Classification of pesticide damage to plants and measures to save them:
The phytotoxicity of pesticides to plants can be divided into acute and chronic. Acute phytotoxicity is manifested within a few hours to several days after spraying, such as leaf spots (fruits) appear spots, yellowing, chlorosis, withering, rolling leaves, deciduous fruit, constricted clusters and so on. Chronic phytotoxicity will only be manifested after a long period of time, such as weak photosynthesis, flower bud formation and delayed fruit ripening, dwarf deformity, and deterioration of flavor and color. In the event of phytotoxicity, the following measures should be taken immediately to rescue: Co.,
1. Spraying potassium permanganate: Potassium permanganate is a strong oxidant that has oxidative decomposition effects on various chemicals. Spraying 6000 times potassium permanganate solution can effectively alleviate the phytotoxicity.
2. Rinse with clean water: Most chemical agents are not resistant to water washing. If the concentration of the application is too large, the spray may be sprayed with water to the leaves of the fruit trees to wash away the residual agent on the surface of the leaves.
Third, suspend the same kind of drugs: Before the phytotoxicity has not been completely relieved, try to reduce the use of pesticides, especially the same kind of pesticides should be stopped, so as not to aggravate the phytotoxicity.
Fourth, the application of fertilizer water: fruit trees after the occurrence of phytotoxicity, combined with watering to add some quick-acting fertilizer, and then cultivating loose soil, can promote fruit trees to restore normal growth and development as soon as possible. At the same time, foliar application of 0.3% to 0.5% urea, 0.2% to 0.3% potassium dihydrogen phosphate, etc., to improve the nutritional status of the fruit trees and enhance the roots.
Total 1 | <First <Prev 1 Next> Last> |
High Speed self-Recovery Rapid doors are the technological evolution of old, PVC high speed doors or heavy folding doors, now obsolete and not suited to today's industrial needs.
High-quality panels, the resistive safety edge fitted to the bottom edge of the door, photocells and barriers make this product both safe and durable, being totally self-repairing, thanks to its special [Anti Crash System".
This door designed with a perimeter structure in galvanized or stainless steel, which is ideal for sliding panels. The door panel rides effortlessly within a track, thanks to the special profile and hinge designed by us, requiring low maintenance. The panel is rolled up on a roller placed within the upper crossbeam.
The door can be equipped with a counterweight or ups batteries, to fully open the door in case of power failure, and can also be equipped with large transparent sections to create a brighter and safer working environment.
Self-Repairing Door Curtain made of reinforced PVC, with flexible weighted soft bottom edge.
The edge of curtain has continuous injection molded teeth that then move up and down in a self-lubricating polyethylene track attached to structural galvanized side frames.
Self-Recovery Rapid Door
Self-Recovery Rapid Door,Self Recovery PVC Rapid Door,Self Recovery Rapid Rolling Door,Self Healing Roll Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com