罗望子生长性能的研究幼苗适应不同的盐度和酸度

Khalil Ahmed
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摘要

农林业是受盐影响土壤的一种可行的土地利用办法,可确保对这一宝贵资源的有益利用。通过两年盆栽试验,评价了罗望子植株对不同盐度和碱度的耐盐性。治疗方法包括:T1 = ECe dS 1.17 m - 1 + SAR, 10.87, T2 = ECe 6 dS m - 1 + SAR, 25日,T3 = ECe 6 dS m - 1 + SAR, 35岁,T4 = ECe 6 dS m - 1 + SAR, 45岁的T5 = ECe, 8 d m - 1 + SAR, 25日,T6 = ECe, 8 d m - 1 + SAR, 35岁的T7 = ECe, 8 d m - 1 + SAR, 45岁,T8 = ECe、10 dS m - 1 + SAR, 25日,T9 = ECe 10 dS m - 1 + SAR, 35岁的T10 = ECe 10 dS m - 1 + SAR, 45。结果表明,在更高的盐度(10 dS - m-1)和碱度(SAR - 45)条件下,没有植株存活,植株完全停止生长并死亡。研究结束时成活植株的数据表明,盐度和碱度抑制了罗望子幼苗的生长变量,与对照(非胁迫)处理相比,盐度和碱度的升高导致罗望子株高降低3.52% ~ 82.47%,茎长降低1.53% ~ 84.61%,叶片数降低5.63% ~ 88.26%,分枝数降低7.44% ~ 90.77%。综上所述,罗望子幼苗在10 dS - m-1的盐碱度和35的盐碱度下均能耐受并存活。
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GROWTH PERORMANCE OF TAMARIND (Tamarindus indica L.) SEEDLINGS TO DIFFERENT LEVELS OF SALINITY AND SODICITY
Agroforestry is a viable land-use option of salt affected soils which ensure the remunerative use of this valuable resource. A two years pot study was carried out to evaluate salinity tolerance of tamarind fruit plant against different levels of salinity and sodicity. Treatments included were: T1 = ECe, 1.17 dS m-1 + SAR, 10.87, T2 = ECe, 6 dS m-1 + SAR, 25, T3 = ECe, 6 dS m-1 + SAR, 35, T4 = ECe, 6 dS m-1 + SAR, 45, T5 = ECe, 8 dS m-1 + SAR, 25, T6 = ECe, 8 dS m-1 + SAR, 35, T7 = ECe, 8 dS m-1 + SAR, 45, T8 = ECe, 10 dS m-1 + SAR, 25, T9 = ECe, 10 dS m-1 + SAR, 35, T10 = ECe, 10 dS m-1 + SAR, 45. Results revealed that no plant was survived at higher level of salinity (10 dS m-1) and sodicity (SAR 45) and complete cessation and mortality was observed in this treatment. Data of survived plants at the end of study showed that salinity and sodicity arrested the growth variables of tamarind seedlings and increasing levels of salinity-sodicity led a reduction of 3.52% to 82.47% in plant height, 1.53% to 84.61% in stem girth, 5.63% to 88.26% in number of leaves and 7.44 to 90.77 in number of branches over control (non-stress) treatment. Therefore, it was concluded that tamarind seedling can withstand and survive at salinity and sodicity level of 10 dS m-1 and SAR 35. 
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