Recent Adopted

Design and Experiment of Fertilization Mechanism for Tea Garden Loosening and Fertilizing Machine

wangwei , gejun , sunyan , fangliangfei , wuzhengmin , bihaijun , qinkuan

Adopted date: February 25,2026

[Abstract](1) [HTML](0) [PDF 0.00 Byte](0)

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The tea garden soil is often compacted and contains stones and gravel. When applying fertilizer by trenching, problems such as insufficient trench depth and unstable fertilizer application depth may occur. Therefore, a tea garden soil loosening and trenching fertilizer application machine was created, based on the original reciprocating tea garden soil loosening machine, by matching the loosening mechanism with the fertilizer application mechanism to add the fertilizer application mechanism, so that the trenching and fertilizer application operation can be carried out in the loosened and crushed soil after loosening, and the fertilizer depth can be increased by using the soil thrown by the loosening mechanism. For the structural design of the fertilizer trenching and loosening device, the structural parameters were determined in accordance with the agronomic requirements of tea garden trenching and fertilizer application. A coupled simulation model of Recurdyn and EDEM was established, and through single-factor simulation, the type of trenching machine with the minimum trenching resistance was determined, and orthogonal experiments were conducted to optimize the structure and operation parameters, resulting in the optimal operation parameters combination of the entire machine: forward speed of 0.07m/s, entry angle of 20°, and blade angle of 77.7°. The field verification test results show that this machine has good fertilizer and trenching performance, and can complete the loosening, trenching and fertilizing operations in one go. The variation coefficient of fertilizer drainage depth stability is 93.6%, and the variation coefficient of fertilizer uniformity is 92.1%. It is close to the simulation results and meets the agronomic requirements of tea garden machinery.

Study on the sewage discharge rhythm of pond cage buckets

Xia Chengxing , Tan Hequn , Chen Yifan , Liu Luyang

Adopted date: February 11,2026

[Abstract](5) [HTML](0) [PDF 0.00 Byte](0)

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Abstract This study aimed to explore the efficient sewage discharge rhythm of pond cage culture tanks, ensuring the timely and effective removal of feces and residual bait in the tanks while reducing the energy consumption of sewage discharge equipment, thus safeguarding the water quality in the culture tanks. To this end, two stocking densities (1000 fish/tank and 600 fish/tank) were adopted to conduct culture experiments of Micropterus salmoides (largemouth bass) and sewage discharge tests for the culture tanks. Taking the Total Suspended Solids (TSS) concentration and turbidity of the water at the sewage outlet as the test indicators, the variation law of water quality at the sewage outlet after feeding was studied. The results showed that after the start of feeding, the TSS concentration and turbidity of the water at the sewage outlet increased sharply, and did not stabilize until 7 hours after feeding. On this basis, with the goal of achieving no significant difference in ammonia nitrogen content between the water at the sewage outlet of the culture tanks and the external pond water, optimization experiments of different sewage discharge rhythms were carried out within 1-7 hours after feeding. The results indicated that short-term and multiple sewage discharges were more conducive to improving the water quality in the culture tanks, and different stocking densities required different sewage discharge rhythms:For the stocking density of 1000 fish/tank, the sewage discharge rhythm should be "5 minutes of sewage discharge at 2 hours after feeding, 3 minutes of sewage discharge at 4 hours after feeding, and 3 minutes of sewage discharge at 7 hours after feeding"; For the stocking density of 600 fish/tank, the sewage discharge rhythm should be "5 minutes of sewage discharge at 3 hours after feeding and 3 minutes of sewage discharge at 5 hours after feeding". Verification experiments were conducted, and the results showed that under the optimized sewage discharge rhythm in this study: For the 1000 fish/tank group, the cumulative removal rates of TSS concentration and turbidity increased to 98.46% and 97.86%, respectively, both higher than the 26.83% and 18.32% of the traditional sewage discharge method (5 minutes of sewage discharge at 2 hours after feeding); For the 600 fish/tank group, after the first two sewage discharges, the cumulative removal rates of TSS and turbidity reached 94.58% and 96.86%, respectively, which were also significantly higher than the 24.32% and 19.36% under the traditional sewage discharge method.

