嫁接与生物防治对西瓜枯萎病防治效果的 研究

西瓜枯萎病是造成西瓜连作障碍的重要因子，生产上一般采用轮作、嫁接、生物防治、药剂
防治等。对连作时间不同的西瓜地块，进行不同砧木品种嫁接、生物农药、生物有机肥等防治试验。结果
表明，重茬时间长、枯萎病发生严重的西瓜地块，生物防治的防效不明显，只能在一定程度上起到抑制作用，
嫁接有明显防效，防治效果达100.0%；在重茬时间短、发病轻的西瓜地块，施用BIO 生物肥或采用嫁接
防效都十分明显。

Studies on Effects of Controlling Watermelon Fusarium Wilt by Grafting and Biological Control

Fusarium wilt is an important factor causing clogging in continuous cultivation of
watermelon〔Citrullus lanatus（Thunb.）Matsum. et Nakai〕．In production，we generally adopt crop
rotation，grafting，biological control and medical treatment to prevent this disease．This experiment
studied on many controlling methods，such as grafting on different stock varieties，using biological
pesticides and biological fertilizer，etc．at different plot of land during the period of watermelon
continuous cultivation．The results indicated that the effect of biological control was not obvious，if
the continuous cultivation period was long，and watermelon was planted in the fields where Fusarium
wilt occurred seriously. Biological control could only play an inhabiting role in dome extent，while the
grafted seedling had remarkable effect，the control effect is 100.0%．If the continuous cultivation
period was short，and the plot had slightly suffered from Fusarium wilt，it was efficient to apply BIO
biological fertilizer or grafting.