Study On Taxus Chinensis Var Seedling Raising Technology

In this study,seeds were collected from four natural distribution area of wild Taxus cuspidata in Jilin Province HeLong forestry bureau,and the seeds were dealt with seed germination,fertilization and transplanting.The results were as follows:(1)The T.cuspidata seeds has the character of physiological after-ripping,the appropriate treatment of the seed germination was 98%concentrated sulfuric acid soaked 2-3min + 100-200mg · L-1 GA3 soaked 48h + variable temperature stratificationI.(2)The order of the sowing method was:holes pawning>broadcasts pawning>layers pawning>sowing in the nutrition bowl(3)The optimum fertilization combination to promote the growth of plant height was 1500mg/L nitrogen + 300-450mg/L phosphorus + 200-400mg/L potassium;the best fertilization combination to promote the growth of ground diameter was 1500mg/L nitrogen ?450mg/L phosphorus + 200mg/L potassium;(4)The results of transplanting and forestation experiments showed that the seedling traits from Huanggou,Xujiadong and Hualazi were better than those from the Xinghuo Forest Farm.The plant height,ground diameter,average root length,branch number,cold resistance and disease resistance of those seedlings are all better than that of Xinghuo forest farm.Three excellent provenances were selected by the above tests,they are Huanggou Forest Farm,Xujiangdong Forest Farm and Hualazi Forest Farm.