Impact of Dynamic Land Use Changes in Yichang City on Ecosystem Service Values

Hu Yaxin , Dai Wanzhen , Xing Xiaoyi , Jiang Yarong , Yang Lin

Adopted date: February 11,2026

[Abstract](4) [HTML](0) [PDF 0.00 Byte](0)

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The quantitative assessment of ecosystem service value (ESV) serves as a scientific basis for guiding rational utilization and effective management of ecosystems by humans. In-depth exploration of its spatio-temporal dynamic evolution is crucial for effectively monitoring regional ecological functions, optimizing ecosystem service management strategies, and proactively responding to future ecological trends. Focusing on Yichang City from 2013 to 2023, this study utilizes land use data and applies the equivalent factor method developed by Xie Gaodi to evaluate the spatio-temporal dynamics of ESV with the city as the research object. Supported by quantifiable data, the study aims to provide guidance for the city’s future economic and ecological sustainable development. During the research period, changes in land use types in Yichang City, particularly fluctuations in the areas of forestland, cropland, and water bodies, were identified as significant factors driving changes in ESV. This paper reveals the spatiotemporal evolution pattern of ecosystem service value in Yichang City, providing a scientific reference for the formulation of regional ecological security strategies and sustainable development plans for Yichang City.

Effects of Spodoptera exigua and herbivore-damaged amaranth on the tendency behavior of Microplitis pallidipes and their volatile compounds identification

Chen Yi Juan , Zhang Tong Yao , Jiang Jie Xian , Ji Xiang Yun

Adopted date: February 11,2026

[Abstract](7) [HTML](0) [PDF 0.00 Byte](0)

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Microplitis pallidipes is considered an important biotic factor for the natural population of Spodoptera exigua in the field, and volatiles play a crucial role in its host selection and location. We previously found that the larva-amaranth complex exhibits significantly attraction to M. pallidipes. To further investigate the sources and specific volatile compounds that can effectively affect the selection behavior of this parasitoid, Y-tube olfactometer assays were conducted to measure the behavioral responses of M. pallidipes to the bodies and excreta of S. exigua and larvae-damaged amaranth, and the corresponding volatile substances were collected and analyzed with SPME and GC-MS. The results showed that both the damaged amaranth and larvae significantly attracted M. pallidipes (the attraction rates were 67.86% and 65.38%, respectively), while the S. exigua excrement did not. GC-MS analysis indicated that 40, 27 and 32 compounds were identified in the damaged amaranth, the S. exigua larvae and their excrements respectively, consisting primarily of alkenes and alkanes. And 22, 17, and 11 compounds were only detected in those treatments, respectively. In addition, DMNT, methyl salicylate, and methyl benzoate in the infested amaranth were significantly higher than those in S. exigua larvae and their excrements, while α-himachalene in S. exigua larvae was higher than that in the damaged amaranth and the excrement of S. exigua. The damaged amaranth and S. exigua larvae were the main sources of volatile compounds which significantly attract M. pallidipes in larva-amaranth complex.

CHARACTERISTICS OF AGE AND GROWTH OF EUCHILOGLANIS KISHINOUYEI OF THE JINSHA RIVER BASIN

SU Xiaojing , TANG Maogang , XIONG Hao , YU Zongze , YANG Ruibin , Ma Xufa , YANG Xuefen

Adopted date: February 09,2026

[Abstract](7) [HTML](0) [PDF 0.00 Byte](0)

