Pesticide phytotoxicity refers to various pathological reactions caused by improper use of pesticides, including a series of abnormal physiological changes caused by phytotoxicity caused by tissue damage, abnormal growth, plant metamorphosis, yield reduction, production and even death. According to the speed of the occurrence of pesticides or the use of pesticides, the pesticides are classified into the following categories:
1. Acute phytotoxicity: refers to abnormal phenomena that occur within a short period of time (a few hours to 10 days) after application, such as organ shedding, withering, fading, and even death.
2, chronic phytotoxicity: refers to the abnormal phenomenon that occurs after a long time (after 10 days) after application, such as no result (out of production), high granule rate, quality decline.
3, indirect phytotoxicity (secondary phytotoxicity): refers to a certain pesticide used in the 茬 (season) crop does not produce phytotoxicity, but remains in the soil and compost (or straw), on the squat (season) ) Phytotoxicity caused by crops.
4. Residual phytotoxicity: refers to the phytotoxicity caused by the accumulation of high doses in soil and water due to the long-term continuous use of highly residual pesticides.
5. Drifting phytotoxicity: refers to the phytotoxicity caused by the action of the wind and the fineness of the fog particles, which causes the fog particles to drift away from the application target and settle to sensitive crops.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
1. Acute phytotoxicity: refers to abnormal phenomena that occur within a short period of time (a few hours to 10 days) after application, such as organ shedding, withering, fading, and even death.
2, chronic phytotoxicity: refers to the abnormal phenomenon that occurs after a long time (after 10 days) after application, such as no result (out of production), high granule rate, quality decline.
3, indirect phytotoxicity (secondary phytotoxicity): refers to a certain pesticide used in the 茬 (season) crop does not produce phytotoxicity, but remains in the soil and compost (or straw), on the squat (season) ) Phytotoxicity caused by crops.
4. Residual phytotoxicity: refers to the phytotoxicity caused by the accumulation of high doses in soil and water due to the long-term continuous use of highly residual pesticides.
5. Drifting phytotoxicity: refers to the phytotoxicity caused by the action of the wind and the fineness of the fog particles, which causes the fog particles to drift away from the application target and settle to sensitive crops.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
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