Hans Journal of Agricultural Sciences
ISSN / EISSN: 21645507 / 21645523
Published by: Hans Publishers
Total articles ≅ 1,160
Latest articles in this journal
Hans Journal of Agricultural Sciences, Volume 13, pp 211-216; https://doi.org/10.12677/hjas.2023.133030
Forest health care is based on high-quality forest resources as the carrier, integrating new concepts of health services such as tourism, rest, health care, vacation, medical treatment, etc. It is a new model and business form of the current forestry industry development, and also a product of the new era of green development. Forest health care plays a prominent role in realizing the ecological value of forestry and promoting rural revitalization. The development of forest health industry is an important measure to practice the idea of ecological civilization, and also the best embodiment of the concept of “two mountains”, which is of great significance. After a long time of exploration and practice, China’s forest health industry has formed a certain scale and has a good development prospect. It has gradually become a new upsurge in the development of today’s health industry and forest tourism, which has aroused widespread concern from all sectors of society. This study discusses the concept of forest health care services, development prospects and the value of ecological services, and puts forward corresponding countermeasures to the problems faced by the current development of forest health care industry.
Hans Journal of Agricultural Sciences, Volume 13, pp 163-172; https://doi.org/10.12677/hjas.2023.133023
Under the country’s rural development call of “green development, rural revitalization”, in order to solve the problem of rural sewage treatment and recycling, we designed a simple village sewage treatment system based on AO treatment process. The system has the characteristics of small area, low construction and operation cost and good processing effect. Through the actual case of Quzhou Experimental Station of China Agricultural University, the removal rate of total phosphorus and ammonia nitrogen reached 50% and 93% respectively after one year of operation of the system. The COD content of wastewater is reduced from about 700 mg/L to 16 mg/L, and the removal rate is 98%, reaching the standard of farmland irrigation water (GB5084-2005). The treated water can be directly used for farmland irrigation water. The practical application case of Quzhou experimental station also shows that fish can survive in the treated sewage for a long time, which proves the treatment effect of this system. This system is worth popularizing and applying in countryside of our country.
Hans Journal of Agricultural Sciences, Volume 13, pp 151-155; https://doi.org/10.12677/hjas.2023.132021
Based on the data of the watermelon greenhouse microclimate observation station in Changle County, Weifang City, Shandong Province, this paper adopts the stepwise regression method to build the winter watermelon greenhouse minimum temperature prediction model and verify the model. The results showed that the lowest temperature inside the shed was always higher than that outside the shed, and the lower the air temperature outside the shed, the greater the difference between the air temperature inside and outside the shed; under different weather conditions, the average absolute error of the measured and simulated values of each model is between 1.1 ˚C and 1.3 ˚C, and the fitting effect is good.
Hans Journal of Agricultural Sciences, Volume 13, pp 157-162; https://doi.org/10.12677/hjas.2023.133022
In order to screen suitable early and middle maturing rice varieties in the mountainous areas of southwest Hubei, a formal field plot test was set up in Lichuan City, Hubei Province. The results showed that six varieties, Changnongyou 2521, Enyou 07196, Taoyou 1831, Luoyou 568, Mingzaoyou 673 and Yixiangyou 109, were suitable for popularization in high altitude areas with an altitude of about 1100 m. The yield per mu of these six varieties is more than 500kg, which is significantly higher than that of the control Mianyou 142; The growth period is moderate, not more than 170 days, and can be safely eared before August 20. The possibility of yield reduction caused by “autumn wind” (commonly known as autumn low temperature) is small; high resistance to rice blast, suitable for large-scale promotion in Lichuan city with high incidence of rice blast and regions with similar climate.
Hans Journal of Agricultural Sciences, Volume 13, pp 217-224; https://doi.org/10.12677/hjas.2023.133031
With the development of the times and the people’s yearning for a better life, wine products are required to keep pace with the times. Homogeneous and popular products are no longer attractive. The research direction is to pursue the essential characteristics of wine and explore the regional advantages of grape varieties and production areas. “Three parts of technology, seven parts of raw materials”, that is to say, under the same winemaking process conditions, the quality of wine grape directly affects the quality of wine. Huailai is located in the advantaged natural conditions, making Huailai one of the most suitable grape producing areas in China. Taking the wine grape variety Shi-raz in Huailai production area as the research object, through the application of leaf picking and fruit thinning and yield control technology in different periods and degrees, the grape ear can fully receive the light, effectively control the yield of Shiraz grape, and finally realize the improvement of Shiraz grape and wine quality.
