Nutrient properties and fertilizer requirement regularity of Glycyrrhiza uralensis Fisch

The nutrient properties and fertilizer requirement regularity of Glycyrrhiza uralensis Fiseh were studied．The results show that the proportional application of N，P，K，and Ca Call improve the yield of Glycyrrhiza uralensis Fisch，and the average absorptive ratio of N，P and K is 1：0.55：0.34，the plant assimilates 20.9kg N，11.5kg P₂O_s and 7.2kg K₂O for each 1000kg item ，and the P absorbed proportion increases significantly at the later growth period．