Effects of Different Fertilization and Light Treatments on Growth Characteristics of Myrciaria cauliflora Berg

【Objective】The response of Myrciaria cauliflora Berg to different fertilization and light treatments were studied.【Method】Taking the 4-year-old raw M. cauliflora as experimental objects, the effects of different fertilization and light treatments on the growth characteristics of M. cauliflora were studied.【Result】Different types and concentrations of fertilizer were conductive to the increase in plant height, ground diameter and crown width of the M. cauliflora. The maximum increase in plant height was found in the condition of 0.2 kg compound fertilizer/plant, increased by 15.51% compared with that of non-fertilization(CK); The maximum increase in ground diameter of M. cauliflora was found in the condition of 0.2 kg compound fertilizer/plant, increased by 8.49% compared with that of the CK; The maximum increase in crown width of the M. cauliflora was found in the condition of 0.1 kg nitrogen fertilizer per plant, increased by 15.37% compared with that of the CK. Different concentrations of fertilizer had the same effect on the growth of ground diameter and plant height, but had different effects on crown width. The growth of ground diameter and plant height increased with the increase of fertilization amount. The contents of chlorophyll a and b increased under the treatments of different types and concentrations of fertilizers. Among all the treatments, the treatment with the compound fertilizer of 0.2 kg/plant had the greatest effect on the improvement of chlorophyll a and b content; Shading of different degrees had no effect on the growth of plant height of M. cauliflora, but inhibited the growth of ground diameter and the content of chlorophyll a and b to some extent.【Conclusion】The application of compound fertilizer of 0.2 kg/plant in production had a promoting effect on the growth of plant height and ground diameter of M. cauliflora Berg.