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前言齐嫩平原种植西瓜历史悠久,当前生产的主要问题是单产不高,总产不稳。而影响西瓜产量最重要的问题,就是病害严重,尤其是土传病害枯萎病,到目前为止国内的传统防治方法就是采取八年以上的轮作制。这对老瓜区轮茬年限太长困难很大,尤其保护地(大棚,小棚,地膜复盖)面积不断扩大,要求有固定的地块和水源,加之随着土地承包到户,面积由整化零,这样,八年的轮茬更难办到。因此迫切需要研究出适合当前
Preface The cultivation of watermelon in the Qinen Plain has a long history. The main problem in current production is the low yield and unstable output. The most important issue that affects the yield of watermelon is the serious disease, especially the soil-borne disease wilt. So far the traditional method of prevention and control in our country is to adopt the system of more than eight years. It is very difficult for the old crop rotation in the old melon area to be too long, especially the area of the protected areas (greenhouses, canopies and plastic film covers) has been constantly expanding, requiring fixed land plots and water sources. In addition, as the land is contracted to households, Zero whole, so that eight-year crop more difficult to do. Therefore, it is urgent to research suitable for the present