Abstract:

The effects of different shading conditions on the growth and yield of Pinellia ternata were studied. The three treatments were the SZW-8 type shade net, the SZW-12-type shade net and the non-shading. The yield, grain number, weight and plant traits were investigated. The yield of SZB-8 type and HZW-12 type was 0.73 times, 1.82 times respectively lower than that of the non-shading. The grain number and weight were lower than that of non-shading. Plant height, stem height with the shade rate increased, but the leaf length, leaf width had nothing to do with shade rate. In the cool-temperate region of karst, no shading was the best condition for Pinellia ternata.