实践经验证明:稻田地改种西瓜,利弊各半。有利条件是稻田地有机质含量高、地力强,危害西瓜的病原菌含量少,发病轻;不利因素是土壤牯重、含盐量高、整地困难,播种出苗难度大,前期不易发苗,所以稻田改种西瓜必须把好两大关。 一、选地育苗关 要选择地势较高、含盐量相对较低的地块。播前2-3天耕地,过早易跑墒。若土壤过于干旱,应于耕地 Practical experience shows that: paddy fields to change the watermelon, the pros and cons of half. Advantageous conditions are the high content of organic matter in paddy field, strong soil, harmful to watermelon pathogens less incidence of light; unfavorable factors are heavy soil, salt content, difficult site preparation, seedling emergence difficult, early seedling is not easy, so the rice field change Watermelon must be a good two mark. First, the selection of seedling off to choose a higher terrain, the relatively low salinity of land. 2-3 days before sowing arable land, premature easy entropy. If the soil is too dry, it should be cultivated