香根草·苜蓿和三叶草对土壤盐分的影响

[目的]为了比较香根草、苜蓿和三叶草对土壤盐分吸收能力的优劣。[方法]采用不同等级的NaCl溶液或K2CO3溶液,定期定量浇灌栽培在同质地土壤上的香根草、苜蓿和三叶草。通过5个月试验研究,分析香根草的成活率、分蘖率和香根草、苜蓿和三叶草的生物量积累率及植株体内的盐分含量,并比较了香根草、苜蓿和三叶草吸收土壤中盐分的质量和能力。[结果]香根草、苜蓿和三叶草都对土壤中盐分有吸收能力,且苜蓿对土壤盐分吸收能力最强,香根草对土壤盐分吸收能力次之,三叶草对土壤盐分吸收能力最弱。[结论]香根草、苜蓿和三叶草对土壤中盐分的吸收能力与土壤盐度有关,同时对土壤中盐分的吸收是有选择性的。

Influence of Veliveria zizanioides,Alfalfa and Clover on Soil Saliniazation

[Objective]The research aimed to contrast the ability of the salinity absorbancy of Veliveria zizanioides,alfalfa and clover from the soil.[Method] Veliveria zizanioides,alfalfa and clover that grew in the same soil were irrigated regularly with the different rank NaCl solution or K2CO3 solution.The observation was carried out for five months.The introduction survival rate,the minute tiller rate,the biomass accumulates rate and the salt content in adult plant of Veliveria zizanioides,alfalfa and clover were analyzed.And the salinity quality and ability were contrasted.[Result] The salinity absorbancies of Veliveria zizanioides and alfalfa from the soil were strong.And that of alfalfa was stronger than that of Veliveria zizanioides,but the salinity absorbancy of clover from the soil was weak.[Conclusion] The salinity absorbancy of Veliveria zizanioides,alfalfa and clover from soil was related with the salinity content of soil,and the salinity absorption from soil was selective.