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Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes/issues, but are citable by Digital Object Identifier (DOI).

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Effect of Grinding Quality and Process on Mechanical Properties of Box-Shaped Member Made by Bamboo Bar under Axial Compression

, Available online , doi: 10.12390/jbr2023063

Abstract(16) PDF(7)

Abstract:
【Objective】 To study the effects of grinding quality and manual technology on the basic mechanical properties of short and long axial compression rods made of 1 mm×6 mm bamboo strips. 【Method】 112 hollow box compression rods with section size of 6 mm×6 mm were fabricated by planning and grinding bamboo rods with different initial mass. The mass and ultimate bearing capacity of the hollow bar were tested，and the load-mass ratio was calculated. Finally，the influence of three different grinding processes on the mechanical properties of the bar was discussed. 【Result】 After grinding，the mass of the hollow short rod was reduced to 1/2 of the original，but the bearing capacity could reach 350 − 550 N，and the charge-mass ratio was above 560 N·g^-1. 【Conclusion】 When selecting bamboo material in model making，the bamboo strip with small initial mass is selected for long rod and the bamboo strip with large initial mass is selected for short rod. The research results can provide reference for the selection and manufacture of rods in the national college students’ structural design competition.

Status of Bamboo Industry Development and Resources Utilization of Bamboo Shoots Shell in Fujian Province

, Available online , doi: 10.12390/jbr2023065

Abstract(42) PDF(31)

Abstract:
【Objective】 Fujian Province is the key production area of bamboo in China，with rich bamboo forest resources and the production of bamboo shoots ranks No.1 in our country. During the processing of bamboo shoots，there will be a large number of solid wastes like bamboo shoot shells，root stumps etc.，which will cause environmental pollution if they are not utilized. The paper is aimed at finding out the current situation of resources utilization of bamboo shoot shells in Fujian Province. 【Method】 In this paper，we start from the development status of bamboo industry in Fujian Province and analyse the present situation of bamboo shoot processing industry there，with a focus on reviewing the development status of technology for feed，substrate，and fertilizer utilization of bamboo shoot shells. 【Result】 At present，the research of bamboo shoot shell utilization technology is still in the preliminary stage in Fujian Province，and there remain many problems like limited technology and mediocre promotion effect etc. 【Conclusion】 Therefore，it is necessary to increase the research investment into technology of bamboo shoot shell utilization by focusing on the implementation and promotion of the technology of comprehensive utilization of forage，matrix and fertilizer of bamboo shoots shell，and the in-depth utilization of the contents of bamboo shoot shells.

Comparative Study on the Growth of Annual Seedlings from Two Provenances of Chimonobambusa utilis

, Available online , doi: 10.12390/jbr2023039

Abstract(78) PDF(107)

Abstract:
【Objective】 In order to improve the survival rate and reduce the cost of afforestation，by comparing the growth difference of the seedlings from two provenances of Chimonobambusa utilis，and the excellent seedlings were selected for afforestation in the mountains. 【Method】 In this study，the seeds of Qingba and Huanglian from Tongzi County of Guizhou Province were selected for seedling cultivation，and the growth of annual seedlings from the two provenances of Ch. utilis was compared. 【Result】 The results showed that each index of annual seedlings from two provenances increased with time in a positive proportion，and the growth of each index was small in winter due to the influence of air temperature，the maximum plant height and ground diameter of annual seedlings from Qingba provenance were better than those from Huanglian provenance，but the number of tillers and number of leaves from Huanglian provenance were better than those from Qingba provenance. 【Conclusion】 Through cluster analysis，three indexes of maximum plant height，ground diameter and number of tillers from annual seedlings of Ch. utilis were selected as the comparison indexes，and the seedlings were divided into four grades，grade Ⅰ (excellent)，grade Ⅱ (good)， grade Ⅲ (medium) and grade Ⅳ (poor)，which is expected to provide theoretical basis for the cultivation and introduction.

Submission Peer Review Office Work Editor Work

Founded in 1982 quarterly

Used Name：Journal of Bamboo Research

Competent Authorities:
National Forestry and Grassland Administration

Sponsored by:
Bamboo Research and Development Center, National Forestry and Grassland Administration

ISSN1000-6567

CN33-1399/S