砖肥对植烟土壤生化性状及烤烟根系发育的影响
Effect of Fertilizer Briquette on Biochemical Properties of Tobacco Planting Soil and Root Development of Flue-cured Tobacco
朱经伟 1马亚欢 2张恒 1王新修 3刘琼 4杨承 5刘文霖 1杨荣 3李琼香 3谢洪敏 3张云贵3
作者信息
- 1. 贵州省烟草科学研究院,贵阳 550081
- 2. 西北农林科技大学农学院,陕西杨凌 712100
- 3. 中国农业科学院农业资源与农业区划研究所/烟草行业生态环境与烟叶质量重点实验室,北京 100081
- 4. 贵州省烟草公司毕节市公司,贵州毕节 551700
- 5. 贵州省烟草公司铜仁市公司,贵州铜仁 554300
- 折叠
摘要
为探究砖肥对植烟土壤生化性状及烤烟根系发育的影响,以条施、穴施基肥为对照,分析常规砖肥、硅酸钾替代硫酸钾优化砖肥和砖肥施用位点及数量对土壤生化性状和烤烟根系生长发育的影响.结果表明,与条施、穴施基肥相比,常规砖肥处理土壤脲酶和蔗糖酶活性分别提高 51.1%和 32.7%,移栽 25d烟株根系活力提高 28.8%,但常规砖肥对土壤有效磷、速效钾的供给能力较低.采用硅酸钾替代 25%的硫酸钾优化砖肥配方,可有效避免养分的过度聚集,移栽 95d的烟株根系活力较常规砖肥提高 42.6%.增加砖肥的施肥位点数量能够进一步提高土壤速效钾含量、根际土壤蔗糖酶活性和微生物数量,烤烟根系平均直径增加 18.4%.综上所述,采用硅酸钾替代 25%的硫酸钾对砖肥配方进行优化,并将施肥位点数量增加至5个,能够显著改善植烟土壤的生化性状,提高烤烟根系活力,优化根系形态,促进烤烟健壮根系的形成.
Abstract
In order to investigate the effects of fertilizer briquette on biochemical characteristics of flue-cured tobacco planting soil and the development of flue-cured tobacco roots.Using strip and hole application of base fertilizer as controls,analyze the effects of conventional fertilizer briquette,potassium silicate replacing potassium sulfate to optimize fertilizer briquette and application sites and quantities of fertilizer briquette on soil biochemical characteristics and flue-cured tobacco root growth and development.The results showed that compared with strip and hole application of base fertilizer,using conventional fertilizer briquette for nutrient supply increased the activity of soil urease and sucrase,with an average increase of 51.1%and 32.7%,respectively.In addition,after 25 days of transplantation,the root activity increased by 28.8%,but the supply capacity of available phosphorus and available potassium was relatively low.Using potassium silicate instead of 25%potassium sulfate to optimize the formula of fertilizer briquette can effectively avoid excessive accumulation of nutrients,and the root vitality after 95 days of transplantation is 42.6%higher than that of conventional fertilizer briquette.Increasing the number of fertilization sites for fertilizer briquette can further improve the soil available potassium content,as well as the activity of sucrose enzymes and the number of microorganisms in the rhizosphere soil.It can also increase average diameter of flue-cured tobacco root by 18.4%.In summary,using potassium silicate instead of 25%potassium sulfate to optimize the fertilizer briquette formula and increasing the number of fertilization sites to 5 can significantly improve the biochemical characteristics of flue-cured tobacco planting soil,enhance its root vitality,optimize root morphology,and promote the formation of robust flue-cured tobacco roots.
关键词
砖肥/硅酸钾/施肥位点/土壤酶/土壤养分/根系/烤烟Key words
fertilizer briquette/potassium silicate/fertilization sites/soil enzyme/soil nutrient/root/flue-cured tobacco引用本文复制引用
基金项目
中国烟草总公司贵州省公司科技项目(2021XM22)
贵州省烟草公司毕节市公司科技项目(2022520500240186)
中国烟草总公司科技项目(110202102037)
出版年
2024
国家科技期刊平台
NSTL
万方数据