期刊论文

Decomposition Characteristics of Three Crop Straws and the Effects of Their Decomposed Liquids on Phytophthora nicotianae

中文

中国烟草科学

1007-5119

2021

42

01

33-39

10.13496/j.issn.1007-5119.2021.01.006

中国烟草总公司云南省公司科技项目（2018530000242017）； 广西科学技术厅项目（桂科AB16380165）； 国家重点研发计划课题（2017YFD0301503）；

本校为第一机构

针对南方常见的烤烟轮作体系,研究3种作物(烟草、油菜和水稻)秸秆的腐解特性及其腐解液对烟草疫霉菌的影响,以期为烟田秸秆的综合利用提供理论依据。采用尼龙网袋法研究了3种秸秆在2种土壤水分条件下的腐解率及养分释放规律,并通过人工制备3种秸秆腐解液,研究了其不同浓度对烟草疫霉菌菌丝生长和孢子囊产生的影响。结果表明,前期烟草秸秆和油菜秸秆腐解较快,但腐解率总体表现为水稻秸秆>油菜秸秆>烟草秸秆,各处理秸秆180 d累积腐解率均在55%以上。3种秸秆的养分释放速率均表现为钾>磷>氮,经过180 d的腐解,氮、磷、钾的释放率分别为60.65%~70.18%、 75.33%~84.81%及93.96%~97.34%。干湿交替处理的...

In view of the common flue-cured tobacco rotation system in Southern China,the decomposition characteristics of three crop straws(tobacco,rape and rice)and the effects of the straw decomposed liquids on Phytophthora nicotianae were studied in order to provide theoretical basis for comprehensive utilization of tobacco field straws.Simulation experiment was adopted by using nylon net bags to study the decomposition rates and nutrient release patterns of three crop straws under two soil moisture conditions,and the effects of different concentrations of decomposed liquids on hypha growth and spora...