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西瓜忌连作,旱地需6～7年才能轮作,水田3～4年才能轮作。西瓜对土壤要求较严,而轮作期又太长,使适宜种植西瓜的地块越来越少。特别是北方西瓜大棚的发展,更迫切地要求解决西瓜种植中的重茬问题,因而嫁接是现在西瓜栽培必不可少的配套措施。 嫁接西瓜的优点是:克服重茬,避免了因重茬带来的减产甚至绝产问题,并能使西瓜高产稳产。
Watermelon avoid continuous cropland, dry land to be rotated 6 to 7 years, paddy fields 3 to 4 years to rotation. Watermelon on the soil more stringent requirements, and the rotation period is too long, so that suitable for planting watermelon plots less and less. In particular, the development of watermelon greenhouses in the north requires more urgent solutions to the problems of continuous cropping in watermelon cultivation. Therefore, grafting is now an indispensable supporting measure for watermelon cultivation. The advantage of grafting watermelon is: to overcome heavy cropping, to avoid due to cropping problems caused by the reduction of production or even absolute, and can make watermelon high and stable yield.