[ Objective ] The paper was to understand distribution and damage of alien weed Mikania micramhaln in Huiyang District of China. [ Method ] The coverage, nearby water sources, surrounding plants and control status of ...[ Objective ] The paper was to understand distribution and damage of alien weed Mikania micramhaln in Huiyang District of China. [ Method ] The coverage, nearby water sources, surrounding plants and control status of M. micranthain under different habitats in Huiyang District were surveyed. [ Result] M. micrantha grew violently in the habitats of irrigation ditches, orchard, field edge and wasteland with the coverage ranging from 10% to 90%. It grew more seriously around water sources and was very likely to recur after control. The wild growth of M. micranthaln was harmful to local agriculture, forestry and fishery. The com- prehensive control measures combing artificial control, chemical control, biological control and ecological control should be adopted in different habitats. [ Conclusion] The study orovided basis for comorehensive control and invasion risk assessment of M. micranthain.展开更多
The intelligent optimizing method of cutting parameters and the cutting stable districts searching method are set up. The cutting parameters of each cutting pass could be optimized automatically, the cutting chatter i...The intelligent optimizing method of cutting parameters and the cutting stable districts searching method are set up. The cutting parameters of each cutting pass could be optimized automatically, the cutting chatter is predicted through setting up the dynamic cutting force AR(2) model on line, the spindle rotation speed is adjusted according to the predicting results so as to ensure the cutting system work in stable district.展开更多
基金Supported by Special Fund for Scientific Research in the Public Interest(201103027)Eleventh Five-Year National Science and Technology Support Project(2006BAD32B0103)
文摘[ Objective ] The paper was to understand distribution and damage of alien weed Mikania micramhaln in Huiyang District of China. [ Method ] The coverage, nearby water sources, surrounding plants and control status of M. micranthain under different habitats in Huiyang District were surveyed. [ Result] M. micrantha grew violently in the habitats of irrigation ditches, orchard, field edge and wasteland with the coverage ranging from 10% to 90%. It grew more seriously around water sources and was very likely to recur after control. The wild growth of M. micranthaln was harmful to local agriculture, forestry and fishery. The com- prehensive control measures combing artificial control, chemical control, biological control and ecological control should be adopted in different habitats. [ Conclusion] The study orovided basis for comorehensive control and invasion risk assessment of M. micranthain.
文摘The intelligent optimizing method of cutting parameters and the cutting stable districts searching method are set up. The cutting parameters of each cutting pass could be optimized automatically, the cutting chatter is predicted through setting up the dynamic cutting force AR(2) model on line, the spindle rotation speed is adjusted according to the predicting results so as to ensure the cutting system work in stable district.
