不同交联方式对微硅粉液体地膜降解性能影响

Study on Degradation Performance of Micro Silicon Powder Liquid Film by Different Crosslinking Methods

为研究微硅粉液体地膜的降解性,对比了两种交联膜的降解失重率,结构形貌和对土壤微量元素的影响,结果表明:预交联微硅粉液体地膜(预交联地膜,下同)在降解过程中具有良好的耐久性,不产生微孔结构,而直接交联微硅粉液体地膜(直接交联地膜,下同)耐久性较差,两种交联地膜在光照条件下具有较低的失重率,在实际应用中,微硅粉能够提高土壤中Si、K、Ca、Mg的含量,有助于植物生长。

In order to study the degradability of microsilica liquid mulch film,the weight loss rate,structure morphology and trace elements of two kinds of crosslinked membraneswere compared.The results showed that pre-crosslinked microsilica powder liquid mulch (pre-crosslinking mulch film,the same below ) had good durability in the degradation process,did not produce microporous structure,and the direct cross-linking microsilica liquid mulch film (direct cross-linked mulch film,the same below ) was poor in durability,and the two cross-linked mulch films were under light conditions,it had a low weight loss rate.In practical applications,micro-silica powder can increase the content of Si,K,Ca and Mg in soil and contribute to plant growth.