Search

Abstract [Objective] The study aims to investigate the bamboo resources in Guizhou in order to supplement and enrich the existing bamboo materials, as well as to provide a basis for the planning and developing of bamboo industry. [Methods] Field investigation, specimen collection and identification, and information retrieval were conducted using a combination of “surface” and “point” methods to compile new distribution records of genera and species. [Results] One genus and six species of newly recorded bamboo plants were found in Guizhou Province. The new record genus was Schizostachyum . The six new record species were S. pseudolima McClure, Bambusa funghomii McClure, Yushania longshanensis D. Z. Li & X. Y. Ye, Y. polytricha Hsueh et Yi, Y. pauciramificans Yi, and Y. punctulata Yi. [Conclusion] The discovery of these new genera and species in Guizhou expands the distribution of bamboo plants and enriches their diversity in Guizhou

【Objective】 Increasing and stabilizing carbon in coarse-textured soils is important to improve their stability and fertility. The purpose of this paper is to investigate how soil amendment with organic materials and clay minerals can achieve these goals. 【Method】 We took spinach as a model crop, and compared eight treatments by amending the soil with woody peat (HW), biochar (HB), lignite (HC), humic acid (HH), woody peat + bentonite (HWb), woody peat + illite (HWa) and woody peat + kaolinite (HWg), respectively. Not amending the soil was taken as the control (H0). In each treatment, we measured crop growth as well as the changes in soil physical and chemical properties. 【Result】 Compared with H0, HW, HB, HC and HH improved the growth and yield of the spinach, as well as physical and chemical properties of the soil. In particular, HB increased the net photosynthetic rate, plant height and leaf of the spinach during the harvest period by 21.5%, 23.5%, 69.5% and 70.9%, respectively, and soil organic matter and total nitrogen content by 236.2% and 20.7%, respectively, compared to H0. In comparison, HH reduced soil pH by 16.8% and increased crop yield by 4.7% during the harvest period, compared to H0. Combined with clay mineral amendment, HWb, HWa and HWg increased crop yield by 22.7%, 9.0%, and 9.0%, respectively, and soil organic matter by 33.5%, 2.4%, and 27.0%, respectively, compared with HW without clay mineral amendment. 【Conclusion】 Amending the soil with organic materials alone, biochar was most effective in improving soil fertility and crop yield. For combined amendment with organic materials and clay minerals, amending the soil with woody peat and swelling and shrinking clay mineral bentonite at 2:1 ratio worked best for boosting crop growth while in the meantime improving soil fertility.

With the rapid development of digital technology and virtual reality technology, virtual reality technology has been paid more and more attention by more and more people. To investigate the application of virtual assembly simulation and improve ergonomics, the study on the interactive assembly operation has been performed. A Comprehensive Evaluation Method for ergonomics based on simulation of virtual assembly operations is proposed, aiming at avoid inadequate working postures, effectively improve assembly quality and shorten the production cycle. In this paper, the virtual assembly technology is introduced to the assembly process of an industrial manipulator. Details of the virtual assembly simulation process of an industrial manipulator design and its implementation are presented. This proposed method provides great support to the design of assembly process and brings about good change in the ergonomics of machine and system visualization. The analysis of this instance plays a guiding role in the optimization of human factors engineering.