Journal of Agriculture and Forestry is an international, peer-reviewed open access journal dedicated to advancing research the field of agricultural and forestry sciences. The journal provides a rapid publication process to ensure wide dissemination of high-quality articles to scientists, professionals, and interested individuals worldwide. Our goal is to serve as an efficient, reliable, and trusted platform for scholars and readers, publishing cutting-edge research in the field.
Abstract: The effect of different topping methods of UAV on cotton topping was studied to provide technical support for spraying cotton topping agent by UAV. By designing three treatments of different topping methods (manual topping, UAV and locomotive) spraying topping agent, the effects of different topping treatments on the growth, yield and quality of cotton were analyzed. The results showed that the growth and development parameters of different topping treatments were not significantly different before topping. After toppling, compared with manual toppling CK (CL1), the plant height increased by 1.2cm, the leaf age and the number of fruit branches remained unchanged, the number of bolling per plant increased by 5.4, the plant height of UAV (CL2) and locomotive (CL3) with different toppling methods increased by 2.1-2.6cm, the leaf age increased by 0.9-1.1 pieces, the number of bolls per plant increased by 4-4.6, and the number of fruit branches increased by 0.3. There was no significant difference between CL2 and CL3, both of which effectively controlled the growth and development of cotton. The change trend of total dry weight was consistent with that of leaf dry weight. Manual topping (CK) had the fastest increase and the largest weight (30474.8kg/hm2), followed by locomotive topping (CL3) with 28519.6 kg/hm2, and UAV topping (21469.6kg/hm2). The highest yield of seed cotton was artificial topping CK 7713.0kg/hm2; The second was CL2, which was lower than CK 1330.5kg /hm2, and the difference was significant. The second is the locomotive topping CL3, lower than CK 1072.5kg/hm2, the difference is significant. The quality of CL2 in the topdressing treatment of UAV is better than that of CL3 in the topdressing treatment of locomotive, and the difference between parameters is significant. CK has the best benefit of 26,000 yuan /hm2, followed by the locomotive topping CL3, with the benefit of 19,000 yuan /hm2 and the benefit rate of 0.7%, The third is the drone top (CL2) benefit of 18,000 yuan /hm2. In summary, different topping methods can play a topping effect, the impact on the growth and development of cotton, yield and quality is different, the benefit is also different, can be selected according to actual needs.Abstract: The effect of different topping methods of UAV on cotton topping was studied to provide technical support for spraying cotton topping agent by UAV. By designing three treatments of different topping methods (manual topping, UAV and locomotive) spraying topping agent, the effects of different topping treatments on the growth, yield and quality of co...Learn More
Abstract: Computational fluid dynamics (CFD) offers a powerful tool for simulating the temperature field within an object and it is widely being used in studies related to tobacco curing. However, there remains a discrepancy between the simulated temperature values and the actual monitoring data. To quantitatively understand temperature simulation errors for a CFD model of a novel cigar-curing shed, the temperature within the cigar-curing area was simulated and errors were calculated. This model produced a relative error between −5% and 4%. The upper monitoring surface of the cigar-curing rack exhibited insignificant errors between 0:00–9:00 and 18:00–24:00 (maximum at 10:00–17:00). The distribution area was relatively disordered, and the negative-error area increased sharply. Furthermore, the simulation performance for the upper monitoring surface was superior to that for the lower surface, particularly at night. The worst results were realized in the lower monitoring surface at 11:00–18:00. The ambient temperature influences the temperature uniformity inside the shed, and a greater surface temperature dispersion led to larger simulation errors. CFD modeling errors are mainly responsible for these differences and offer a primary optimization direction. These errors can be reduced by using correction values. This study offers valuable insights for improving the effectiveness of CFD simulations of drying temperatures, thereby achieving a comprehensive and accurate understanding of the novel drying shed's performance.Abstract: Computational fluid dynamics (CFD) offers a powerful tool for simulating the temperature field within an object and it is widely being used in studies related to tobacco curing. However, there remains a discrepancy between the simulated temperature values and the actual monitoring data. To quantitatively understand temperature simulation errors for...Learn More
Abstract: Through field visits and surveys and combining with the actual situation of Wumei industry in Dazhou city, the author conducted in-depth analysis on the origin of Chinese medicinal materials, the development of Wumei industry in Dazhou City, the current situation of Wumei industry preliminary processing, and the existing problems, and proposed feasible countermeasures and suggestions. It is proposed to improve the quality and level of primary processing in Wumei production area by strengthening policy guidance and regulation formulation, improving the quality of practitioners, strengthening supervision, promoting large-scale and professional development, establishing industry associations or organizations, strengthening quality testing, promoting industry-university-research cooperation, and raising farmers' awareness. At the same time, it is also necessary to pay attention to the market demand of Chinese herbal medicine and the dynamic changes of the industry, constantly optimize the processing technology and product quality of plum, improve the overall competitiveness of Dazhou plum industry, and provide a theoretical basis for the construction of standardized planting technology and industrial upgrading of plum in Dazhou.Abstract: Through field visits and surveys and combining with the actual situation of Wumei industry in Dazhou city, the author conducted in-depth analysis on the origin of Chinese medicinal materials, the development of Wumei industry in Dazhou City, the current situation of Wumei industry preliminary processing, and the existing problems, and proposed feas...Learn More
