A dynamic management strategy for water and fertilizer application based on morphological characteristics was developed to enhance use efficiency (WUE) fruit yield in greenhouse-cultivated tomato (Solanum lycopersicum L.). Multivariate regression analysis employed determine the baseline requirements evaluate effects of varying irrigation fertilization regimes WUE. coupled irrigation–fertilization experiment conducted, models were established describe changes stem diameter plant height under...

Since plug seedling plays a key role in automatic transplanting, this work aimed to explore the effect biochar has on root growth of seedlings. The physicochemical properties tests showed that addition peats could increase porosity, pH, and EC values substrate, substrates treated with 0%, 10%, 20%, 30% meet requirements raising. water retention substrate was superior proportion, nitrogen release significantly decreased proportion. Our results demonstrated 10% biochar-treated apparently...

Automating vegetable seedling transplanting has led to labor-saving opportunities and improved productivity. Some changes in agronomy are necessary for efficient transplanting. In this study, the local nursery substrates were added with herbaceous peat, sphagnum coir respectively. Effects of new compound investigated on growth qualities root substrate strength. results, we found that addition three mediums significantly affected physiochemical properties original substrates. Under same...

To address the issue of single-crop adaptability current head-forming leafy vegetable harvesters in China—which limits their ability to harvest multiple varieties—a universal cabbage–Chinese cabbage harvesting platform was designed. This design based on statistical analysis physical and planting parameters major Chinese varieties Jiangsu Zhejiang provinces. The adopts a modular design, enabling both by replacing specific components adjusting relevant parameters. Through theoretical key...

Fish is one of the important sources energy and protein, proper water temperature key to successful fish breeding. The authors this study evaluated crucian carp growth, mucus antibacterial properties, immune indicators at 17, 21, 24, 27, 31 °C. results indicated that in range 17–31 °C, resistance epidermal Vibrio harveyi decreased with rising. At 24 27 activities lysozyme catalase significantly increased; alkaline phosphatase activity, superoxide dismutase total protein concentration first...

In order to solve the problem of low recognition rates weeds by a single feature, method was proposed in this study identify Asparagus (Asparagus officinalis L.) field using multi-feature fusion and backpropagation neural network (BPNN). A total 382 images competing with asparagus growth were collected, including 135 Cirsium arvense (L.) Scop., 138 Conyza sumatrensis (Retz.) E. Walker, 109 Calystegia hederacea Wall. The grayscale extracted from RGB 2G-R-B factor. Threshold segmentation image...

Airborne fungal spores have always played an important role in the spread of crop diseases, causing great concern. The traditional microscopic spore classification method mainly relies on naked eye observations and by professional technical personnel a laboratory. Due to large number captured, this is labor-intensive, time-consuming, inefficient, sometimes leads huge errors. Thus, alternative required. In study, was proposed identify airborne disease from greenhouse crops using digital image...

The rapid and sensitive detection of plant-growth-regulator (PGR) residue is essential for ensuring food safety consumers. However, there are many disadvantages in current approaches to detecting PGR residue. In this paper, we demonstrate a highly method by using terahertz time-domain spectroscopy combined with metamaterials. We propose double formant metamaterial resonator based on split-ring structure titanium-gold nanostructure. composed nanostructure polyimide film as the substrate....

Airborne diseases are likely to cause crop yield reduction, which has aroused widespread concern. In this study, a two-stage separation-enrichment structure microfluidic chip with compound field for separation and enrichment the greenhouse crops airborne disease spores directly from gas flow was developed. The is mainly composed of three parts: arc pretreatment channel, semicircular electrode collection tank. COMSOL 5.1 software used simulate designed chip. 30 µm particles were represent P....

The pick-up device is the key to develop automatic transplanting, thus a whole row pneumatic seedling was developed with reciprocating movement. In order low-damage and high-efficiency picking, six or eight end-effectors were installed in device. We planned required picking-trajectory by polynomial fit, then consistency of simulated trajectory theoretical verified. air cylinder photoelectric sensor used control motion end-effector, coordinated scheme transporting, picking dropping designed...

Abiotic and biotic stresses both decrease the quality quantity of cultivated plants. In this study, in order to see responses cucumber plants drought stress downy mildew infection, infestation at different two levels, B1 (disease infestation) B2 (no disease infestation), along with three fertigation requirement full T1, moderate nutrient solution deficit T2 severe T3, were applied a greenhouse. Thus, six treatments, i.e., B1T1, B1T2, B1T3, B2T1, B2T2 B2T3, set. The leaf gas-exchange...

In order to improve the yield of cucumber and ensure food safety by investigating response nutrient stress, especially compound gas-exchange growth parameters, biomass, root development were measured compared. The results showed that compared with control (CK), different treatments had effects on these under short-term nitrogen (N) or potassium (K+) lateral roots hair was promoted. research stress provided a basis for establishing reasonable irrigation strategies as well improvement...

Since the current clamp-type and push-out-type seedling picking method brought damage to seedlings, this study aimed proposed an airflow ejection-wrapped clamping type method, which used eject out seedlings were wrapped clamped reduce of during process. The parameter model was established through theoretical design, then parameters optimized coupling simulation analysis, validity these verified experiments. We found that diameter nozzle selected as 3.5 mm match with drainage outlet plug...

Efficient greenhouse production has a great supporting role in the development of vegetable agricultural and sideline product processing. In this paper, simplified automatic transplanting device was designed evaluated laboratory. The mainly consists seedling pick-up gripper, manipulator, two conveyors control system. flexible multi-pin gripper to effectively grasp, hold, release seedlings. Through combination innovation linear modules, manipulator move desired working position. were...

Since plug seedlings play a key role in automatic transplanting, this work aimed to explore the interaction between biochar rate, water content, and N–fertilization substrate on cultivation of cucumber before after transplanting. The research showed that most factors obtained significant individual effects by measuring analyzing growth parameters Most significantly decreased with increase rate except Water Use Efficiency which highest value 2.06 g/L when was 10%. Furthermore, some increased...

Aim of study: To develop a whole row automatic pick-up device using air force to blow out plug seedlings, avoid the damage seedlings that current way seedling picking by needle insertion induces.Area Jiangsu Province, China.Material and methods: We designed which mainly consists transporting device, loosening clamping an control system. The rate was significantly reduced success increased new method end-effectors. A prototype produced according calculation results, performance tests were...

Since the characteristics of plug seedlings affect effectiveness automatic transplanting, this study aimed to explore effect addition biochar into substrates on growth before and after transplanting. The physicochemical properties with 0%, 5%, 10%, 15%, 20%, 25% all met requirements seedling cultivation. trend, root systems, mechanical transplanting leaf gas exchange parameters were measured in study. results indicated that cultivated 10% added substrate achieved best trend physiological...

The uniformity of the cultivation environment in a micro-plant factory plays critical role ensuring consistent growth seedlings, and an optimal airflow pattern is key to maintaining environmental uniformity. This study applied computational fluid dynamics (CFD) modeling compare effects six different ventilation modes on microclimate within space. In cases 1 2, inlet was positioned at top, while outlets were located both bottom top side walls. For 3 6, side-inlet side-outlet system employed...

The operational performance of cereal seeding machinery influences the yield and quality cereals. In this article, we review existing literature on intelligent technologies for machinery, encompassing active controllable actuators, rate control, seed position control systems. manuscript, (1) characteristics innovative structures motor-driven seed-metering devices ground surface profiling mechanisms are expounded; (2) state-of-the-art detection principles applications soil property sensors...