Studies On Dynamic Growth And Harvest Time Of Saposhnikovia Divaricata In Different Growth Years

Saposhnikovia divaricata is commonly used to traditional chinese medicine,and knownas Saposhnikovia divaricata[Saposhnikovia divaricata(Turc.)Schischk] is Pharmacopoeia.This species is cultivated in the eastern region of Gansu Province.In this research,seedsquality of Saposhnikovia divaricata was measured and analyzed,and based on different waysof sowing,the dynamic growth of different growth ages(annual,biennial and three-year-oldtransplanting) of Saposhnikovia divaricata was investigated.Meanwhile,the best harvestingperiod of Saposhnikovia divaricata growed two years was studied.These results provide ascientific basis and technical support for introduction and cultivation of Saposhnikoviadivaricata.The mainly results were as follows:1.The neatness of seeds of Saposhnikovia divaricata was95.55%,the average moisturecontent was7.87%,the average seed length was between4.63-5.65mm,the average with wasbetween2.10-3.18mm,the average thickness between1.01-1.14mm,and the average thousand-grainweight was between3.57-4.34g.Seeds germination test showed that sand rubbing treatmentwas the best way of germination treatment of Saposhnikovia divaricata due to indicators werehigher than other treatments.Such as germination time early,emergence and tidy,and the finalgermination rate was84%,germination potential was66%,germination index was21%.2.Different sowing methods have a greater impact on the growth dynamics of annualSaposhnikovia divaricata.The above-ground growth is vigorously with mixture furrowsowing treatment,its have reached the maximum in mid-September,such as plant heightwas25.33cm/strain,functional leaf area was121.2cm2/strain,average leaf fresh and dryweight was4.67g/strain and1.09g/strain.From late August,the roots growth rapidly,thevolume and weight increased.Until harvest,average fresh and dry weight reached3.08g/strains,0.76g/strain,average root length and diameter reached22.60cm/strains,4.59mm/strains.andseeding yield up10966.67kg/hm2,comparing with the control sediment flat planting,itsyield increase production25.68%,in actual production,and has a certain practicality.3.Transplanting biennial of Saposhnikovia divaricata to Sept.5,the most vigorous growthof the ground and the indicators have reached the maximum,leaf area was1851.53cm2/strain,leaf fresh and dry weight was62g/strain and13.85g/strain.Until harvest,average roots primary fresh and dry weight reached43.15g/strains,14.98g/strain, primary and lateralroots length and diameter reached41.78cm/strains,11.85mm/strains，average lateral rootsfresh and dry weight reached6.83g/strain,1.67g/strain.4.Three-year transplanting Saposhnikovia divaricata growing relatively strong is generally6-8months.From late June to start bolting and flowering,reaching delayed harvest inearlyAugust the average fruit fresh and dry weight is respective3.96g/strain and2.14g/strain.5.In late October harvest biennial Saposhnikovia divaricata H2O,total ash, acid-insolubleashes,ethanol-soluble extractives Prim-O-glucosylcimifugin and5-O-Methylvisammiosidecontent reached the specified value Pharmacopoeia,the content of alcohol-soluble extractof up to44.25%.Therefore,the effective components of biennial transplanting Saposhnik-ovia divaricata reaching the higheast in late October,and total content of Prim-O-gluc-osylcimifugin and5-O-Methylvisammioside up to0.32%,a large drying rate(28.35%),andhigher yield(15689.33kg/hm2),its the best harvesting time.