基肥施用方式对烤烟根系生长及根际微生态环境的影响

【目的】本文对江西烟区烟苗早生快发问题进行了研究。【方法】采用挖大穴施基肥、施用白云石粉和高碳基肥等措施改变根际土壤环境,研究了不同措施对烤烟根系生长发育及根际土壤微生态环境的影响。【结果】打大穴和施用穴肥能够增加烤烟根际土壤微生物菌群的数量,烤烟侧根数量明显增加,且主要分布在垂直垄面向下5~10和10~25 cm土层。施用白云石粉和高碳基肥均能使根际土壤pH值升高。【结论】根际土壤pH值在适宜范围内才能促进烤烟生长。推测根际土壤pH 7.5左右可能是烤烟根系生长是否受到抑制的分界点。...

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Published in西南农业学报 Vol. 30; no. 10; pp. 2284 - 2289
Main Author 李旭华;张海伟;叶为民;王玉胜;何宽信;邵雪莲;刘润生;管成伟;苑举民
Format Journal Article
LanguageChinese
Published 广东中烟工业有限责任公司,广东广州,510385%江西省烟叶科学研究所,江西南昌,330029%赣州市烟草公司瑞金分公司,江西瑞金,342500 2017
Subjects
土壤pH
微生物种群
根系生长
烤烟
穴肥
Soil pH
Nest-fertilizer
土壤pH
烤烟
根系生长
Root growth
微生物种群
穴肥
Microbial community
Flue-cured tobacco
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ISSN1001-4829
DOI10.16213/j.cnki.scjas.2017.10.021

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Summary:【目的】本文对江西烟区烟苗早生快发问题进行了研究。【方法】采用挖大穴施基肥、施用白云石粉和高碳基肥等措施改变根际土壤环境,研究了不同措施对烤烟根系生长发育及根际土壤微生态环境的影响。【结果】打大穴和施用穴肥能够增加烤烟根际土壤微生物菌群的数量,烤烟侧根数量明显增加,且主要分布在垂直垄面向下5~10和10~25 cm土层。施用白云石粉和高碳基肥均能使根际土壤pH值升高。【结论】根际土壤pH值在适宜范围内才能促进烤烟生长。推测根际土壤pH 7.5左右可能是烤烟根系生长是否受到抑制的分界点。
Bibliography:LI Xu-hua1 , ZHANG Hai-wei2 ,YE Wei-min1 ,WANG Yu-sheng1 ,HE Kuan-xin2 ,SHAO Xue-lian3 , LIU Run-sheng3 , GUAN Cheng-wei2 , YUAN Ju-min2 （1. China Tobacco Guangdong Industrial, Co. , Ltd. , Guagndong Guangzhou 510385 , China; 2. Tobacco Science Institute of Jiangxi Prov-ince ,Jiangxi Nanchang 330029, China; 3. Ruijin Branch Company of Ganzhou Municipal Tobacco Company, Jiangxi Ruijin 342500 , China）
Objective】This study aimed to solve the problems of fast growing after transplanting in Jiangxi flue-cured tobacco growing regions. 【Method】The effects of different cultural measures on the root growth and rhizosphere microenvironment of flue-cured tobacco were studied through changing basal-dressing application methods and applying dolomite and biochar fertilizer. 【Result】Nest-fertilizers application through punching big nests increased the amounts of microbial community in the rhizosphere soil. The numbers of lateral roots increased significantly and were mainly distributed in vertical ridges for 5-10 and 10-25 c
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2017.10.021