Abstract:
In order to study the soil enzyme activity of
Dendrocalamus giganteus and the response of microorganisms to different treatments such as organic fertilizer, compound fertilizer, bamboo cavity fertilizer and green manure, as well as the changes of biomass of new
D. giganteus bamboos were analyzed, including organic fertilizer (A), compound fertilizer (B), bamboo cavity fertilizer (C), green fertilizer (D) and CK as the control group. The results showed that: (1) Fertilization significantly affected soil enzyme activity and soil microbial content. Each fertilization treatment has a certain effect on the soil enzyme activity. Among the different fertilization treatments, the soil acid phosphatase (4.796 μmol·g
−1·d
−1) and soil invertase activity (31.567 mg·g
−1·d
−1) were the highest in the application of green manure, the soil acid protease activity (4.461 mg·g
−1·d
−1) with compound fertilizer was the highest. (2) The number of soil bacteria (1.044×10
8 cfu·g
−1) applied with green manure was the highest, soil actinomycetes (1.42×10
7 cfu·g
−1) and nitrogen-fixing bacteria (4.59×105 cfu·g
−1) with organic fertilizer were the highes. (3) The average DBH (12.07 cm) and biomass (48127.18 kg·hm
−2) of
D. giganteus under the compound fertilizer were the largest. The results showed that organic fertilizer and green fertilizer could improve soil enzyme activity and microbial biomass. Bamboo cavity fertilizer had no significant performance in this study. Compound fertilizer could effectively promote the growth of
D. giganteus in the short term.