杨木BECMP质育苗钵自然降解的研究

为了研究自然降解对挤压法漂白化机浆(BECMP)质育苗钵强度和钵体剩余量的影响及降解后对土壤的改良程度,采用自然条件降解,研究了杨木BECMP质育苗钵的降解规律和降解后对土壤的改良效果。结果表明:杨木BECMP质育苗钵在降解40d后强度下降较快,而钵体剩余量在30d前减少较快,与废纸泥炭育苗钵相当。钵体降解后土壤孔隙率从35.69%增加到40.86%;土壤含水率从9.19%增加到12.28%。实验表明BECMP质育苗钵具有较好的可降解性,降解前期强度保持较好,对土壤结构有一定的改良作用。

A study on natural degradation on seedling container made of poplar BECMP

In order to make the effect of strength of seedling container and influence of residual mass of seedling container and the improving degree on soil, the degradation and the improving degree of soil after degradation were studied, through the process of natural degradation on seedling container made of poplar bleached extruder chemi-mechanical pulp （BECMP）. The results show that the strength of seedling container made of poplar BECMP decreases seriously after degradation for 40 days, while the residual volume of the seedling container reduced heavily after 30 days, as well as seedling container made of waste paper and sedge peat. After the seedling container of BECMP degraded completely, the soil porosity is added up from 35.69% to 40.86%, soil moisture is added up from 9.19% to 12.28%, which indicate that the container of BECMP has a good biodegradability, and the seedling container made of poplar BECMP can kcep high strength during prophase of degradation, and finally the soil structure can be ameliorated.