In the summer, there are many hot and rainy weather in the northern regions. High temperature and high humidity are two important environmental factors that restrict the normal growth of summer vegetables. It is easy to cause undesirable phenomena such as roots and lengths of vegetables, and also creates conditions for the infestation and occurrence of pests and diseases. Pest and disease hazards: Vegetable virus disease occurs severely under high temperature, and measures such as seed dressing with new high-fat film and selection of anti-virus varieties should be adopted. Heavy rain hazard: Summer heavy rains cause the soil to be compacted, which is not conducive to seed germination. It is necessary to choose a high-dry land to build a seedbed; it is suitable to be selected from sandy loam in the rainstorm area; the drainage around the seedbed should be smooth, and the temporary cover should be used to reduce the rainstorm hazard; if the seed is not unearthed after the sowing, the seedling will be shallowly irrigated after the rain. To prevent soil panel knots. The seedlings are long: the seedlings in the hot season are very easy to grow. It is necessary to spray the foliar fertilizer with a watering can, forcing the toppings to vigorously return a large amount of nutrients, and the inertia advantage of the tip is rapidly weakened to the capping situation. Its main nutrient turns to the vegetable development system, which enhances the vitality of vegetables, avoids the phenomenon of leaf hypertrophy, and improves the permeability of the field.
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Semi Automatic Video Measuring Instrument
Features of semi-automatic image measuring instrument:
The main body of the equipment is made of high-precision natural granite, which has stable temperature characteristics and resistance to aging deformation, ensuring measurement stability and long-term accuracy.
High precision fully closed-loop automatic zoom optical lens
Telecentric optical principle: Adopting a parallel light path optical design, the size of the object's image does not change with the distance from the lens, resulting in additional measurement errors in the perspective effect.
Automatic zoom optical telephoto lens is a lens specially designed to correct the parallax of traditional lenses. It can be used within a certain object distance range to ensure that the magnification of the obtained image does not change with the change of object distance. This is an important application for situations where the measured object is not on the same surface.
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