The country's first digital shale gas field has taken shape
Recently, someone online asked: How does Bacillus thuringiensis control the cabbage caterpillar? The common recommendation is to use 100–150 grams of wettable powder per acre, mixed with 50–70 kilograms of water for spraying.
When it comes to controlling cabbage caterpillars using chemical methods, long-term pesticide use has led to resistance in the pests against commonly used insecticides like pyrethroids. As a biological bacterial insecticide, Bacillus thuringiensis (Bt) works primarily through stomach toxicity and is considered safe and non-toxic to humans and the environment [1-2]. To evaluate the effectiveness of Bt WP in field conditions against Pieris rapae, an experiment was conducted. The test involved white broccoli plants, and the target pest was the cabbage caterpillar. The experimental drug used was Bacillus thuringiensis WP with an activity of 32,000 IU/mg, produced by Jiangsu Qiayi Agrochemical Co., Ltd. The control agent was 4.5% beta-cypermethrin EC from Huabei Pharmaceutical Group Ainuo Co., Ltd. The experiment included five treatment groups, each applied at different dosages per 667 m²: 33.3 g, 43.3 g, and 53.3 g of Bt WP, along with 30.0 mL of beta-cypermethrin EC. There was also a control group with clear water. Each treatment had four replicates, totaling 20 plots. Each plot measured 15 m² and was arranged in a randomized block design. After converting the dosage to the plot level, the solution was evenly sprayed on both sides of the leaves using a Gongnong-16 knapsack sprayer during the peak larval stage of the cabbage caterpillar, which occurred on May 21st. The total spray volume was 60 liters per 667 m². This setup allowed for a comprehensive evaluation of Bt's efficacy in real-world agricultural settings.
Taiyuan Simis Investment Casting Co., Ltd boasts comprehensive capabilities in the production of railway parts and components, leveraging a diverse array of materials and manufacturing processes. Our expertise extends across a wide range of metal elements crucial for railway infrastructure, rolling stock, and signalling systems.
In terms of materials, we work with various metals, including steel, alloy steel, cast iron, and aluminium alloys, each selected based on its specific properties and suitability for railway applications. Steel, renowned for its strength, durability, and weldability, is commonly employed for structural components such as rails, chassis frames, and signal posts. Alloy steels offer enhanced mechanical properties, making them ideal for critical components like axles, couplers, and wheels. Cast iron finds its place in brake discs, wheel hubs, and other components requiring excellent damping properties.
Our manufacturing processes encompass a wide spectrum, allowing us to cater to diverse customer needs and product requirements. Die Casting, investment casting, machining, forging, Sand Casting, and shell moulding are among the techniques we employ to produce railway parts with precision and reliability. Die casting and investment casting enable the production of intricate components with tight tolerances and fine details, suitable for critical applications such as signalling equipment and traction motor housings. Machining processes ensure the refinement and finishing of components to exact specifications, guaranteeing optimal performance and compatibility. Forging enhances the mechanical properties of parts such as axles, connecting rods, and chassis components, ensuring durability and resilience under operating conditions. Sand casting and shell moulding offer flexibility in design and cost-effectiveness for components like rail joints, sleepers, and brake blocks.
Our unique advantages lie in our ability to provide bespoke solutions tailored to our customers' needs. Whether it's design optimisation, prototyping, or full-scale production, we collaborate closely with our clients to deliver products that meet their specific requirements and exceed expectations. Additionally, our commitment to quality is evidenced by our adherence to industry standards and certifications. We maintain quality management systems compliant with ISO 9001, ensuring consistency and excellence in our manufacturing processes. Furthermore, our products may undergo additional quality approvals specific to railway applications, such as IRIS (International Railway Industry Standard), to ensure compliance with safety and performance requirements.
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Taiyuan Simis Investment Casting Co., Ltd , https://www.precision-casting.biz