Herbicide mixture development and mixed combination
2018-08-08 03:02:42
Mixing two or more herbicides together is called herbicide mixing. Mixing is not only a research topic for the scientific use of herbicides, but also a potential for deep development of herbicides. As early as the development of herbicides, people noticed the role of mixing.
First, mixed form
Herbicides are mixed, mixed, premixed and premixed.
1. Now mixed (mixed in the field, used in time). That is to say, it is commonly used in the current mixed use or in the current use. This method is quite common in production and flexible, and the mixed varieties and dosages can be adjusted according to specific conditions. Should be used with the mix, the formulated drug should not be stored for a long time, so as not to reduce the effect.
2, barrel mixing (factory barrel mixing, use according to the chapter). Some herbicides are inconvenient to use together, but they should indeed become a weeding companion. The manufacturers will make them into barrel mixes (tank mixes), package them separately, and bundle them for sale. The masses call it “the mother bagâ€. , the mother bottle."
The breakthrough of the domestic barrel mixture to achieve zero is in 1998, this year, Hebei Xuanhua Pesticide Co., Ltd. produced E-bowl barrel mixture (50% acetochlor EC + 75% thiophenesulfuron dry suspension), Abao barrel mixing The agent (38% atrazine water suspension + 25% sulfensulfuron dry suspension) two varieties "shining" debut, obtained the registration of the Ministry of Agriculture, the registration number is LS98476 and LS98491, respectively, the registered crops are corn , soy and corn. Since then, the company has also registered a Le barrel mix (40% B · èŽ suspension + farmers music 74.7% water-soluble granules), registration number is LS99337, registered crops for summer corn, apple orchard, citrus orchard.
At present, only one imported barrel mix is ​​registered, namely Jinyu barrel mix (Yu Nong Le 4% suspension + 38% atrazine suspension), registration certificate number is LS99019, registered manufacturer is Japan Ishihara Industry Co., Ltd. The registered crops are corn (Northeast and North China).
3, premix (factory premix, direct use). Two or more herbicides are mixed and processed into a fixed product by the factory in advance, and the user directly puts into use according to the instruction manual. For the user, the use of a mixture is no different than the use of a single dose. In the case of the distribution ratio of each group is strict, it is difficult to accurately grasp the current mixing, or the tonnage is large, or often mixed, it is appropriate to process into a mixture beforehand. If the mixture can improve chemical stability or increase solubility, it should be made into a mixture as much as possible.
Second, the development of mixed agents
A premix, which is commonly referred to as a mixture, refers to a styling preparation containing two or more herbicide active ingredients prepared by a factory for the purpose of mixing, which is also called a mixed preparation, a mixed preparation, a composite preparation, and a complex preparation. Formulations, mixtures, compounding agents, compounding agents, compounding agents, and mixtureing agents. The mixture containing the active ingredients of the two herbicides is called a binary mixture, such as 35% benzyl·wet WP; three kinds of ternary mixture, such as 10% pyrazomethane·B Wet powder; containing more than three kinds of multi-mixed agents, there are currently no products approved for registration in China.
The first domestic herbicide blend that was registered was 5.3% Ding·West Granules (1987) and the imported blend was Weiluosheng 50% EC (1984). In just over a decade, the herbicide mixture has achieved considerable development. According to statistics, there were less than 60 domestic and imported mixtures announced in China in 1990, more than 160 in 1997, 600 in 2000, and nearly 900 in 2003. .
The research and development of domestic herbicide mixture is in the ascendant and is extremely active. According to statistics, 19 domestically produced mixtures were registered in 1992, accounting for 24.1% of the total number of preparations; in 1997, the mixture was increased to 150, accounting for 36.1%; By 2003, there were nearly 900 mixtures.
Third, mixed combination
The whole formed by the combination of two or more different herbicides is called a mixed combination, such as bensulfuron-methyl + butachlor is a mixed combination, and bensulfuron-methyl + acetochlor is another mixed combination. According to statistics, as of the end of July 2000, a total of 404 domestic and foreign manufacturers registered herbicides in China, 102 single-agent varieties (active ingredients). By the end of 2003, there were more than 150 single-agent varieties (active ingredients) that had been registered in China. From a purely mathematical point of view, 102 varieties can form 5151 binary mixed combinations, which can form 171,700 ternary mixed combinations, but the actual number is far less than this number, because many mixed combinations are "unrealistic", such as grass Ling + chlorpyrifos (with sputum effect), enemy sputum + 2,4-D butyl ester (even if less than 1% of 2,4-D butyl ester in the enemy sputum can cause rice phytotoxicity).
