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Journal of Chinese Agricultural Mechanization

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Status, problems and countermeasures of whole mechanized production of garlic in China
Cui Zhichao, Liu Xiancai, Chen Yongsheng, , Guan Chunsong, Yang Yating, Xu Binxing
Abstract219)      PDF (836KB)(278)      
Garlic is one of the important economic crops in China. The planting area, yield and exports rank first in the world, however the mechanized production level is especially more insufficient to meet production needs. The current situation, planting mode and whole mechanized production of garlic industry were summarized. To realize full mechanization, the key points were proposed which were positive bud sowing and garlic joint harvesting, and the difficult point was garlic shoots harvesting. Analyze the problems faced by garlic production, such as small planting scale, nonuniform pattern and specification, low performance and efficiency of machinery, and put forward suggestions to promote the development of the whole process of garlic mechanization, such as propose the formulate and promotion of suitable mechanized planting models and standards, improve complete sets of combined harvesting technologies and equipment, and focus on demonstration and promotion of base construction, in order to provide reference for the research of garlic production equipment in China.
2023, 44 (6): 239-143.    doi: 10.13733/j.jcam.issn.2095-5553.2023.06.034
Comprehensive evaluation of mechanized operation mode and operation effect of Artemisia selengensis
Yang Yating, Tang Xiaofeng, Ni Wenjun, Yu Feng, Yao Xiaojuan, Chen Yongsheng
Abstract61)      PDF (1977KB)(146)      
Artemisia selengensis is one of the important characteristic wild vegetable species in Jiangsu Province. After two years of experiment, based on the harvesting machine optimization, the mechanization production technology mode of Artemisia selengensis was established, which realized the mechanization of stubble mowing, subsoiling, fertilizer spreading, rototilling and ridging, transplanting, insecticide spraying, irrigation, harvesting and transportation. The results showed that the comprehensive cost of mechanized operation was 6 858.37 Yuan/hm2 in the autumn mode and 6 657.40 Yuan/hm2 in the winterspring mode. The mechanized production could save 69.52% and 55.62% in autumn mode and winterspring mode, which significantly reduced labor expenses and had good application prospects. However, the operation cost of transplanting, subsoiling and harvesting account for about 65% of the total operation cost, so the reduction of mechanization transplanting cost is needed.
2023, 44 (12): 232-238.    doi: 10.13733/j.jcam.issn.2095-5553.2023.12.034
Development status of technology and equipment of substrate block seedling cultivation and transplanting
Cui Zhichao, Guan Chunsong, Xu Tao, Yang Yating, Xu Binxing, Chen Yongsheng.
Abstract323)      PDF (773KB)(407)      
Substrate block seedling, also known as nutrient block seedling, has become the predominant research direction aiming at expanding vegetable seedling and transplanting owing to advantages such as short seedling period, high survival rate, and high mechanical transplanting efficiency. This paper summarized the key technology of substrate block seedling transplanting, and described the development status, characteristics and application of substrate block seedling raising equipment and transplanting equipment in China and abroad. Taking broccoli as an example, this paper analyzed the economic benefits and application prospects of substrate block seedling raising and transplanting. The issues of substrate block seedling transplanting were analyzed, such is seedling blocks plates were too heavy to carry, blocks were boned due to no barrier between blocks, and low automaticity. And optimizing physical and chemical parameters of substrate block seedling, improving structure of substrate block seedling plate, collecting block seedling automatically to realize transplant automatically were proposed. This provides reference for the research of substrate block seedling raising equipment and transplanting equipment. 
2022, 43 (5): 29-34.    doi: 10.13733/j.jcam.issn.20955553.2022.05.005
Design and experiment of vegetable seedling substrate block forming machine
Zhao Wei, Cui Zhichao, Guan Chunsong, Chen Yongsheng, Yang Yating, Gao Qingsheng.
Abstract196)      PDF (1759KB)(248)      
 Substrate block seedling has the advantages of root and seedling protection, short seedling delay period, and high survival rate. However, the market of substrate block seedling is relatively small, mainly limited by inadequate matrix block molding processing equipment. Therefore, a vegetable seedling substrate block molding machine was designed in this paper, which could realize the functions of automatic soil laying, block pressing, block throwing, and conveying. The structure of the whole machine, the transmission system, the bowl plate mechanism, the pressing block, and the throwing block mechanism were designed successively. Three factors affecting molding quality were tested by an orthogonal test with earthworm manure to clay soil. The test results showed that the optimal parameter combination was obtained as mixing ratio of 1∶3, the compression ratio of 0.65, and the moisture content of 10%. In this condition, the dimensional stability was 98.96%, the antibreaking pressure was 246.86 N, and the dispersion rate was 4.15%, which could meet the substrate block seedling transplanting requirements to provide theoretical reference for the research and development of substrate block forming processing line.
2021, 42 (9): 77-82.    doi: 10.13733/j.jcam.issn.2095-5553.2021.09.11
Status and level analysis of mechanized transplanting production of vegetables in open fields
Gao Qingsheng, Chen Yongsheng, Guan Chunsong, Yang Yating, Cui Zhichao
Abstract191)      PDF (600KB)(365)      
Mechanized transplanting is the key link to realize the large-scale and standardized production of vegetables. In order to better understand the vegetable mechanization status, the current situation of mechanized transplanting operations in typical vegetable bases in major vegetable planting areas was investigated, and the mechanized transplanting operation level of each base was calculated according to the industry standard of the agricultural mechanization level of the planting industry. The results showed a large gap between the mechanized transplanting operation level of open field vegetables in various regions, with a value of only 24.4%. This paper analyzed the problems of low return on investment in machinery and equipment in the transplanting process and unmatched operation equipment in the front and rear links. Combined with the current status of China's mechanized vegetable transplanting operations, specific suggestions were made, including increasing the research and development of fully automatic transplanting, improving socialization service intensity, perfecting facilities and personnel support, and perfecting standardized operation specifications.
2021, 42 (11): 193-197.    doi: 10.13733/j.jcam.issn.20955553.2021.11.29