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以脊椎骨为年龄鉴定材料，对2004年于金沙江流域采集的208尾黄石爬鮡（Euchiloglanis kishinouyei）样本的年龄组成与生长特性进行初步分析，结合后期同水域种群数据比较分析，评估该水域黄石爬鮡种质资源变化。主要结果有：（1）样本种群体长范围为114~286 mm，体重范围为25.0~470.0 g；共鉴定出115尾鱼的年龄，由4~14龄组成，其中以8~11龄为主。体长（L）与体重（W）的拟合关系式为 W=3×10-5L2.8838（R2=0.9188，n=208），属匀速生长方式；von Bertalanffy拟合的体长和体重生长方程分别为：Lt=248.3[1-e-0.089(t+2.495)]、Wt=242.0[1-e-0.089(t+2.495)]2.8838，拐点年龄为9.38龄，此时的体长和体质量分别为Li=162.2 mm、Wi=70.9 g，表明金沙江流域黄石爬鮡生长缓慢。（2）与后期同水域种群生长参数比较，本研究黄石爬鮡群体的最大体长、体重和年龄均较大，且其大个体鱼与高龄个体占比较多；体长与体重关系式中b值更大，其生长方式明显不同；拐点年龄较大，且拐点年龄后的个体比例较高；渐近体长L∞、渐近体重W∞和表观生长指数φ均较大。结果表明随时间推移，黄石爬鮡种群存在显著低龄化和小型化现象。需尽快开展相关保护工作，以保护金沙江流域黄石爬鮡重要种质资源。

Recovery of green aqueous ammonia solution from biogas slurry and its CO2 absorption performance

Ruobing Xu , Mingfei Shi , Tao Sun , Youcheng Gu , Shuiping Yan

Adopted date: January 27,2026

[Abstract](16) [HTML](0) [PDF 0.00 Byte](0)

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To achieve high-value utilization of biogas and nitrogen-rich biogas slurry, this study employed vacuum membrane distillation (VMD) to separate and concentrate ammonia nitrogen from biogas slurry into green ammonia solution, which was subsequently used for biogas CO2 capture. The recovery performance of ammonia nitrogen from biogas slurry and the CO2 absorption characteristics of the produced aqueous ammonia solution were systematically investigated. Results showed that increasing the biogas slurry pH and initial ammonia nitrogen concentration significantly enhanced the aqueous ammonia concentration in the recovered green aqueous ammonia solution. Notably, when the initial biogas slurry concentration was 6 g-N/L and the pH was adjusted to 10, the aqueous ammonia concentration in the green aqueous ammonia solution reached 28.03 g-N/L. Moreover, coupling the permeate-side pressure with the biogas slurry temperature—while ensuring that the permeate pressure matched the corresponding saturated vapor pressure of water—yielded markedly higher ammonia separation factors and aqueous ammonia concentrations than adjusting either parameter alone. At an initial concentration of 1.5 g-N/L, under 60 °C and 20 kPa, the ammonia separation factor reached 15.86 after 6 h of operation, and the aqueous ammonia concentration reached 6.58 g-N/L. The CO2 absorption performance of the green aqueous ammonia solution was strongly influenced by the aqueous ammonia concentration, liquid velocity rate, and biogas flow velocity. When the aqueous ammonia concentration was 0.7 mol/L, with a liquid flow velocity of 60 mL/min and a biogas flow velocity of 0.3 L/min, the CO2 removal efficiency reached 98.79%. Although high concentrations of volatile fatty acids exhibited some inhibitory effect on CO2 absorption, the impurity levels in practical aqueous ammonia solution are typically low; thus, the recovered green aqueous ammonia solution can provide excellent CO2 capture performance.

Development of IRAP Markers and Molecular Identification of Idesia polycarpa Germplasms

ZHENG Xiaoya , HE Ying , WU Maohong , WANG Xiaoli , LENG Yuxin , ZHOU Kui , WEN Xiaopeng

Adopted date: January 26,2026

[Abstract](17) [HTML](0) [PDF 0.00 Byte](0)

