Nutrient Requirement Of Euonymusfortunei And Fertilization Effect

Wild Euonymusfortunei output is too low to meet the demand of Euonymusfortuneiin the present market and the need of large-scale Chinese medicine production. Thuseffective measures, e.g. rational fertilization and irrigation, should be adopted toincrease the output of Euonymusfortunei. Therefore, this study conducted a fieldexperiment of combined organic and inorganic fertilization to study the nutrientrequirement of euonymusfortunei and its fertilization effect. The results are outlined asfollows:1. N, P and K absorption of Euonymusfortunei is the highest from mid-May tomid-June, then mid-April to mid-May and Mid-July to mid-August, but the lowest inNovember and December.2. Stem and leaf Ca contents in Euonymusfortunei are the highest among allelements, and absorption of Ca and Mg in the later growth periods of Euonymusfortuneiwas higher than those of earlier growth periods. The peak absorption periods are fromMid-August to mid-October for Ca and Mg and mid-May to mid-September for S.3. Stem and leaf Fe content appeared three peak periods, i.e. June, November andnext January. Mn content in the later growth periods of Euonymusfortunei was higherthan those of earlier growth periods. Zn content increases rapidly after October andreaches the highest in November. B content is the highest in December. 4. The orders of nutrient content in the stem and leaf of Euonymusfortunei are N＞Ca＞K＞P＞Mg＞S＞Fe＞Zn＞B＞Cu＞Mn for the earlier growth period and Ca＞N＞K＞P＞Mg＞S＞Fe＞Zn＞B＞Cu＞Mn for the later growth period.5. Dry masses of stems and leaves increase with the application of organic manure,chemical fertilizer and combined organic and inorganic fertilizer. Compared to nofertilization, dry masses were increased by 69.6-101.4% with organic manure and158.5% with chemical fertilizer. Combined organic and inorganic fertilizer increaseddry mass by 29.0-42.2% when compared to sole chemical fertilizer.6. Nutrient absorption of Euonymusfortunei increases with the application oforganic manure, chemical fertilizer and combined organic and inorganic fertilizer incertain degree. Producing 1000 kg dry mass must absorb 9.3-12.8 kg N, 3.6-4.8 kg P₂O₅,9.5-10.7 kg K₂O, 15.8-22.3 kg Ca, 2.7-3.0 kg Mg, 1.5-1.7 kg S, 16.8-29.5 g Zn and17.4-27.3 g B, N:P₂O₅:K₂O:Ca:Mg:S is 1:0.36-0.39:0.83-1.02.7. Organic manure and combined organic and inorganic fertilizer can enhance soilorganic matter content, but only chemical fertilizer reduces soil organic matter content.Fertilization increase soil available N (hydrolytic N) and P content, but no fertilizationreduced them. Soil available K content reduced in all treatments, the greatest reductionin the no fertilization treatment, the lowest reduction in the combined organic andinorganic fertilizers.In summary, this article initially obtains nutrient requirement of Euonymusfortunei.The nutrient absorption of Euonymusfortunei can be enhancded and the output can beimproved by appling fertilizer rationally. Also the soilphysics and chemistry charactercan be improved in the certain degree.