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Title:: Effect of Different Aspects on Nitrogen Content,Growth and Yield of Pseudostellaria heterophylla

Author(s):: ZENG Weijun1; CAO Guofan1; LI Jinling1; 2; LIU Bangyan1; ZHAO Zhi1; 2; WANG Hualei1; 2; (1.College of Agricultural,Guizhou University,Guiyang,Guizhou 550025；2.Guizhou Key (Engineering) Laboratory of Medicinal Plant Breeding and Planting,Guiyang,Guizhou 550025)

Keywords:: aspect; Pseudostellaria heterophylla; nitrogen content; growth; yield

Abstract:: Pseudostellaria heterophylla root was used as the test material.Pseudostellaria heterophylla was planted in different slope directions (ES 19°,WS 46°,WN 76°,TOP).The effects of different slope orientations on nitrogen content,growth and yield of Pseudostellaria heterophylla were studied.The results showed that the nitrogen content of Pseudostellaria heterophylla in the early stage of growth (April) was the fastest,which was 1.22 g·kg-1·d-1，it had strong nitrogen utilization ability,and had more mature leaves in its high growth period (June),higher underground dry quality per plant,stronger photosynthesis ability and stronger potential for yield formation.The yield of Pseudostellaria heterophylla under WS environment increased by 44.16% and 47.08%, respectively,compared with that of TOP and WN.In the indexes of the middle and upper diameters,the single dry weight of the Pseudostellaria heterophylla,the long and single-parameter dry weights of the medium,and the long commodity grades of the lower,the Pseudostellaria heterophylla in the WS environment had a comparative advantage.There were differences in nitrogen content,growth and yield of Pseudostellaria heterophylla from different slopes.Comprehensive consideration of WS environment was relatively suitable for the growth and yield of Pseudostellaria heterophylla.