荆农四号甜瓜的育成,主要由于有明确的选育目标,正确的选择了亲本。在杂交时,注意植株、子房及其部位的选择,并应用了回交和梯级杂交的方法。在选择时,根据需要性状,进行了株选、瓜选、籽选。同时在选育过程中,给予植株以优良的农业技术,并进行定向培育。因而获得了适应华中多雨潮湿地区的优良甜瓜新品种。 Jingnong IV melon breeding, mainly due to a clear breeding target, the correct choice of the parents. In the hybridization, pay attention to the selection of plants, ovaries and their parts, and the application of backcrossing and ladder hybridization method. In the choice, according to the traits required, conducted a selection of plants, melon election, seed selection. At the same time in the breeding process, giving plants with excellent agricultural technology, and directional cultivation. As a result, a new sweet melon adapted to rainy and wet areas in Central China was obtained.