西瓜最忌连作,因连作后,西瓜枯萎病易造成西瓜死秧死藤,严重影响产量和品质。目前国内尚无理想的抗枯萎病品种,利用现有药剂防治,奏效甚微,因此长期以来只好进行8年以上的轮作。近年来由于土地承包到户,专业户土地有限,瓜田面积逐年增加,进行长达8年的轮作已有较大困难,特别是老瓜区,保护地,这一矛盾更加突出,成为当前西瓜生产上亟待解决的主要问题之一。 Watermelon most avoidable, because of continuous cropping, watermelon wilt disease can cause dead watermelon dead vine, seriously affecting the yield and quality. At present, there is no ideal species for resistance to fusarium wilt, and the use of existing medicaments for prevention and treatment has not achieved much success. Therefore, it has long been necessary to carry out crop rotation for more than eight years. In recent years, due to land contracted to households, limited land for specialized households, melon fields increased year by year, for up to 8 years of rotation has been more difficult, especially the melon area, protected areas, the contradiction is even more prominent, become the current watermelon production One of the main problems to be solved urgently.