Dynamic Changes of Tobacco-growing Soil Nutrients and Enzymes After Application of Amelioration Materials

• 作者: Deyuan PENG Gexuan SU Jin CHEN Jingjing WU Qianping YAN Shuguang PENG Xiaohua DENG Yongjun LIU Yongsheng DENG Zhanghong CAO Zhenghua WANG
• 来源期刊: 农业生物技术:英文版
• 学科: 农学
• 关键词: Amelioration materials Soil pH Main nutrients of tobacco-growing soil Soil enzymes
• 年，卷（期）: 2020,（4）
• 页码范围: 87-91
• 页数: 5页
• 分类号: S15

摘要

[Objectives]This study was conducted to clarify the improvement effects of different soil amelioration materials such as lime,green manure and bio-organic fertilizer on acidic tobacco-planting soil.[Methods]The dynamic changes of soil pH,soil nutrients and enzyme activity were studied by applying lime,lime+green fertilizer,and lime+green fertilizer+biological organic fertilizer.[Results]①After the application of amelioration materials,the soil pH and available phosphorus content of tobacco-growing soil showed a stepwise change of first increasing and then decreasing,and became stable at 60 d after tobacco transplanting;the soil organic matter,alkali-hydrolyzable nitrogen and available potassium content showed a gradual change trend of"high-low-high";and the soil invertase and urease activity showed a gradual change trend of"low-high-low".②To 90 d after tobacco transplanting,the application of amelioration materials increased soil pH by 1.29-1.62 units,and increased organic matter content by 15.21%-20.86%,alkali-hydrolyzable nitrogen content by 6.83%-18.17%,available phosphorus content by 54.15%-217.85%,rapidly available potassium content by 11.42%-30.86%,soil invertase activity by 70.09%-18.93%,and soil urease activity by 64.07%-130.47%.③The combination of lime+green manure+alkaline microbial organic fertilizer had the best effect on the improvement of acidic tobacco-growing soil,and the effect of lime+green manure+acid microbial organic fertilizer on acidic soil was the second.[Conclusions]When applying lime,green fertilizer and alkaline bio-organic fertilizer should be applied to achieve sustainable improvement of strongly acidic soil.