西葫芦种子发育从开花到成熟需７０ｄ（天）左右，山西省中北部无霜期短，一般制种多限于春茬。本试验通过夏季遮阳，秋末覆盖地膜，适期播种以避开病害高峰等措施，在秋季加代繁种，取得了较好的效果。播种期分别为７月２５日、８月５日、８月１５日、８月２５日，在高温... Zucchini seed development from flowering to maturity to be 70d (days) or so, central and northern Shanxi frost-free period is short, the general production is limited to spring stubble. In this experiment, shading was covered in summer, covered with plastic film in late autumn, and sowing in order to avoid the peak of diseases. In the autumn, more seeds were added and better results were obtained. Seeding period were July 25, August 5, August 15, August 25, at high temperature ...