期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2013

39

3

319-322

10.3724/SP.J.1238.2013.00319

中国烟草总公司湖南分公司重点项目

本校为第一机构

测定并分析烟秆拉拔力与拉拔位移、烟秆直径、土壤含水率、土壤紧实度之间的相互关系.结果表明:拉拔烟秆是一个拉拔力上升阶段和拉拔力下降阶段的综合作用过程,当土壤含水率较低(13.2％)、土壤紧实度较大(18.6 kg/cm2)时,烟秆拉拔位移为14 cm,拉拔力最大值为1 654 N;当土壤含水率较高(21.8％)、土壤紧实度较小(1 1.54 kg/cm2)时,烟秆拉拔位移为16 cm,拉拔力最大值为1 628 N.烟秆直径与起拔力之间呈正相关直线回归关系,相关系数为0.88,烟秆直径为26.1～38.3 rnm时,起拔力为551 ～1 840N；土壤含水率越大,起拔力越小；土壤紧实度越大,起拔力越大.

Mensurated and analyzed the relationship among the tobacco stem pulling force and pull-out displacement, tobacco stem diameter, rate of soil moisture, soil compactness. The results indicated that the pulling force and displacement curves reveal that the tobacco stem pulling is a comprehensive effect pulling force rising stage and the pulling force decreased stage, when the soil moisture content was low（13.2%）, the soil compactness was large（18.6 kg/cm2）, the pull-out displacement was 14 cm, the maximum pullout force was 1 654 N, when the so...