW, well watered. Different letters indicate significance among treatments (p < 0.05).
Fig. 2 The leaf area, biomass, shoot/root (S/R) of Malcolmia africana and Bassia hyssopifolia under different water regimes (mean ± SD, n = 5). Notes see Fig. 1.
物种 Species | 处理 Treatment | 最大净光合速率 Max net photosynthetic rate | 叶绿素 Chlorophyll | 可溶性蛋白 Soluble protein |
---|---|---|---|---|
涩荠 Malcolmia africana | 水分 water | 148.18** | 17.76** | 6.85* |
氮 N | 69.02** | 59.05** | 51.36* | |
水分×氮 Water × N | 1.33 | 15.24** | 0.13 | |
钩刺雾冰藜 Bassia hyssopifolia | 水分 water | 1.97** | 2.54 | 84.34** |
氮 N | 23.38 | 201.16** | 60.16** | |
水分×氮 Water × N | 2.35 | 4.92** | 13.67** |
Table 3 Two-way ANOVA analysis for the effects of N and water treatment on physiological traits
物种 Species | 处理 Treatment | 最大净光合速率 Max net photosynthetic rate | 叶绿素 Chlorophyll | 可溶性蛋白 Soluble protein |
---|---|---|---|---|
涩荠 Malcolmia africana | 水分 water | 148.18** | 17.76** | 6.85* |
氮 N | 69.02** | 59.05** | 51.36* | |
水分×氮 Water × N | 1.33 | 15.24** | 0.13 | |
钩刺雾冰藜 Bassia hyssopifolia | 水分 water | 1.97** | 2.54 | 84.34** |
氮 N | 23.38 | 201.16** | 60.16** | |
水分×氮 Water × N | 2.35 | 4.92** | 13.67** |
Fig. 3 The maximum net photosynthetic rate (Pmax), chlorophyll (Chl), soluble protein (SP) of Malcolmia africana and Bassia hyssopifolia under different treatments (mean ± SD, n = 3). Different letters indicate significance of M. africana or B. hyssopifolia under different treatments (p < 0.05). CW, control + well watered; MW, medium N + well watered; HW, high N + well watered; CD, control + drought stress; MD, medium N + drought stress; HD, high N + drought stress.
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