Boron deficiency symptoms The deficiency of boron in fruit trees occurs first and at the growth point and on new leaves. When the grape is deficient in boron, the leaves are yellow with yellow spots, the new shoots are poorly grown, the berries are poorly developed, and the ears are of different sizes. There are more unfertilized seedless small fruit pieces in the fruit bunches, forming large and small fruits and sandwiching fruit. Boron deficiency can lead to poorly developed pear fruit, malformation, uneven fruit surface, cracks and shrinkage of the peel. The boron deficiency in the peach tree will occur in the brown cork area near the nucleus of the fruit, often cracking along the suture.
The fertilization technology uses 200 g to 250 g of boron per acre or 500 g to 1000 g of borax, and can also be combined with compound fertilizer and organic fertilizer. The application time is generally after the fruit picking, and the shun tree canopy drip line excavates a semi-circular groove with a width of 25 cm and a depth of 20 cm. The boron can also be applied in the same way before the new leaves are germinated in the next year after fruit picking. Foliar spray application of speed boron, crop absorption fast, good effect, application is also very convenient, is an important method of boron application. It is appropriate to apply 2 to 3 times throughout the growing season in the period of full bloom, early flowering and fruit setting of fruit trees. Spraying the speed of Boron is 0.1%~0.2%. The dosage is evenly sprayed and the leaves are wet. If it is rained within 4 hours after spraying, it should be re-sprayed.
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PTZ: In the security monitoring application, it is the abbreviation of Pan/Tilt/Zoom, representing the pan tilt omnidirectional (up and down, left and right) movement, lens zoom and zoom control.
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