Spraying pesticides once a day before cultivating amaranth, 50% carbendazim or 70% carbendazim WP 500 times solution, or 50% keering WP, 50% tangling WP 1000--1500 times liquid. Spray 40--50 kg of liquid per acre, focus on spraying the soil surface around the new leaves, and spray 2 times continuously.
In the early stage of the smog chamber, the smoke method or the dust method can be used. The 10% speed Keling smoke agent can be used, 200-250 grams per mu, or 45% chlorothalonil smoke agent is 250 grams per mu, and 6-8 pieces can be distributed. Point, ignite with a dark fire, close the shed, and smoke for 3 to 4 hours.
Dust dust method spray 10% fungicide dust in the evening, or 5% chlorothalonil dust, 1000g per acre, 9--11 days, continuous or alternate with other control methods 2-- 3 times.
High speed shutter door is a rapid operating, anti-crash shutter door for indoor application . The most advantage of this door is that the opening/closing speed can reach to 0.6-1.8m/s, really fast action a lot than tranditional rollling shutter door. short opening and closing times reduce cooling loss, avoid airflow and enable a smooth operating procedure. They can also be designed in larger dimensions for the mining and aircraft industries.
High speed door can be easily installed, economical,quiet and efficient with electromechanical drive.
This door quickly though in/out open gate, ideal for warehouses,factories, hangars use, widths can be from 2m to 20 meters.
The material of this door are variety: PVC curtain to keep the insdie clean, heavy duty aluminum door with wind-resisitant function can wrok in heavy windy weather, and also the freezer door can be used in cold warehouse or somewhere like that.
Including models are:PVC High Speed Door, Aluminum Spiral High Speed Door, Self-Recovery repair door, Cold Storage Room Fast Door.
High Speed Door,PVC High Speed Door,Aluminum High Speed Door,Spiral High Speed Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffastdoor.com