摘要
采用测定抗张强度和重量变化的方法来衡量地膜在土壤中的降解性能 ,结果表明 ,埋在土壤中 6周后 ,重量损失达 67.84% ,已无法测得其抗张强度。7周后地膜与土壤颗粒粘结在一起 ,手触后碎裂成小块分散在土壤中 ,最终完全降解。借助扫描电镜 。
In this paper, the degradation performance of the mulch sheet in the soil has been scaled through the loss of the tensile strength and the weight. The results show, after being buried in the soil for 6 weeks, the loss of weight reached 67.84%. At the time, the tensile strength could not be tested. After 7 weeks the sheet connects with the soil, and can be smashed into very small pieces when touched by hands, this mulch sheet is entirely degradable at last. The change of the surface and internal structure has been observed by electron microscope.
出处
《广西轻工业》
2003年第1期10-13,共4页
Guangxi Journal of Light Industry
基金
国家教育部"高等学校骨干教师资助计划"( 2 62 0 )
广西大学科研发展基金资助
关键词
甘蔗渣
地膜
降解性能
Bagasse,Mulch sheet,Degradation performance
