Abstract:

The domesticating technology of Picrorhiza scrophulariiflora Pennell was studied in order to provide theoretical bases for the artificial cultivation. The single-factor tests were usedt to study the effects of cultivating measures such as planting years, shading and plastic mulching on the growth of P. scrophulariiflora; by using orthogonal design to study the effects of density, fertilizer, harvesting-time on the output of P. scrophulariiflora. The suitable cultivating measures were proposed. The suitable cultivating period for cutting multiplication was 2-3 years. Fitting shading and black-plastic mulching could increase the survival percentage and yield of P. scrophulariiflora. The most suitable cultivating measures for high-yielding were as follows: density 20 cm×30 cm, farmyard manure 30000 kg plus compound fertilizer 600 kg per hectare; fertilizing method base-fertilizer 1/2 and after manuring 1/2, harvesting time in October. The critical factors affecting the yield were density and fertilizer amount.