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1. Phosphamine: Peach trees are sensitive to them and should be banned.
2. Trichlorfon and dichlorvos: It has great phytotoxicity to stone fruit trees, and should not be used; it has phytotoxicity to apple varieties such as golden crown, marshal, brocade, and cockscomb; used on other apple trees, preferably in young fruit Spraying (after flowering and physiological fruiting).
3. Dimethoate and Omethoate: Apricot and Li are sensitive to emulsifiable concentrates with a dilution factor of less than 1500. When using, they should be tested in a community to determine the safe use concentration and then use them in large areas.
4, insecticidal ring: some fruit tree varieties are sensitive, must first do the phytotoxicity test before use.
5, Daofeng San: Some varieties of peach, grape, apple are sensitive to it, easy to produce phytotoxicity, not suitable for use.
6, dicofol: Hawthorn and apple red jade, Xuguang and other varieties sensitive, easy to produce phytotoxicity, not suitable for use.
7, ketone, gram: pear tree is sensitive to it, should not be used.
8. Arsenic preparations: Some varieties of stone fruits, apples and pears are prone to phytotoxicity and should not be used.
9. Bordeaux mixture: Peach, plum and hawthorn are sensitive to the growing season. No matter what kind of preparation, it is easy to cause phytotoxicity. When the lime in Bordeaux mixture is lower than the multiple amount, pear, apple and apricot are easy to produce phytotoxicity; After apple blossoms and fruit growth period, the fruit rust is heavier and should not be used; apple medicine should be used as much as possible in the later stage of growth.
10, stone sulfur mixture: peach, plum, apricot, grape, pear, etc. have a young tissue, easy to occur phytotoxicity, should be used with caution or avoidance.
11, glyphosate, gram without trace: are all herbicides, all fruit trees are sensitive to them, can not be used on fruit trees, can only be used for directional spray weeding between fruit trees. The apricot tree is sprayed with the herbicide, which is highly susceptible to phytotoxicity. It is forbidden to use this agent for weeding.
12. Atrazine: Peach trees are sensitive to them and should not be used.
13, 2.4-D butyl ester, 2 methyl 4 chlorine: all fruit trees are very sensitive to them, should not be used on fruit trees.
Second, the defense measures of orchard phytotoxicity
1. Although all kinds of pesticides are provided with instructions for use, it is generally referred to as general. In order to ensure the safety of medication, the cell test should be carried out before use. After 3 to 5 days, no abnormality occurs and large-scale use is carried out.
2. When using pesticides, it should be used strictly according to the specified use concentration and unit area. Do not increase the dosage and expand the scope of use.
3. It should be prepared and used in strict accordance with the preparation and use methods specified in the instructions, and the preparation and use methods must not be simplified.
4. Formulate and use pesticides in strict accordance with the external environmental conditions specified in the instructions to improve the quality of dispensing and application.
5. When using pesticides, pay attention to the safety interval, use period and safe withdrawal period of pesticides to avoid phytotoxicity and toxic effects on humans and animals.
First, the taboo of the orchard medication
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