Fog is often accompanied by low temperature, high humidity, and illuminating, which affects the growth of greenhouse vegetables and is easy to induce various pests and diseases. It is recommended to increase the cover in foggy days to prevent the vegetables from being frozen. If the temperature in the shed continues to drop, manual heating is required. In the foggy days, generally do not water, to prevent the roots. If the humidity in the shed is too large, it should be ventilated and dehumidified in time. If it is not ventilated, it can be sown with grass ash or fine dry soil. To prevent vegetable pests and diseases in foggy days, use smoke-type or dust-type agents as much as possible. If spray application is used, the number of applications should be reduced as much as possible to reduce the humidity in the shed. After a continuous cloudy or foggy day, it is a sunny day. After removing the cover, pay attention to observe the change of the seedlings, find the wilting, immediately cover it, and then uncover it after the recovery of the seedlings, and then cover it with wilting, so repeated, after 2 to 3 days, Transfer to normal management.
Cold Drawn Steel Square Bar is produced by cold drawing from hot rolled steel square bar. Our advantages and more services of Cold Drawn Steel Round Bar includes:
1) Wide range of sizes from 20mm*20mm to 100mm*100mm
2) Customized Length from 100mm to 12000mm
3) Good straightness: 2mm/m max
4) Precision size tolerance: -0.1mm/+0mm
5) Anti-rusty package
6) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
7) Fast delivery time
Cold Drawn Steel Square Bar
Square Steel Bar,Cold Drawn Square Bar,1018 Steel Square Bar,Cold Drawn Steel Square Bar
SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.lerenspecialsteel.com