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| DOI：10.13522/j.cnki.ggps.20190067 |
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| Effects of Water and Fertilizer Reduction on Yield, Quality and Incidence of Verticillium Wilt in Continuous Cropping |
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MIAO Qisong, GUANG Jianfang, SHAO Xiaohou, LI Ying, BO Guangli, TANG Maohua, WEI Yougang, ZHANG Yanyan
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1. Hohai University, Nanjing 210098, China; 2. Nanjing Vegetable Science Research Institute, Nanjing 210095, China
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| Abstract: |
| 【Objective】In order to improve the yield and quality of continuous cropping of eggplant in the high-incidence area of Verticillium wilt, and to reduce the incidence and disease index of Verticillium wilt.【Method】In the plastic greenhouse, we studied the growth, yield, quality, rhizosphere microorganisms and the incidence of verticillium wilt and disease index of the continuous cropping of eggplant by water and fertilizer reduction (80%, 70%, 60%, 50%, 40% of conventional irrigation and fertilization).【Result】With the decrease of water and fertilizer, the number of micro-sclerotia of Verticillium dahliae in the rhizosphere of eggplant, the disease index and incidence of Verticillium wilt decreased. Compared with other treatments, the number of micro-sclerotia of Verticillium dahliae in the rhizosphere of eggplant treated with 50% water and fertilizer was not significantly increased compared with that before planting, and the disease index and incidence rate of Verticillium wilt were the lowest. The growth condition and fruit traits of the eggplant treated with 50% water and fertilizer were the best, and the yield and quality were the highest. The number of harmful fungi in the rhizosphere decreased, and the number of bacteria and actinomycetes increased.【Conclusion】Therefore, in the area where the disease of eggplant verticillium is more serious, halving the amount of water and fertilizer can be used to reduce the incidence of facility continuous eggplant verticillium wilt and maximize the yield and quality. |
| Key words: verticillium dahliae; micro-sclerotia; drip irrigation; water and fertilizer reduction, continuous eggplant |
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