First, the symptoms of pesticide injury performance Leaves: Spots of different colors and shapes appear (spray spots are mostly round) or scorch perforation; leaf chlorosis (such as phytotoxicity of Guangmianling to fruit trees, phytotoxicity of trichlorobenzene herbicides to crops, etc.) Yellow leaves (such as overdose with saxoxiin to yellow soybean leaves); leaf scorch (such as atrazine on the damage of wheat seedlings); leaf deformities (such as dull, pull the twisted corn leaves) As a whip, often referred to as the tail of a cow's tail); Fruit: Appearance of maces (such as brown spots, stains, etc., Bordeaux fluid can produce rust on apples or pears), abnormal fruit, fruit drop, etc. Flowers: Medications are mainly used before flowering or flowering, causing flowering, premature withering or scumming (such as Bordeaux mixture and oil emulsions that cause fruit trees to fall during flowering). Root: Causes rot or thickening (for example, sodium pentachlorophenol may damage the roots of rice, and the use of herbicides of type 2,4D during the jointing stage of rice may enlarge the stem base); Seeds: The main reason is that the germination rate is reduced (such as seed dressing double-mix wheat seeds, the drug amount of more than 0.5% will reduce the germination rate of wheat seeds). Second, remedial measures 1. Drainage and irrigation remediation: For some pesticides caused by herbicides, proper irrigation and drainage can also reduce the degree of injury, such as agricultural damage caused by irrigation can be reduced by irrigation and drainage. 2. Top-dressing remediation: Generally, it will produce phytotoxicity to the leaves, yellowing and other symptoms of the plant. Increasing the amount of fertilizer can reduce the degree of injury. 3, spray water leaching: If by the foliage and plants after spraying a pesticide and the occurrence of phytotoxicity, and found early, can be quickly sprayed with a large amount of water affected by the crop leaves, repeated spraying of water 2 to 3 times, Try to wash off the drugs on the surface of plants and increase the application of phosphorus and potassium fertilizers to promote root development to enhance crop recovery. 4, hormone remedy: For inhibiting or interfering with the herb gibberellin herbicides, plant growth regulators, such as 2.4D butyl ester, dimethyl tetrachlorine, B Healy and other agents, can be sprayed gibberellin to ease the extent of injury; If crops are harmed by pesticides such as Omethoate, a 0.2% borax solution can be sprayed on the affected crops.