期刊论文

Effect of Soil Conditioner on Root Vigor and Carbon Metabolism Characteristics of Rhizosphere Soil Microorganisms in Flue-cured Tobacco

中文

核农学报

1000-8551

2019

33

1

158-165

10.11869/j.issn.100-8551.2019.01.0158

湖南省科技计划项目(2015NK3002).

本校为第一机构

为探究土壤调理剂对烤烟根系微生态环境的影响,采用小区试验,研究土壤调理剂在不同施用量(0、1 500、3 000和4 500 kg·hm-2)水平下烤烟根系活力的动态变化及微生物碳代谢特征。结果表明,添加土壤调理剂3 000 kg·hm-2对烤烟生长发育中后期时的根系活力提高效应最大,移栽后60、90 d较对照分别提高了115.8%、85.3%。羧酸类、氨基酸类是烤烟根际土壤微生物利用的主要碳源,土壤调理剂作用下,羧酸类碳源在移栽后30 d并无显著变化,移栽后60、90 d,施用土壤调理剂3 000 kg·hm-2对羧酸类和氨基酸类碳源的利用率提高作用均最显著,且微生物多样性均一性指数也显著增加。在移栽后30 d,影响微生物碳代谢强...

In order to explore effect of soil conditioner on micro-ecological environmentin of flue-cured tobacco,a field experiment was conducted to investigate effects of 4 application levels (0,1 500,3 000 and 4 500 kg·hm~(-2)) on root vigor and carbon metabolism characteristics of rhizosphere soil microorganisms in flue-cured tobacco. The results showed that 3 000 kg·hm~(-2) of soil conditioner was the best in increasing root vigor in the medium and latter stages of flue-cured tobacco growth,which were improved by 115.8% and 85.3% than those of cont...