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(1) Pharmacy properties: Generally speaking, antibiotics and biomimetic pesticides are not easy to produce phytotoxics, such as squid, avermectin, pyrethroids, etc.; inorganic agents are not as safe as organic agents; oils and emulsions are easy to produce drugs. Harm, wettable powder, milk powder and granules are safer. Improper use of herbicides and plant growth regulators can cause phytotoxicity.
(2) Crop resistance: Different crops have different sensitivity to pesticide performance and resistance. For example, trichlorfon is commonly used to control a variety of crop pests and diseases, but is sensitive to sorghum and prone to phytotoxicity.
(3) The sensitivity of crops to pesticides is different at different stages of growth. Generally speaking, seedling stage, booting stage, flowering stage and other growth stages and young tissues have poor resistance and are prone to phytotoxicity;
(4) Physiological characteristics and morphological structure of crops: Generally, the waxy layer is thick, the hair is thick, the cell wall is thick, and the pores are less resistant, and vice versa;
(5) Environmental conditions: Generally, when the temperature is high and the light is strong, phytotoxicity is easy to occur, and vegetables are prone to phytotoxicity in the case of soil drought.
Huaxian County Station
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Several major factors that cause phytotoxicity
In addition to the use of sterilized drugs indiscriminate use and indiscriminate use of drugs, the following major factors induce the occurrence of phytotoxicity:
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