During the cultivation of *Pleurotus ostreatus*, it's not uncommon to encounter situations where the mature mushroom bed fails to produce mushrooms, or where only a small number of mushrooms (1–2 flushes) are produced before the process stops. This issue can be caused by several factors, which are outlined below:
1. **High Material Temperature**: When the mycelium has fully colonized the substrate, if the temperature remains too high and doesn't drop sufficiently, it can prevent the formation of primordia. This is especially common in low-temperature varieties grown during autumn, as the environment may not provide the necessary cooling for fruiting.
2. **Unsuitable Environmental Conditions**: The ambient temperature may either be too high or too low for the specific variety being cultivated. If it's outside the optimal range, the mushrooms may not form at all or the growth will be irregular. High temperatures often occur in spring, summer, and early autumn, while low temperatures tend to affect crops during colder months.
3. **Insufficient Accumulated Heat**: In cold conditions, the mycelium grows slowly, and even though the colonization period is long, the lack of effective accumulated heat prevents the mycelium from reaching physiological maturity. Additionally, large temperature fluctuations before fruiting can also hinder the process.
4. **Low Moisture Levels**: During the spawn run phase, excessive exposure of the substrate, poor covering, or inadequate moisture in the soil can lead to dehydration of the culture material. After the first flush, if the mushroom bed isn't properly rehydrated, it can result in poor or no further mushroom production.
5. **Excessive Mycelium Growth**: If the moisture content in the substrate is too high, the surface of the mushroom bed can become overly humid, reducing the wet-dry cycle that encourages fruiting. This can cause the mycelium to grow excessively, forming a thick fungal layer on the surface that inhibits mushroom development.
6. **Pest and Disease Infestation**: Contamination from bacteria or pests can interfere with the normal growth of *Pleurotus ostreatus*. Bacteria compete for nutrients and may release harmful substances, while pests can damage the mycelium, causing it to collapse or lose water. These issues can occur at any stage of the cultivation cycle, leading to reduced yields or total failure.
7. **Poor Ventilation**: Inadequate airflow can lead to high carbon dioxide levels, low oxygen supply, and weak lighting—conditions that are unfavorable for mushroom formation. This problem is more common in underground growing facilities where natural ventilation is limited.
To avoid these issues, careful monitoring and management of environmental conditions throughout the growth cycle are essential. Adjusting temperature, humidity, light, and air exchange according to the needs of the oyster mushroom at each stage can significantly improve yield and quality. With proper attention, growers can ensure consistent and successful mushroom production.
Low-Pressure Motor Parts
This classification mainly includes the aluminum low-pressure casting Machinery Parts using in motor area.
Normal raw material: A356.ZL101A.ZL101.AlSi7Mg
The pressure on the surface of the molten metal is 0.06~0.12Mpa.This processing has good shrinkage, casting tissue is dense, easy to produce the large thin-walled complex parts, the casting head is not needed , metal yield can be up to 95%.
Process Technology: Low-pressure casting,T6 Treatment,Shot Blasting,NC Machining,Spray Coating
Product Dimensions: Customized
Casting General Tolerance: Grade GBT6414-CT8
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
Application: Machinery Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB NingboAluminum Low-Pressure Motor Parts,Al Low-Pressure Casting Motor Parts,Low-Pressure Casting Motor Parts
NINGBO ZHENHAI BOLANG METAL PRODUCTS FACTORY , https://www.casting-part.com