The ginger field showed signs of stagnation after herbicide application, with stunted growth observed in some plants. Leaves exhibited yellowing, necrotic spots, localized dryness, and slight stem shrinkage and bending. Root development was also poor, significantly affecting the overall yield. It is crucial to use **pesticides** properly to avoid such issues.
Here are some recommended practices:
1. **Before sowing**: Apply metolachlor or alachlor as a pre-planting treatment.
2. **Pre-emergence seedlings**: Use oxaline, chlorpyrifos, herbicide ether, butachlor, or chlorpyrifos for effective weed control. However, in sandy soils, reduce the application rate accordingly.
3. **After seedling emergence**: Apply chlorofluorophenoxyacetic acid through directed spraying.
Proper use of **herbicides** is essential, and the following guidelines should be followed:
1. **Control the amount and concentration**: Ensure even spraying by maintaining a steady walking speed, manually adjusting spray width, and keeping the application uniform.
2. **Be aware of crop sensitivity periods**: Avoid applying herbicides during critical growth stages when crops are more vulnerable.
3. **Avoid random or excessive use**: Herbicides must be applied according to instructions to prevent unnecessary damage.
4. **Technical operation points**:
- **"One level"**: The field should be well-prepared, with a flat surface, no large clods or depressions.
- **"Two uniforms"**: The herbicide mixture should be evenly prepared, and the spray or toxic soil application should be consistent.
- **"Three accuracies"**: Accurate timing, accurate dosage, and accurate area coverage. For example, 150–180 ml of 33% weeding emulsifiable concentrate per acre mixed with 60 liters of water should be sprayed before the ginger seedlings emerge.
In case of herbicide phytotoxicity, it's important to strengthen field management. Combine watering with increased use of quick-acting fertilizers like urea. Loosen the soil through cultivation to break up compaction, improve soil permeability, increase ground temperature, and promote beneficial microbial activity. This helps accelerate nutrient decomposition and improves root absorption of water and nutrients, aiding plant recovery.
Additionally, apply a foliar spray of 1%–2% urea or 0.3% potassium dihydrogen phosphate solution at 30–50 kg per mu. According to the **China Pesticide Network**, using Yingtian No. 2 multi-functional biological preparation diluted 600 times can help restore plant growth and support healthy development.
Guide Ring
Guide Ring is a mechanical seal, also known as a guide ring. It is usually made of metal or plastic and used to support and position pistons or rods. Guide Ring has excellent wear resistance and corrosion resistance, which can effectively reduce leakage and friction, thereby extending equipment life. Guide Ring is widely used in the hydraulic, pneumatic, mechanical, and automotive industries as an important mechanical seal.
The classification of Guide Ring can be divided by material, structure, and purpose. According to material classification, Guide Rings are mainly divided into metal Guide Rings and plastic Guide Rings. Metal Guide Rings are usually made of metals such as copper, iron, and stainless steel, which have high strength, wear resistance, and high-temperature resistance; The plastic Guide Ring is usually made of polytetrafluoroethylene (PTFE), nylon, polyimide and other materials, with good corrosion resistance and low friction coefficient.
According to structural classification, Guide Rings are mainly divided into unidirectional Guide Rings and bidirectional Guide Rings. A unidirectional guide ring can only withstand pressure in one direction and is typically used in hydraulic and pneumatic systems; The bidirectional guide ring can withstand bidirectional pressure and is typically used in the mechanical and automotive industries.
According to usage classification, Guide Rings are mainly divided into piston Guide Rings and rod Guide Rings. The piston guide ring is usually used to support and position the piston, preventing friction and leakage between the piston and the cylinder liner; The rod guide ring is used to support and position the rod, preventing friction and leakage between the rod and the seal.
In summary, Guide Ring is an important mechanical seal with a wide range of applications. Guide Rings with different materials, structures, and uses have their own characteristics and advantages. Choosing the appropriate Guide Ring can effectively improve the performance and lifespan of the equipment, reduce maintenance costs and failure rates.
Wearing,Guide Ring,Guide Strip
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