Whether the combination of herbicides can form a mixed combination depends on the characteristics of the drug and the product traits, and is also subject to environmental conditions. For example, the combination of soybean cultivar and chlorhexidine + sike can make up for the poor control effect of chlorhexidine on broadleaf weeds such as leeks and leeks. Disadvantages, but when the soil is too strong, the organic matter content is too low or the soil is alkaline, it is not suitable to mix with Sike, otherwise it will cause phytotoxicity. It can be seen that the herbicides must be tested and demonstrated before they can be mixed.
There are many mixed mixes in the mix, and there are too many mixed combinations of bucket mixes and premixes. Among all the varieties, bensulfuron-methyl and acetochlor have the strongest compatibility, and the frequency of occurrence is high, forming a combination, such as up to 45 kinds of mixed combinations containing bensulfuron-methyl and 407 mixed products.
Herbicide premixed mixed combination statistics (as of December 2003)
Binary mixed ternary mixed
Mixed combination
Number of mixed products
Number of mixed combinations
Number of mixed products
Number of mixed combinations
Number of mixed products
Number of
164
784
47
110
211
894
Herbicide premixed compatibility capacity statistics (as of December 2003)
Active ingredient The number of mixed combinations The number of mixed products
Bensulfuron-methyl 45
407
Acetochlor 49
289
Butachlor 18
129
Methionamide 7
101
Atrazine 20
95
Herbicide premixed mixed combination list (as of December 2003)
Mixed combination Common name Number of mixed substances that have been registered
2,4-D EHE+ diflufenacil DDT · Difluoro 1
2,4-D-oxazinone + acetochlor Dipazine·B 1
2,4-butyl butyl ester + bensulfuron
Dibutyl benzene sulfonate 1
2,4-D Butyl Ester + Butachlor Drip Ding 1
2,4-D Butyl Ester + Fucaojing + Acetochlor
First, mixed form
Herbicides are mixed, mixed, premixed and premixed.
1. Now mixed (mixed in the field, used in time). That is to say, it is commonly used in the current mixed use or in the current use. This method is quite common in production and flexible, and the mixed varieties and dosages can be adjusted according to specific conditions. Should be used with the mix, the formulated drug should not be stored for a long time, so as not to reduce the effect.
2, barrel mixing (factory barrel mixing, use according to the chapter). Some herbicides are inconvenient to use together, but they should indeed become a weeding companion. The manufacturers will make them into barrel mixes (tank mixes), package them separately, and bundle them for sale. The masses call it “the mother bagâ€. , the mother bottle."
The breakthrough of the domestic barrel mixture to achieve zero is in 1998, this year, Hebei Xuanhua Pesticide Co., Ltd. produced E-bowl barrel mixture (50% acetochlor EC + 75% thiophenesulfuron dry suspension), Abao barrel mixing The agent (38% atrazine water suspension + 25% sulfensulfuron dry suspension) two varieties "shining" debut, obtained the registration of the Ministry of Agriculture, the registration number is LS98476 and LS98491, respectively, the registered crops are corn , soy and corn. Since then, the company has also registered a Le barrel mix (40% B · èŽ suspension + farmers music 74.7% water-soluble granules), registration number is LS99337, registered crops for summer corn, apple orchard, citrus orchard.
At present, only one imported barrel mix is ​​registered, namely Jinyu barrel mix (Yu Nong Le 4% suspension + 38% atrazine suspension), registration certificate number is LS99019, registered manufacturer is Japan Ishihara Industry Co., Ltd. The registered crops are corn (Northeast and North China).
3, premix (factory premix, direct use). Two or more herbicides are mixed and processed into a fixed product by the factory in advance, and the user directly puts into use according to the instruction manual. For the user, the use of a mixture is no different than the use of a single dose. In the case of the distribution ratio of each group is strict, it is difficult to accurately grasp the current mixing, or the tonnage is large, or often mixed, it is appropriate to process into a mixture beforehand. If the mixture can improve chemical stability or increase solubility, it should be made into a mixture as much as possible.
