Effects of soil improvement measures on soil microecology and the man-agement of Fusarium wilt in watermelon seedlings
CHEN Zibiao
YI Licong
LI Qingke
ZHOU Wei
WANG Yunqiang
WU Na
JIAO Chunhai
XIAO Bo
DAI Zhaoyi
Abstract：Fusarium wilt(Fusarium oxysporum f.sp.Niveum(FON))is one of the most serious diseases in watermelon production.This study aimed to evaluate the effect of different soil improvement methods in controlling watermelon fusarium wilt.The cultivation substrate containing FON conidia(race 1)was subjected to improve using high temperature,water-logging,and microbial agent addition in greenhouse,and then fusarium wilt incidence of watermelon seedlings,soil nutri-ent levels,soil enzyme activities,and microbial community diversity were analyzed.The results showed that high temper-ature treatment reduced some soil enzyme activities,however,significantly reduced the fusarium wilt incidence,which dropped to only 14.13％,and increased the abundance and diversity of soil fungi.After waterlogging treatment,the wilt incidence was significantly reduced,soil nutrients and soil enzyme activities were also reduced,but soil bacterial abundance was increased.The addition of Bacillus subtilis and Trichoderma harzianum agents improved the content of soil available nutrients,soil enzyme activities and the abundance and diversity of soil bacteria and fungi,however,had barely effect on wilt control.The findings of this study revealed the effects of different soil improvement methods on wa-termelon fusarium wilt control and soil microecological environment,and provided theoretical basis for overcoming the obstacles of continuous cropping in watermelon production.
Keywords：Fusarium wiltSoil improvementSoil enzyme activityMicrobial diversity
Publication Date：2023-12-05
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 16-25 )