Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu

WANG Min-hua; ZHOU Jing; CUI Jian

Volume 26 Issue 1

Feb. 2009

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WANG Min-hua, ZHOU Jing, CUI Jian. Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu[J]. Journal of Zhejiang A&F University, 2009, 26(1): 17-21.

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WANG Min-hua, ZHOU Jing, CUI Jian. Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu[J]. Journal of Zhejiang A&F University, 2009, 26(1): 17-21.

Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu

1.
Agro-Tech Extension Center of Huangshan County， Huangshan 242700，Anhui，China;
2.
Red Soil Ecological Experiment Station，Chinese Academy of Sciences，Yingtan 335211，Jiangxi，China

Received Date: 2008-01-31
Rev Recd Date: 2008-09-17
Publish Date: 2009-02-20

Abstract

Red soil moisture makes an important role in the production of crop and fruit as one of the most limiting factors in the red soil region of China. Citrus is the main fruit in the region. The objective of this study was to explore the effects of red soil relative water content （RSWC） on leaves growth and nutrient accumulation of citrus in spring，further，to provide the theoretical foundation for economic irrigation of citrus production in red soil region of China. Mature satsuma mandarin trees（Citrus unshiu ‘Miyagawa Wase’） were selected as experimental materials and Frequency Domain Reflectometry（FDR） was used to monitor red soil moisture. And there were five red soil moisture treatments，which red soil water content accounted on 30%，45%，60%，75% and 90% of the maximum for water content in red soil field. The results showed that the leaf growth factors including the leaves area，the leaves perimeter and the leaves width all reached the maximum values，which were 12.25 cm2，13.84 cm and 3.19 cm，respectively，When RSWC was 75%.As for nutrition accumulation，soil moisture was advantageous to N accumulation when soil water stress was the right amount. P was positively and significantly（R2 = 0.944 3，P＜0.05） correlated with RSWC while no differences for K in leaves was found. When RSWC was below 30%，accumulations of calcium （Ca），magnesium （Mg），and iron （Fe） were negatively affected. In addition，there were no differences for N in between leaves and roots；however，P and K in leaves were less than in roots. Overall balance of leaves growth and nutrient accumulation，it was more beneficial for leaves growth when RSWC was about 75%. ［Ch，3 tab. 14 ref.］
- plant nutrition,
- soil moisture,
- Citrus unshiu,
- leaves,
- nutrition accumulation

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu

1. Agro-Tech Extension Center of Huangshan County， Huangshan 242700，Anhui，China;

2. Red Soil Ecological Experiment Station，Chinese Academy of Sciences，Yingtan 335211，Jiangxi，China

Received Date: 2008-01-31

Rev Recd Date: 2008-09-17

Publish Date: 2009-02-20

Key words:

Abstract: Red soil moisture makes an important role in the production of crop and fruit as one of the most limiting factors in the red soil region of China. Citrus is the main fruit in the region. The objective of this study was to explore the effects of red soil relative water content （RSWC） on leaves growth and nutrient accumulation of citrus in spring，further，to provide the theoretical foundation for economic irrigation of citrus production in red soil region of China. Mature satsuma mandarin trees（Citrus unshiu ‘Miyagawa Wase’） were selected as experimental materials and Frequency Domain Reflectometry（FDR） was used to monitor red soil moisture. And there were five red soil moisture treatments，which red soil water content accounted on 30%，45%，60%，75% and 90% of the maximum for water content in red soil field. The results showed that the leaf growth factors including the leaves area，the leaves perimeter and the leaves width all reached the maximum values，which were 12.25 cm2，13.84 cm and 3.19 cm，respectively，When RSWC was 75%.As for nutrition accumulation，soil moisture was advantageous to N accumulation when soil water stress was the right amount. P was positively and significantly（R2 = 0.944 3，P＜0.05） correlated with RSWC while no differences for K in leaves was found. When RSWC was below 30%，accumulations of calcium （Ca），magnesium （Mg），and iron （Fe） were negatively affected. In addition，there were no differences for N in between leaves and roots；however，P and K in leaves were less than in roots. Overall balance of leaves growth and nutrient accumulation，it was more beneficial for leaves growth when RSWC was about 75%. ［Ch，3 tab. 14 ref.］

Effects of red soil moisture on leaves growth and nutrient accumulation of Citrus unshiu

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

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