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最新文章
A Preliminary Analysis of Development Status and Prospects of Blueberry Industry in China
摘要: Blueberries have recently gained popularity as a "superfruit" among consumers worldwide. The rise of healthy eating concepts has led to widespread recognition of the nutritional content and antioxidant properties of blueberries, boosting the blueberry industry’s rapid growth. Blueberry production and processing are currently major elements of the agricultural economy in many nations and regions, including the United States, Canada, and Europe. The blueberry business has developed a reasonably mature industrial chain that includes planting, harvesting, processing, sales, and other components. The blueberry industry in China started relatively late. However, with the growth of market demand and consumer attention to healthy food, the blueberry planting area has been expanding every year. Several provinces and cities in China are actively promoting the construction of blueberry planting bases and gradually expanding from planting to deep processing fields, forming diversified products, including fresh fruits, dried fruits, jams, and blueberry drinks. With advancements in technology and innovation in management models, the efficiency and market competitiveness of blueberry cultivation are progressively improving. The blueberry industry has broad prospects. On the one hand, the ongoing enhancement of consumer health needs is expected to elevate the market demand for blueberries as high-value functional foods; alternatively, the advancement of planting technology and cold chain logistics may further optimize the yield and quality of the blueberry industry. The production of deep-processed blueberry goods will become a significant highlight of industrial development, enhancing the market value. This study aimed to investigate the various categories of blueberries, the blueberry industry’s current state of development, and the challenges it encounters. In summary, the blueberry sector possesses significant future potential, but it also faces problems, including planting practices, market competitiveness, and brand development. The blueberry industry can expand and industrialize due to creative developments.
关键词: Blueberry industry, Planting techniques, Market competition
Dual Effects of Rural Education on Adolescents’ Physical and Mental Health and Cultivation of Agricultural Labor Force in the Philippines
摘要: This study is to explore the dual effects of rural education in promoting the physical and mental health of adolescents and developing agricultural labor force in the Philippines. By analyzing the data of the Philippine Bureau of Statistics (PSA), the report of the Ministry of Education and the survey of the Asian Development Bank (ADB) from 2015 to 2022, and combining with 12 core documents, this paper summarized the data of the Ministry of Education. It reveals that rural education has significantly improved the health literacy of adolescents through curriculum and community interaction (education coverage increased from 48% in 2015 to 67% in 2021), while providing an average annual labor reserve of 15% for agricultural production. In spite of this, geographical isolation (30% of rural schools need to walk more than hour) and uneven distribution of resources (education expenditure per student in urban areas is 2.3 times that in rural areas) are still main constraints for the education effectiveness. Finally, this study proposes implementing the policy framework of "integration of agricultural education", integrating mental health services and vocational skills training, and establishing a cross-sectoral collaboration mechanism.
关键词: Philippines, Rural education, Adolescent development, Agricultural modernization, Education Policy
Characteristics and Main Points of the Theory and Technology of Hypobaric Storage and Preservation of Fresh Agricultural Products: Insights Gained from Two Monographs by Stanley P. Burg
摘要: In 2004 and 2014, two monographs on hypobaric storage (LP) were published by Stanley P. Burg. Based on his theoretical framework and technological advancements, as well as the research and development of equipment conducted under his guidance, alongside customer practices and reflections on various scientific literature both domestically and internationally, it is posited that, as articulated in the monograph, misconceptions regarding his theory and technology in Western scientific literature prior to 1985 continue to persist. This ongoing dissemination of misunderstandings has resulted in a near stagnation of research and has adversely impacted the Chinese academic community as well. Consequently, it is essential to delineate the characteristics and main points of its theory and technology, with the aim of offering guidance to individuals seeking to comprehend its foundational purpose. LP technology is a dynamic physical technology that continuously and uninterruptedly extracts air from a closed container and simultaneously introduces fresh, low-pressure moist air from the external environment, while maintaining specific levels of humidity and/or temperature within the container and upholding a predetermined pressure value. Preservation technology is the collective term for the set of various technical parameters associated with preservation, including pressure, relative humidity, and other relevant factors, to which LP equipment is specifically designed. The theory of LP is characterized by the enhanced diffusion of gases and vapors that enter and exit the commodity in a dynamic manner under low pressure conditions. The theoretical points involve equipment performance, low pressure, the impact of trace concentrations of gases such as O2, CO2 and C2H4 that naturally occur at low pressure, diffusive mass transfer, heat transfer, and impacts on the activity of enzymes associated with maturation and senescence. The technology is characterized by dynamic low pressure, and the range of commodities preserved is comparable to that of refrigeration. However, certain commodities exiting the hypobaric environment possess subsequent preservation advantages that are not available through refrigeration. The main points of the technology encompass an extended sotrage life, a postponement of quality degradation, minimized water loss, the suppression of pathogen growth, and the killing of both internal and external insects of the commodity under dynamic low pressure conditions. The core advantage of LP technology lies in its ability to significantly reduce water loss, inhibit respiration and C2Haction, and pathogen growth, killing insects and modulate the activity of enzymes associated with maturation and senescence in post-harvest fresh horticultural products. Consequently, this technology plays a crucial role in prolonging the post-harvest lifespan of these commodities and mitigating quality degradation. Over the past decade, researchers in China have developed a hypobaric short period treatment technology, grounded in LP theory and technical practice, which is commonly referred to as hypobaric treatment. This method has garnered significant attention, leading to an increase in both domestic and international research. A growing body of literature categorizes LP as hypobaric treatment, while some studies also consider vacuum packaging and modified atmosphere packaging (MAP) as LP or hypobaric treatment. Misunderstandings are exacerbated by confusion surrounding nomenclature, which, in conjunction with pre-existing misconceptions, represents a significant barrier to both the research and practical application of the technology. The successful commercial implementation of a vacuum cold fresh chain, centered on LP or hypobaric treatment technology, may be the sole solution to the prevailing misunderstandings associated with LP.
关键词: Hypobaric storage, Stanley P. Burg, Hypobaric treatment preservation, Theory, Technology, Characteristics and main points, Vacuum cold fresh chain
Research on Integrated Agro-Aquaculture Ecological Farming Technology
摘要: [Objectives] To establish an integrated agro-aquaculture ecological farming model by combining in-pond cage fish farming, water circulation systems, and rice cultivation on bio-floating beds, and compared it with traditional pond farming. [Methods] The research was carried out in 3 test ponds and 3 control ponds. A 6 m×9 m×2.5 m cage was set every 667 m2 in the test pond, and water circulator and microporous oxygenation equipment were installed. Ecological floating beds were set on both sides of the pond. Common aeration equipment was used for control ponds. The same number and size of crucian carp, and the same number, proportion and size of silver carp and bighead carp were raised in both the test and control groups. Total nitrogen, ammonium nitrogen, total phosphorus and phosphate content was determined every 15 d, and growth indicators and feed conversion ratios of fish were measured at the end of the experiment. [Conclusions] The content of total nitrogen, ammonium nitrogen, total phosphorus and phosphate in the experimental group decreased by 50.69%, 69.12%, 62.62% and 54.20%, respectively, compared with the control group. Compared with the control group, the harvest size, survival rate and yield per unit area of crucian carp in the experimental group increased by 5.25%, 7.58% and 13.28%, respectively, and the feed conversion ratio decreased by 4.72%. [Results] The integrated agro-aquaculture model demonstrated significant advantages in mitigating eutrophication, improving yield, and enhancing feed efficiency.
关键词: Integrated agro-aquaculture, Ecological farming, Traditional farming, Nutrient removal, Water purification