Effect Of Three Kinds Of Substrate On Soil Nutrients And Ginseng Yield And Quality In Farmland

Soil fertility is the main factor that affects the yield and quality of ginseng.The low organic matter content in farmland,poor fertility,and many diseases in Yanbian area,these matters seriously restricts the development of ginseng industry.In this study,based on the farmland soil in Chaoyangchuan,the orthogonal experiment was designed towards three different modified substrates(green manure,organic manure,and trace element fertilizer)with L16(45)in different proportions,which aims to find out suitable fertilizer application rate for ginseng growth.The main results are as fellow.The influence of these three kind manures towards the contents of soil organic matter and phosphorus is:organic manure>green manure>trace element fertilizer,the influence towards the content of soil nitrogen is:green manure>organic manure>trace element fertilizer,there is no big difference towards soil potassium.In conclusion,the better fertilizer application rate is 4kg green manure,2kg organic manure,and 50g trace element fertilizer per square meter was needed.The fertilizer application rate that maximizes the root weight of ginseng and other root traits perform well is 4kg green manure,2kg organic manure,and 150g trace element fertilizer per square meter was needed.Under this rate,the predicted root weight of ginseng is:within 95%confidence interval,the avearage root weight of ginseng is 20.39 ± 1.234g.The influence of these three kind manures towards the content of ginsenoside is:organic manure>green manure>trace element fertilizer,the fertilizer application rate that affect the content of ginsenoside most is 6kg green manure,2kg organic manure,and 100g trace element fertilizer per square meter was needed.Under this rate,the predicted ginsenoside content is:within 95%confidence interval,the avearage ginsenoside content is 27.69 ± 0.447mg/g.