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Idesia polycarpais Maxim. is an excellent woody oil tree species with significant economic and ecological value. Currently, the Inter-Retrotransposon Amplified Polymorphism (IRAP) marker system was developed in I. polycarpa based on the retrotransposon sequences of genome. Subsequently, 101 accessions from Guizhou Province were analyzed using 17 IRAP primers to construct molecular IDs and elucidate genetic relationships. The results indicated that the optimal 10-μL IRAP-PCR system was established as 0.6 μL template DNA, 1 μL IRAP primer, 6 μL PCR Mix, 2.4 μL ddH?O, and 40 PCR cycles via an L16(43) orthogonal test. Amplification with the 17 primers yielded 160 polymorphic fragments, averaging 9.4 per primer, with a polymorphic percentage of 100%. The average values of primers for the number of alleles (Na), effective number of alleles (Ne), Nei's gene diversity index (H), and Shannon's diversity index (I) were 2.000, 1.419, 0.261, and 0.412, respectively. Taking similarity coefficient 0.75 as a threshold, the 101 accessions were categorized into seven distinct groups. Furthermore, the germplasms, e.g. STZ74 andSTZ43 with the highest oil contents, were clustered into Group 6, and majority of those with the lowest oil contents were grouped into Group 1, e.g. STZ29, STZ41, STZ35, STZ30, and STZ31, et al. Seven core IRAP primers might efficiently differentiate all the accessions, thereby the obtained markers were used to construct DNA fingerprint and to generate molecular IDs. This study provides a valuable marker technology for the precise identification and genetic relationship analysis of I. polycarpa germplasms.

Lightweight YOLOv8 Model for Apple Leaf Disease Detection Based on Pruning and Knowledge Distillation

Zhang shuaiping , Shi lei , Zheng guang , Wang huixin , Yin fei

Adopted date: January 15,2026

[Abstract](19) [HTML](0) [PDF 0.00 Byte](0)

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Apple leaf diseases significantly impact fruit quality and yield. To overcome the limitations of existing detection methods in accuracy, real-time performance, and robustness under complex noise conditions, this study proposes SMPD-YOLO, a lightweight and real-time apple leaf disease detection model. Specifically, a Spatial Pyramid Pooling Fast Cross Stage Partial CSP (SPPFCSPC) module is integrated into the backbone network to enhance feature fusion. The Minimum Point Distance-IoU (MPD-IoU) is employed as the bounding box regression loss to improve model precision and accelerate convergence. The model is further compressed and computational complexity reduced via Layer Adaptive Magnitude-based Pruning (LAMP), while channel-wise knowledge distillation (CWD) is applied to boost detection performance. Experimental results demonstrate that SMPD-YOLO achieves a mean Average Precision (mAP@0.5) of 90.20% and a frame rate of 133.3 frames per second (FPS), with a model size of 5.0 MB and 7.3 GFLOPs. Additionally, SMPD-YOLO maintains strong robustness under challenging conditions, including strong illumination, low light, and image blur. Overall, the model combines high accuracy, lightweight design, and real-time performance, providing a lightweight design approach for achieving efficient leaf disease detection on resource-constrained equipment.

Research on the Configuration of the Lakeside Area Greenway Network from the Perspective of Daily Life

Huang Yimo , Tang Liwen , Xiong Yuan , Li Jingbo

Adopted date: January 11,2026

[Abstract](22) [HTML](0) [PDF 0.00 Byte](0)

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This research explores the spatial configuration of greenway networks from the perspective of everyday life, taking the lakeside area of Shahu in Wuhan as a case study. It aims to shift the traditional focus of greenways from “ecological-recreational” functions towards serving as multifunctional infrastructures that support residents’ high-frequency daily activities. Guided by Henri Lefebvre’s theory of everyday life, the study conceptualizes daily practices into four typical scenarios: commuting, shopping, recreation, and social-health activities. An integrated “point-line-weight” analytical framework is established by identifying key nodes (e.g., residential buildings, service facilities, and transport hubs), simulating multi-scenario travel routes, and qualifying vegetated corridors through Fractional Vegetation Cover (FVC) analysis. Using Urban Network Analysis (UNA) tools, path usage frequency and accessibility are quantified. A hierarchical greenway network is formed by overlaying

Comprehensive evaluation of the landscape application potential of Hubei wild plants in Wuhan

Fu Hansen , Yao Chonghuai

Adopted date: January 11,2026

[Abstract](24) [HTML](0) [PDF 0.00 Byte](0)

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To promote the development and application of wild plants in Hubei Province, and address the problem of insufficient utilization of native plants in urban landscape greening,1,000 common wild plants in Hubei Province were selected as the candidate pool to establish an evaluation model for the application potential of landscape greening, including 21 evaluation indicators and corresponding grading rules for application potential. The results showed that: (1) Based on the comprehensive evaluation

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