【摘要】 2000～2001年在嘉兴的试验研究表明大蒜与瓜类轮作辅以休闲明显地减轻了瓜类枯萎病的危害,发病率由瓜类连作时的50%下降到10%。土壤中(干土)病原菌孢子的存活量也由瓜类连作时的14.1×104cfu/g降低到1.2×104cfu/g。同时室内抑菌试验表明,大蒜能够明显抑制病原菌菌丝的生长,5种浓度3种浸提时间的大蒜浸提液中以浸提时间为1d浓度在25g/L的浸提液对菌丝生长的抑制效果最好,达72%;浸提7d浓度为1.56g/L的浸提液抑菌效果仅为20%。因此为减轻瓜类枯萎病的损失,提倡瓜类与大蒜作物轮作并适时休闲。更多还原

【Abstract】 Melon rotation with garlic and avail able fallow significantly reduced s everity of fusarium wilt and the dise ase incidence decreased from 50%to 10%based on the experiment in Jiaxing during 2000～2001.The lab experiment showed that t he garlic ro-tation also significantly reduced t he amount of chlamydospore of Fusarium oxysporum f.sp.cucumerinum in the soil from 14.1×10 4 cfu /g to 1.2×10 4 cfu /g.It also showed that the mycelia were markedly inhibited by garlic.Five concentrations with 3extracti ng time of garlic extract were evaluated for mycelium development.The extract of 25g /L with 1d extraction showed hig hest inhibiting rate of the mycelium(72%)and the extract of 1.56g /L with 7d extraction was lowest(20%).It suggests that to lessen loss of me lon due to the fusarium wilt of melon should rotate with gallic crop.更多还原