Hans Journal of Agricultural Sciences, Volume 13, pp 196-201; https://doi.org/10.12677/hjas.2023.133028
Based on the survey sample data of the interest linkage between agricultural parks and farmers in Tianjin, the binary logistic regression model and ordinal logistic regression were used to empirically analyze the influencing factors of farmers’ income increase. The binary logistic regression model shows that the number of labor force, whether engaged in leading industries, the way of selling agricultural products, the agreed quality in the contract have a significant impact on whether farmers can increase their income. Combined with the ordinal logistic regression model, it is concluded that experience and knowledge, engaged in leading industries, agricultural products sales methods of supply supermarkets have a significant positive impact on the continuous promotion of income increase. According to the results of empirical analysis, this paper further analyzes the factor matching problem in the interest connection between agricultural parks and farmers from the perspective of factors, and puts forward the optimization path to give full play to the important role of agricultural parks in continuously promoting the rural revitalization strategy and increasing farmers’ income.
Hans Journal of Agricultural Sciences, Volume 13, pp 202-210; https://doi.org/10.12677/hjas.2023.133029
The effect of P2O5 on the quality of tobacco leaves was studied through the experiment of different amounts of calcium magnesium phosphate fertilizer. The experiment adopted a randomized block design, four treatments were repeated three times, and 12 plots were applied with calcium magnesium phosphate fertilizer 15 kg (T2), 30 kg (T3), 45 kg (T4) and blank control (T1). The results showed that when tobacco was planted on the yellow mud soil in Hengyang County, the P2O5 application rate was suggested to be between 8.1~8.9 kg/mu, which could not only promote the vigorous growth of tobacco (plant height, stem circumference, pitch, leaf area and effective leaf number were the best), but also increase the yield, increase the proportion of medium and top grade tobacco, improve the quality and increase the income of farmers.
Hans Journal of Agricultural Sciences, Volume 13, pp 190-195; https://doi.org/10.12677/hjas.2023.133027
Taking Haoda water-soluble fertilizer containing humic acid produced by Wuhan Haoda Agricultural Science and Technology Co., Ltd., as the material, a formal field plot test was carried out in a citrus orchard with an altitude of more than 600 m, and the application effect of this fertilizer on citrus was verified. The results showed that the effect of 1000 times liquid spray or spray + root irrigation on the yield and income of citrus was significant, which increased 75.4 kg and 99.4 kg, respectively, by 6.57% and 8.66%, compared with the conventional fertilization, and the net income per mu was 868.8 yuan and 596.8 yuan, respectively; compared with the conventional + clean water spray, the yield increased by 64 kg and 88 kg, 5.52% and 7.59% respectively, and the net income increased by 732 yuan and 460 yuan respectively. The fertilizer can promote the fruit setting of citrus to some extent, and the shoot germination in spring, summer and autumn; with the increase of application times, the number of shoots in summer and autumn increased gradually. The fertilizer can also promote the expansion of citrus fruit and increase the weight of single fruit, reduce the number of small fruit and increase the number of large fruit, so as to achieve yield increase.
Hans Journal of Agricultural Sciences, Volume 13, pp 173-179; https://doi.org/10.12677/hjas.2023.133024
Baiyang River basin is located across Dabancheng, Urumqi and Tuokexun County, Turpan. The whole basin is characterized by dry weather, windy weather, heavy rainfall, and rare evaporation. It is a basin irrigation area with superimposed drought and extreme drought in Xinjiang. Improving the water supply and delivery efficiency of the irrigation area has special significance for the efficient use of water resources. This paper takes the water supply and delivery efficiency of all levels of channels in the irrigation area as the research content, and adopts the measurement and analysis of the channel discharge section to show that: 1) the water utilization coefficient of the current channel system in the irrigation area of the basin is 0.5486 (the upstream Dabancheng is 0.5680; the downstream Tokson is 0.5012); the analysis shows that the water utilization coefficient of the canal system in 2030 is 0.6567 (0.6595 in the upstream Dabancheng; 0.6500 in the downstream Tokson). 2) The current irrigation water utilization coefficient of the irrigation area is 0.4975 (upstream Dabancheng 0.5112; downstream Tokson 0.4641); the irrigation water utilization coefficient in 2030 is analyzed to be 0.6239 (0.6265 in the upstream Dabancheng; 0.6175 in the downstream Tokson). 3) The improvement of irrigation water utilization coefficient in the irrigation area has made the current irrigation water intake of 382.6 million m3, down to 318.72 million m3 in 2030, with good water saving effect.
Hans Journal of Agricultural Sciences, Volume 13, pp 184-189; https://doi.org/10.12677/hjas.2023.133026
Hemerocallis is widely used in landscape design and urban greening because of its diverse varieties, beautiful flower patterns, strong adaptability, simple management and low maintenance cost. At present, Hemerocallis cultivation is mainly cultivated in the open field, which is greatly affected by the weather. Facility substrate cultivation can reduce the occurrence of soil-borne diseases, achieve the purpose of saving water and energy, labor and fertilizer, and facilitate industrial production. In order to promote the development of Hemerocallis industry, this article summarized the techniques of Hemerocallis substrate cultivation from the aspects of variety selection, facility green-houses, substrate cultivation techniques, daily management and pest control.