Effects of Different Shade Treatments on the Growth, Yield and Quality of Piniella ternate

In order to illuminate the difference of agronomic traits, yield and quality of Piniella ternate in highly shade, 4 treatments with different shade (0, 65%, 75%, 85%) were designed and determined the morphological indexes, yield and alkaloid, polysaccharide and protein content.The results showed that (1) The shade treatment was beneficial to extension of growth period. (2) The higher shade intensity was, the mone obvious yield-increasing effect was. 85% shade treatment increased 35.7% yield compared with full exposure. (3) The shade intensity was higher, the medicinal composition of protein, polysaccharide and total alkaloid content were declining. The order was 65% shade treatment 75% shade treatment full light 85% shade treatment.Therefore,it's suggest using 65% or 75% black shade net to cultivate P. ternate through comprehensive analysis of change of morphological indexes, yield and three component content.