Effect of fertilization on growth and yield of Lolium multiflorum

Effect of fertilization on growth, content of chlorophyll and grass yield of Lolium multiflorum was studied through the field trail. The results of this study showed that the treatments of NPK combined fertilization and organic manure (OM) with same N content had significantly promoted growth and fresh grass yield of L. multiflorum. The plant tillers, height and the apparent leaf area of L. multiflorum under NPK treatment were significant higher than these under CK, PK and NK treatments, and the OM treatment was similar to NPK treatment. The NPK and OM treatments obviously increased the content of chlorophyll. The content of chlorophyll a of L. multiflorum under NPK treatment was 205.6%,189.5%, 29.9% and 3.1% higher than that under CK, PK, NK and NP treatments, respectively, and the content of chlorophyll b of L. multiflorum under NPK treatment was 292.3%, 218.8%, 50.0% and 2.0% higher than that under CK, PK, NK and NP treatments, respectively. The fresh yield of L. multiflorum treated with NPK combination fertilizer could rise by 255.0%, 329.1%, 37.5% and 9.0% compared with CK, PK, NK and NP treatments, respectively. The results of this study also indicated that the N fertilizer significantly promoted the L. multiflorum growth, and the impacts of P and K fertilizer were relatively lower. The effects of OM treatment were similar to NPK combined fertilization treatment.