Prevention of corn leaf spot disease
The disease mainly infects the leaves, but also invades the leaf sheath and temporal lobe. The suitable onset temperature is 20-25 °C. The number of rainfall days and rainfall in June-August is the decisive factor in the severity of the disease.
Control methods: Breeding and sowing of high-quality maize inbred lines and hybrids. Seedling transplanting, reasonable dense planting and intercropping, formula fertilization, early fertilizer, timely spraying foliar nutrients. Pay attention to drainage and irrigation, clean the countryside, implement rotation.
Spray 50% of 600 ton solution, or 25% of benomyl EC 800 times, or 40% to 800 to 1000 times of EC such as 2-3 times, alternating between 7 and 15 days. Before the dense close, spray even enough spray.
At present, the heat metering market commonly used heat table is divided into mechanical heat meter(mechanical heat metering) and ultrasonic heat meter.The mechanical heat meters is consist of temperature sensor, flow sensor and calculator. With the aid of the temperature sensor, The mechanical Heat Meters measure the inlet water and return water temperature. Flow rate sensor measures the volume rate of the hot water in the tube trough the time difference. The figures recorded will be delivered to integral calculator which calculates the total heat and displays.
The mechanical heat meters sensors measures the flow rate through the circles of the wheels. According to the specification, The DN can be ≤40mm and ≥50mm. According to the inner structure, the small size mechanical heat meters can be single jet and multi jet. At present, our mechanical heat meters belong to single jet mechanical heat meters and they have higher request from the water quality. According to the counter of the flow sensor, the mechanical heat meters can be dry and wet type. Our mechanical heat meters are the dry type.Except mechanical heat meters,the plastic heat meter is also a good product.
Mechanical Heat Meters,Mechanical Heat Energy Meter,Mechanical Digital Meters,Mechanical Heat Metering,Plastic Heat Meter
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