当前位置: 首页 > 文章 > NaCl胁迫对葡萄幼苗根际pH值及营养成分的影响 植物营养与肥料学报 2008,14 (4) 814-818
Position: Home > Articles > Effects of NaCl stress on pH values and nutrient elements around rhizosphere of young grapevines Journal of Plant Nutrition and Fertilizers 2008,14 (4) 814-818

NaCl胁迫对葡萄幼苗根际pH值及营养成分的影响

作  者:
房玉林;宋士任;王华;陈书霞;史世梦
单  位:
西北农林科技大学葡萄酒学院;西北农林科技大学园艺学院;西北农林科技大学葡萄酒学院西北农林科技大学园艺学院
关键词:
葡萄幼苗;盐胁迫;根际土壤;矿质营养
摘  要:
采用多隔层根际培养的方法,研究了NaCl胁迫下赤霞珠葡萄幼苗根际土和非根际土的pH值以及主要营养成分的变化。结果表明,NaCl处理对赤霞珠葡萄幼苗的生长造成了不同程度的抑制。不同NaCl处理下,葡萄幼苗根际土壤pH均低于非根际土壤,各层土壤的pH随盐胁迫程度加深而增高;水溶性K+在根际含量较低,水溶性Na+和Ca2+在根际富集。非盐渍条件下,葡萄幼苗根际碱解氮增高,而在盐胁迫下下降。在4 g/kg NaCl胁迫下,葡萄根际有效磷降低,其它处理下升高;而水溶性Mg2+则相反。试验结果还表明,Na+的存在阻碍了根系对多种矿质营养的吸收和利用,影响了葡萄的正常生理活动,不同程度地限制了葡萄根系的生活力和吸收能力。在Na+的作用下,K+、Ca2+、Mg2+的迁移和吸收受到不同程度的影响,与对照相比,各层土壤中的几种离子的含量均有所变化。
译  名:
Effects of NaCl stress on pH values and nutrient elements around rhizosphere of young grapevines
作  者:
FANG Yu-lin1,SONG Shi-ren1,WANG Hua1,CHEN Shu-xia2,SHI Shi-meng1,ZHOU Xiao-ming1(1 College of Enology,Northwest A & F University,Yangling,Shaanxi 712100,China; 2 College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100,China)
关键词:
grapevine nursery;salt stress;rhizosphere soil,mineral nutrients
摘  要:
The changes in pH values and primary nutrient elements around rhizosphere soil and non-rhizosphere soil of Cabernet Sauvingon young grapevines under salt stress were studied by using rhizobox cultivation experiment.The results showed that pH values of rhizosphere soil were lower than non-rhizosphere soil under different salt stresses,pH values of each layer increased with salt stress.Water-soluble potassium ions were lowet,but water-soluble sodium ions and calcium ions were enriched in rhizosphere.Alkai-hydrolyzable nitrogen was enriched without salt stress,but decreased under salt stress.Available phosphorus decreased when stressed in 4 g/kg salt,and was enriched under other treatments.Water-soluble magnesium ion was enriched when stressed in 4 g/kg salt,and decreased under other treatments.The results indicated that sodium ion blocked the root system from absorbing and utilizing the mineral nutrients,affected normal physiological activities of young grapevines,and restricted root activity and absorption ability of young grapevines.With the effect of sodium ion,the transfer and absorption of potassium ion,calcium ion and magnesium ion were affected to different extents.Compared with control,the content of these ions changed in each layer.

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