Abstract：The occurrence patterns of gourd seedling-laying caused by Pythium aphanidermatum and Rhizoctonia solani were almost the same. Most of the seedlings were infected by pathogens before the sprouts had come up out of the ground. The younger seedlings were more seriously infected. The disease occurred more seriously in the garden and greenhouse soil where there were more pathogens. Low temperature high or middle humid soil, Low light intensity, slightly high pH soil and deep soil cover over seeds were favourabl...
