醋渣覆盖对德州地区盐渍土理化性质和樱桃幼苗地上部生长的影响

Effects of Vinegar Residue Mulching on Physical and Chemical Properties of Saline Soil and Aboveground Growth of Cherry Seedlings in Dezhou

德州市是我国北方土壤盐碱化和次生盐渍化分布较为典型的地区之一,目前樱桃种植上存在土壤盐分高、碱性强等障碍因素,严重影响樱桃生长和产量。以德州地区栽植面积较大的3个樱桃品种(美早、萨米脱、布鲁克斯)为试材,在盐渍土(含盐量0.3%~0.4%)樱桃园土壤表面撒施覆盖醋渣(醋厂的废弃物) 30 t/hm^(2),以不覆盖醋渣为对照,研究了醋渣覆盖对樱桃园盐渍土壤理化性质和樱桃幼苗地上部生长的影响。结果表明:醋渣覆盖可显著提高土壤含水量,明显降低土壤含盐量,但对土壤酸碱度影响不大;显著促进樱桃幼苗地上部生长和生物量积累。在德州地区,醋渣覆盖是一种有效改良盐渍土性状、促进樱桃幼苗地上部生长的好方法。

Dezhou is one of the typical areas of soil salinization and secondary salinization in north China.At present,there are obstacles such as high soil salinity and strong alkalinity in cherry planting,which seriously affect cherry growth and yield.Three cherry varieties‘Tieton’‘Samitot’and‘brooks’with large planting areas in Dezhou were used as the test materials,and 30 t/hm^(2) vinegar residue(waste from vinegar factory)was sprayed and covered on the soil surface of cherry orchard in saline soil(0.3%-0.4%salt content).The effects of vinegar residue mulching on the physical and chemical properties of saline soil and the aboveground growth of cherry seedlings were studied compared with those without covering vinegar residue.The results showed that vinegar residue mulching could significantly increase soil water content and significantly reduce soil salt content,but had little effect on soil pH value,and significantly promote the growth and biomass accumulation of cherry seedlings.In Dezhou,vinegar residue mulching is a good way to effectively improve the properties of saline soil and promote the aboveground growth of cherry seedlings.