Second, the development of mixed agents
A premix, which is commonly referred to as a mixture, refers to a styling preparation containing two or more herbicide active ingredients prepared by a factory for the purpose of mixing, which is also called a mixed preparation, a mixed preparation, a composite preparation, and a complex preparation. Formulations, mixtures, compounding agents, compounding agents, compounding agents, and mixtureing agents. The mixture containing the active ingredients of the two herbicides is called a binary mixture, such as 35% benzyl·wet WP; three kinds of ternary mixture, such as 10% pyrazomethane·B Wet powder; containing more than three kinds of multi-mixed agents, there are currently no products approved for registration in China.
The first domestic herbicide blend that was registered was 5.3% Ding·West Granules (1987) and the imported blend was Weiluosheng 50% EC (1984). In just over a decade, the herbicide mixture has achieved considerable development. According to statistics, there were less than 60 domestic and imported mixtures announced in China in 1990, more than 160 in 1997, 600 in 2000, and nearly 900 in 2003. .
The research and development of domestic herbicide mixture is in the ascendant and is extremely active. According to statistics, 19 domestically produced mixtures were registered in 1992, accounting for 24.1% of the total number of preparations; in 1997, the mixture was increased to 150, accounting for 36.1%; By 2003, there were nearly 900 mixtures.
Third, mixed combination
The whole formed by the combination of two or more different herbicides is called a mixed combination, such as bensulfuron-methyl + butachlor is a mixed combination, and bensulfuron-methyl + acetochlor is another mixed combination. According to statistics, as of the end of July 2000, a total of 404 domestic and foreign manufacturers registered herbicides in China, 102 single-agent varieties (active ingredients). By the end of 2003, there were more than 150 single-agent varieties (active ingredients) that had been registered in China. From a purely mathematical point of view, 102 varieties can form 5151 binary mixed combinations, which can form 171,700 ternary mixed combinations, but the actual number is far less than this number, because many mixed combinations are "unrealistic", such as grass Ling + chlorpyrifos (with sputum effect), enemy sputum + 2,4-D butyl ester (even if less than 1% of 2,4-D butyl ester in the enemy sputum can cause rice phytotoxicity).
Whether the combination of herbicides can form a mixed combination depends on the characteristics of the drug and the product traits, and is also subject to environmental conditions. For example, the combination of soybean cultivar and chlorhexidine + sike can make up for the poor control effect of chlorhexidine on broadleaf weeds such as leeks and leeks. Disadvantages, but when the soil is too strong, the organic matter content is too low or the soil is alkaline, it is not suitable to mix with Sike, otherwise it will cause phytotoxicity. It can be seen that the herbicides must be tested and demonstrated before they can be mixed.
There are many mixed mixes in the mix, and there are too many mixed combinations of bucket mixes and premixes. Among all the varieties, bensulfuron-methyl and acetochlor have the strongest compatibility, and the frequency of occurrence is high, forming a combination, such as up to 45 kinds of mixed combinations containing bensulfuron-methyl and 407 mixed products.
Herbicide premixed mixed combination statistics (as of December 2003)
Binary mixed ternary mixed
Mixed combination
Number of mixed products
Number of mixed combinations
Number of mixed products
Number of mixed combinations
Number of mixed products
Number of
164
784
47
110
211
894
Herbicide premixed compatibility capacity statistics (as of December 2003)
Active ingredient The number of mixed combinations The number of mixed products
Bensulfuron-methyl 45
407
Acetochlor 49
289
Butachlor 18
129
Methionamide 7
101
Atrazine 20
95
Herbicide premixed mixed combination list (as of December 2003)
Mixed combination Common name Number of mixed substances that have been registered
2,4-D EHE+ diflufenacil DDT · Difluoro 1
2,4-D-oxazinone + acetochlor Dipazine·B 1
2,4-butyl butyl ester + bensulfuron
Dibutyl benzene sulfonate 1
2,4-D Butyl Ester + Butachlor Drip Ding 1
2,4-D Butyl Ester + Fucaojing + Acetochlor
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