CAJ | 학술논문

将中性盐NaCl、Na_2SO_4和NaHCO_3、Na_2CO_3两种碱性盐按不同比例混合,模拟出30种与天然盐碱土壤相似的条件,进行野生地肤种子发芽试验和幼苗生长情况检测等7项指标,结果表明:在混合盐碱胁迫作用下,地肤种子发芽受到明显抑制,发芽率、发芽势、发芽指数等指标呈下降趋势,并随盐碱度递增,下降程度逐渐增大,高盐高碱效应较单独高盐或高碱作用大;幼苗存活率和相对含水量在不同处理组间均呈下降趋势,而MDA和可溶性糖含量则随着盐碱度的升高逐渐上升,其中可溶性糖含量在低盐浓度(50、100 mmol/L)或低pH条件下,增加幅度小于高盐浓度(200、250 mmol/L)或高pH,两者具有明显的协同作用.
장중성염NaCl、Na_2SO_4화NaHCO_3、Na_2CO_3량충감성염안불동비례혼합,모의출30충여천연염감토양상사적조건,진행야생지부충자발아시험화유묘생장정황검측등7항지표,결과표명:재혼합염감협박작용하,지부충자발아수도명현억제,발아솔、발아세、발아지수등지표정하강추세,병수염감도체증,하강정도축점증대,고염고감효응교단독고염혹고감작용대;유묘존활솔화상대함수량재불동처리조간균정하강추세,이MDA화가용성당함량칙수착염감도적승고축점상승,기중가용성당함량재저염농도(50、100 mmol/L)혹저pH조건하,증가폭도소우고염농도(200、250 mmol/L)혹고pH,량자구유명현적협동작용.
The seeds of wild wancomponents (Kochia scoparia (L) Schrad) were tested under 30 kinds of mixed salt solutions composed of NaCl,Na_2SO_4,NaHCO_3,Na_2CO_3 at different proportions of salinity and alkalinity similar to natural saline-alkali soil.Seven indexes such as germination rate were determined.The results showed that the germination capability of wild wancomponents seeds was restrained obviously under complex saline-alkali stress.Complex saline-alkali stress decreased germination rate,germination energy and germination index.With saline-alkali concentration increasing,the trend became more obvious.The mixed effect of high saline-alkali stress was much stronger than that of high salt stress or high alkali stress respectively.The survival rate and relative water content decreased among all the six different treated groups,but MDA and soluble sugar content increased gradually with saline-alkali degree increasing,and increasing range of soluble sugar under 50,100 mmol/L or low pH was lower than 200,250 mmol/L or high pH.So it played obvious cooperation role between saline and alkali stress.