**I. Cultivation Conditions**
Peanut farming areas should be located in regions with clean air and environmental conditions that meet national air quality standards. The soil should be a loamy or sandy clay type, with good structure, high permeability, and no contamination. The irrigation water must also be free from pollutants, ensuring a sustainable and high-quality production environment for peanuts.
**II. Variety Selection**
Choosing the right peanut variety is crucial for high yield and quality. It should be resistant to diseases, have good yield potential, and produce high-quality nuts. Recommended varieties include Fenghua No. 5, Huayu No. 22, Huayu No. 24, and Huayu No. 21, which are known for their superior traits and adaptability to different growing conditions.
**III. Crop Rotation**
Peanuts are heavy feeders and prone to pests and diseases, which can reduce yield and quality. To maintain soil health, it's recommended to rotate crops every 2 to 3 years. Common rotations include wheat, corn, sweet potatoes, and vegetables. After harvesting the previous crop, fields should be cleaned and prepared for plowing to ensure optimal conditions for the next planting cycle.
**IV. Fertilization**
For general fertility levels, applying organic fertilizer at 15,000–22,500 kg per hectare (with at least 0.2% nitrogen content), along with 75 kg of biofertilizer and 300 kg of compound fertilizer (NPK 15%) per hectare, is ideal. If the soil has higher organic matter (over 10 g/kg), use 11,250 kg of organic-inorganic biological compound fertilizer. A balanced fertilization approach ensures proper nutrient supply for healthy plant growth.
**V. Sowing Techniques**
1. **Seed Selection and Preparation**
Use clean, full, and disease-free seeds with over 95% purity and 98% cleanliness, and moisture content below 8%. Germination rate should exceed 80%, with a minimum of 375 kg per hectare. Soak seeds in 40°C warm water for about 30 hours, then dry them in the shade before planting. This helps reduce pests and improves seed vigor.
Trace element fertilizers like ammonium molybdate and borax can enhance productivity. Apply through soaking, seed coating, or foliar spraying.
2. **Planting Methods**
Sow when the soil temperature reaches 15–18°C at a depth of 5–10 cm, typically between mid-March and early April for spring peanuts, and mid-May for summer planting. For double-row ridge planting, adjust spacing to 80 cm between ridges, 18–20 cm between plants, and 35–40 cm between rows. Cover with plastic film to retain moisture and improve growth conditions.
**VI. Field Management**
1. **Seedling Care**
After emergence, cover the seedlings with a small mound of soil to help them break through the film. Ensure the cotyledons are lifted above the membrane to promote healthy growth.
2. **Mid-Season Nutrient and Water Management**
During flowering, irrigate if soil moisture drops below 50% of field capacity. Apply superphosphate, ash, or gypsum to supplement nutrients. Control flower needles by shaping the ridges into an “N†or “W†shape, which helps manage pod development and reduces moisture stress.
During the fruiting stage, ensure proper watering and earthing up to support pod formation. Avoid excessive moisture, especially in autumn, to prevent rot and reduce pest infestation.
3. **Post-Fruiting Care**
Spray urea or superphosphate solutions on leaves during the fruiting period to maintain leaf health. Adjust irrigation based on soil moisture to avoid overwatering, which can lead to root issues and poor pod development.
**VII. Integrated Pest and Disease Control**
In northern regions like Shandong, common diseases include leaf spot, viral infections, and root-knot nematodes. Pests such as aphids, bollworms, and field mice require regular monitoring. Use integrated control methods, including ecological practices and safe chemical applications. For example, apply phoxim EC for grubs, anti-indolyl WP for locusts, and BT for caterpillars. Use chlorothalonil for leaf spot and microemulsion for nematode control.
**VIII. Timely Harvesting**
Harvest when the plant turns yellow and the pods mature. Early harvest may reduce yield and quality, while late harvest increases the risk of pod drop and damage from pests. Proper timing ensures maximum yield and quality, making the harvest more efficient and less labor-intensive.
Valve Part
This classification mainly includes the die casting Machinery Parts using in Valve area.
In the die casting process,higher specific pressure is required, so that higher filling speed can be gotten.which is helpful for alloy to overcome mold filling resistance.and effectively fill each part of the cavity.The Casting General Tolerance is Grade GB-CT4.
Process Technology: High pressure die casting,Shot Blasting,NC Machining,Spray Coating
Product Dimensions: Customized
Casting General Tolerance: Grade GB-CT4
Flow Processes: Die casting, Degating to remove the residual of the gate, Polishing and Deburring to remove the burrs, Polishing to remove the parting line, flash,CNC Turning, Cleaning, Packaging, Storaging, Shipping
Control Measure: Incoming Material Test, First Article inspection, Routing inspection, Final item inspection, and Outgoing quality control
Inspection Equipment: CMM, Caliper, Plug Gage, Screw Gauge,Direct Reading Spectrometer
Application: Machinery Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB Ningbo
Aluminum Die Casting Valve Part,Zinc Die Casting Valve Part,Al Die Casting Valve Part,Malaysia Die Casting Valve Part
NINGBO ZHENHAI BOLANG METAL PRODUCTS FACTORY , https://www.casting-part.com