1推广应用杂交种富裕县棚室蔬菜生产从1983年开始已有15年的历史,现在已发展到436hm~2,棚室内所栽培的品种都以当地的主栽品种为主,如黄瓜品种有长春密刺、新泰密刺等常规品种,这些品种具有耐低温、耐高温、喜肥水,主蔓结瓜,节间短、瓜码密、抗枯萎病等优点。但近几年,这些常规品种混杂退化严重,对霜霉病抗性降低,产量不断下降, 1 promote the use of hybrids Phytophthalmus greenhouse vegetable production since 1983 has been 15 years of history, has now grown to 436hm ~ 2, greenhouse cultivated varieties are mainly local varieties, such as cucumber varieties have Changchun sting, Xintai stab and other conventional varieties, these varieties have low temperature, high temperature, like fertilizer, the main vine knot melon, internodes short, melon code dense, resistance to blight and so on. However, in recent years, these conventional varieties have become seriously mixed and degenerated, the resistance to downy mildew is reduced, the yield is declining,