Calcium deficiency in apple is a problem often encountered by fruit growers in the production process. Due to the diversity of causes of calcium deficiency in apple, it is not easy to control. Recently, the reporter interviewed Professor Lei Zongzhong, a fruit expert from the Yangling Vocational and Technical College, and asked him to support the fruit farmers.
1. Get out of the mistakes of chemical fertilizers. Autumn basal fertilizer, mainly farmyard manure and high-quality organic manure, applies 30 to 40 kilograms of silicon-calcium fertilizer per acre (such as calcium magnesium phosphate fertilizer, superphosphate, etc.), and increases fertility by increasing soil organic matter and microelements. Increases the effective calcium content in the soil. Lei Zongzhong reminded farmers that calcium ions are transported slowly in the tree body and may not produce significant results in that year. However, persisting for several years can fundamentally solve the problem of calcium deficiency in apples.
2. Calcium. In March, the first peak of the root growth period, followed by calcium nitrate 20 to 25 kg per mu for the soil calcium. At the same time, in the apple germination, flowering, flowering, young fruit, after the bag of 300 amino acid spray 300 times 5 to 6 times for the foliage to make up for calcium, then you can receive good results.
3. Keep the water holding capacity of the soil at 60% to 70%. Drain the water in the rainy season to prevent water accumulation under the trees.
4. Apple's pre-harvest fruit expansion period, encountered a long period of rainy weather, it is necessary to seize the day without rain, grab the time to spray 300 times amino acid calcium, fruit-based spray wet fruit bag.
5.Before harvesting the apples, use 300~400 times amino acid calcium solution to spray fruit or wash fruits before storage to prevent red spots, black spots, bitter pit disease, molting, molting, water heart disease and other symptoms during storage period. .
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The Bullet Camera is one type of the surveillance CCD cameras. The Bullet Camera has a rectangular parallelepiped appearance, and the front side is a C/CS lens interface(the Bullet Camera does not include a lens).
The Bullet camera is powerful, widely used and high cost performance. With the security surveillance camera applied extensively and deeply, such functions as the high-definition imaging technology, high-definition through-fog function, infrared detection and lock, day and night conversion infrared camera shooting function, have been widely used in the TV surveillance projects. The day-night conversion infrared camera shooting function of the Bullet Camera enables the camera to detect infrared rays in the day-night conversion mode and realize the filter switch, which can solve the frequent day-night conversion problem of the ordinary day-night cameras, and can effectively reduce image noise in low-light environments at night and improve the image quality.
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