摘要
为评估贵州省毕节市植烟土壤缺镁风险状况和采取相应改良措施,采集了贵州省毕节市植烟区耕层土壤样品,对土壤pH值及交换性钾、钙、镁含量进行检测,并对其空间分布规律进行了分析,应用植烟土壤缺镁风险评价防控措施体系对毕节市植烟土壤潜在缺镁风险进行了评估,并分析了可能导致缺镁的风险因素并提出了一些应对的生产改良措施。结果表明,毕节市植烟土壤pH值总体适宜至偏酸,交换性钾、钙、镁含量丰富或较丰富;风险评价发现毕节市有1/4的土壤存在高或极高的缺镁风险,有30.3%的样点需要进行土壤酸碱度改良,22.4%的样点需要叶面喷施镁肥。此研究对防范毕节烟区烟草缺镁风险具有重要的实践指导意义,可为其他烟区中量元素协调提供理论和实践借鉴。
In order to evaluate the risk status of magnesium deficiency in tobacco-planting soil in Bijie City,Guizhou Province and take corresponding improvement measures,soil samples of topsoil in the tobacco-planting areas of Bijie City,Guizhou Province were collected.Soil pH value and exchangeable potassium,calcium and magnesium contents were detected,and the spatial distribution law was analyzed.The potential risk of magnesium deficiency in tobacco-planting soil was evaluated by the application system of prevention and control measures for magnesium deficiency in tobacco-planting soil.The risk factors that may lead to magnesium deficiency were analyzed,and the production improvement measures were put forward.The results showed that the pH value of tobacco-planting soil in Bijie City was generally acidic,and the contents of exchangeable potassium,calcium and magnesium were abundant or relatively abundant.However,after risk assessment,it was found that one quarter of the soil in Bijie City had a high or extremely high risk of magnesium deficiency,30.3% of the sample sites needed to improve soil pH value,22.4% of the sample sites needed to use leaf spraying magnesium fertilizer.This study has important practical significance to prevent the risk of magnesium deficiency in Bijie tobacco-growing area,and can also provide theoretical and practical reference for the coordination of medium elements in other tobacco-growing areas.
作者
张龙
李彩斌
陈秀娥
陈德慧
黄兰
喻奇伟
彭华伟
顾姣
陈平
刘海伟
许耘祥
ZHANG Long;LI Cai-bin;CHEN Xiu-le;CHEN De-hui;HUANG Lan;YU Qi-wei;PENG Hua-wei;GU Jiao;CHEN Ping;LIU Hai-wei;XU Yun-xiang(Bijie Tobacco Company,Bijie 551713,China;Tobacco Research Institute,Chinese Academy of Agricultural Sciences/Key Laboratory of Tobacco Biology and Processing,Ministry of Agriculture and Rural Affairs,Qingdao 266101,China;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《江西农业学报》
CAS
2024年第8期64-69,86,共7页
Acta Agriculturae Jiangxi
基金
贵州省烟草公司毕节市公司科技项目(2021520500240048)
中国农业科学院科技创新工程(ASTIP-TRIC03)。
关键词
镁
评价指数
烟区
农田
耕层
Magnesium
Evaluation index
Tobacco-growing area
Farmland
Tillage layer
