A New Transplanting Approach to Enhance Salt Tolerance of Tree Saplings

编号 zgly0000329403

文献类型 期刊论文

文献题名 A New Transplanting Approach to Enhance Salt Tolerance of Tree Saplings

学科分类 220.1040;森林土壤学

作者 S.M.MEHDI  G.HASSAN  A.H.SHAH  M.SARFRAZ  M.SADIQ 

作者单位 SoilSalinityResearchInstitute(SSRI 

母体文献 Pedosphere;土壤圈: 英文版 

年卷期 2004,14(1)

页码 77-84

年份 2004 

分类号 S153  S714 

关键词 树苗  桉树  番石榴  盐份  移栽机具  传导性  pH值  吸附率 

文摘内容 A field investigation was conducted to determine the survival and growth rate of eucalyptus (Eucalyptus camaldulensis Dehn.) and guava (Psidium guajava L.) saplings planted in salt-affected soils. The field used was highly saline-sodic in nature with a wide variation in electrical conductivity of the saturated soil extract (ECe), pHs, sodium adsorption ratio (SAR) and gypsum requirement (GR). A randomized complete block design was utilized with three treatments, i.e. T1=plastic container bags totally removed, T2=only the plastic container bag's base removed and T3=plastic container bags un-removed. There were 34 and 8 plants in each block for eucalyptus and guava, correspondingly. The survival rates of eucalyptus and guava saplings were greater than 90%. In addition, gain in eucalyptus height was significantly higher in the T1 treatment where the bags were totally removed while for guava height the treatments were not significant. The gain in girth was not significant for both eucalyptus and guava saplings. With eucalyptus the taproot length was greater than the lateral roots while for guava the lateral roots were longer than the taproots. There was a decrease in the salinity-sodicity of the soils for the upper 30 cm depth under both types of vegetation, indicating that the salts had leached down to the B-horizon。