3种落叶树种苗木失水及电特性与栽植成活率间的关系初探

Study on Relationship between Water Loss,Electrical Characteristics and Planting Survival Rate in Three Deciduous Trees Species Seedling

为研究苗木失水以及电阻值对成活率的影响及其相互关系,对紫穗槐、红柳、柠条的1年生苗木进行晾晒,测定不同晾晒时间下苗木含水量、电阻值及栽植成活率,分析它们间的相关关系。结果表明,随着晾晒时间的延长,含水量减小、失水率增大、电阻值增大,苗木栽植成活率显著下降。本试验所用紫穗槐、红柳、柠条的1年生苗木栽植成活率为40%时的苗木含水量与电阻值分别为2.82g、8.45g、0.44g和32.75MΩ、1.86MΩ、19.82MΩ。

By exposing seedlings ofCaragana korshinskii,Tamarix ramosissima and Amorpha fruticosa into outside condition without root protection,testing the seedling water content,resistance value and planting survival rate of the seedling exposed outside with different duration time,the paper studied the relationship between water loss,resistance value and planting survival rate of three tree species’seedlings.The result showed that with the increasing of duration time of the seedling exposed in the air,the water content and the planting survival rate of the seedling reduced,but the accumulate of seedlings’water loss and the resistance value of the seedling increased.When the planting survival rate ofAmorpha fruticosa,Tamarix ramosissima,Caragana Korshinskii seedling was 40%,the water content and the resistance value for three tree species were 2.82 g,8.45 g,0.44 g and 32.75 MΩ,1.86 MΩ,19.82 MΩ respectively.