I. Agricultural control measures
1. Use anti-resistant (resistant) pests and improved varieties to strengthen plant quarantine, select vegetable crops for their own resistance and disease resistance, and suitable for local cultivation conditions of domestic and foreign varieties.
2. Timely cleaning of the pastoral areas After sowing, planting, or harvesting of the previous crop, complete removal of leaves, debris and debris, eradicate weeds and eradicate the host.
3. Seed disinfection treatment The best choice for seed selection is to use coated seeds when selecting seeds for seedlings. Uncoated seeds are sowed with a chemical or soaking seed before sowing. They can be used to remove or kill nematode eggs that are mixed in seeds. In the facilities where pests and diseases are endangered, plug seedlings are used to cultivate high-quality, age-appropriate seedlings.
Second, physical control measures
1. The swatch trap and kill pests hung yellow and blue plates in the greenhouse with a height slightly higher than the top of the plants. A yellow or blue plate was hung on 15 m2, and the yellow plate can effectively trap and control whiteflies, aphids, and leafminers. Insects, blue boards trap and kill pests such as thrips and fly species.
2. Insect nets to prevent pests Set 30-mesh insect nets in greenhouse vents, which can effectively prevent invading pests such as aphids, whitefly, spotted fly, and armyworm.
3. High-temperature stuffy shed to use insects full use of summer and autumn high temperature period, deep plowing the soil, smashing the ground, irrigating the water, covered with plastic film, choose the sunny cover film to close the shed for 7 to 10 days, so that the maximum temperature within the shed up to 50 °C ~ 70 °C, can effectively kill the soil and pests in the facility.
Third, biological control measures
The use of Bacillus thuringiensis (Bt) preparations to control vegetable pests in various subjects, abamectin control Plutella xylostella, spotted fly, whitefly, root knot nematode and so on.
This 50m distance measuring meter is made of two parts: the laser distance outside unit and the sole part laser measure module. Great distance range is from 3cm to 50 meters with ±1.5mm high accuracy. Digital distance measuring device is quick and reliable measure with one hand pushing the button. It is designed for hand helding, very convenient to put in your jacket pocket or trouser pocket.
1>. Easy to Use. It is very easy to learn how to use a Laser Distance Meter, it can measure distance with pressing a single button.
2>. Safety. Using a laser distance meter to measure is much safer than using a measure tape, for users do not need to climb up and down.
50M Laser Distance Measurer,Mini Laser Measurer, Laser Measure 50M,50M Laser Distance Meter
Chengdu JRT Meter Technology Co., Ltd , http://www.accuracysensor.com