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| Effects of Alkaline Soil Ameliorant on Growth and Fusarium Wilt Control of Potted Cucumber |
| LI Hui1，LI Nai-hui1，CUI Wen-jing2，YIN Jun-hui2，CHEN Qing2，WU Feng-zhi 1* |
1College of Horticulture and Landscape Architecture，Northeast Agricultural University，Harbin 150030，Heilongjiang，
China；2College of Resources and Environmental Sciences，China Agricultural University，Beijing 100193，China |
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Abstract The occurrence of fungal diseases induced by continuous cropping in protected field was closely
related to the changes in soil physichemical properties．Applying alkaline soil ameliorant could reduce the
damage of soil-borne diseases in protected fields of acidified soil．Taking protected field soil with 25 years’
continuous cropping on cucumber as test soil，and through pot experiment，this study compared the effects
of 2 kinds alkaline soil ameliorant，including 2.5 g · kg-1 of potassium humate（pH 8.5，HA）and fertilizer
of calcium silicon magnesium potassium（pH 9.96，SiCa）on cucumber growth and controlling Fusarium
wilt．The results showed that these 2 kinds of ameliorant，HA and SiCa had remarkbly increased the soil
pH by 0.10 and 0.24 unit，respectively，comparing with no application of ameliorant treatment；promoted
cucumber seedling growth；the effects of controlling cucumber Fusarium wilt had reached 45.8% and 51.3%，
respectively．Application of these 2 ameliorants had also significantly improved the soil exchangeable
potassium contents．Compared with HA，SiCa performed more outstanding effects in promoting cucumber
growth and inhibiting cucumber Fusarium wilt．
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Received: 30 January 2020
Published: 04 May 2020
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