Technical regulations for weed control in peanut fields in Shandong Province

The main control object

Gramineous weeds: crabgrass, goosegrass, setaria, valerian, glutinous rice, reeds, etc.

Broad-leaved weeds: iron amaranth, amaranthus retroflexus, acerola, wrinkled fruit amaranth, purslane, ramie, peony, pinellia, field bindweed, bowl blossom, duckweed, rice straw grass, lotus root , green barnyard, horse racing, small urn, morning glory, burdock, etc.

Cyperaceae weeds: Aconite, Huang Yingcao and so on.

Comprehensive treatment technology

Taking plant quarantine as a precondition, measures such as ecology, agriculture, plastic film, and chemistry should be adopted in accordance with local conditions to coordinate with each other to control the occurrence and harm of weeds economically, safely, and effectively.

Phytosanitary

When peanuts were introduced, strict quarantine was conducted to prevent the introduction of dangerous weed seeds.

Ecological measures

Coverage is used to cover the use of comminuted wheat straw, comminuted grass, and foliage to effectively control the weed growth and growth. In general, 150kg to 200kg of crushed wheat straw can be covered per 667m2.

Agricultural measures

The use of agricultural measures to control weeds is one of the indispensable ways in the comprehensive control system of peanut fields. In the process of peanut cultivation, it must be run through every production stage.

Comprehensive measures

The use of selected seeds, the application of decomposed organic fertilizers, the removal of weeds along the side of the trenches and other measures to reduce weed seeds.

Mechanical weeding

There are spring sowing fields in autumn and winter early plowing, summer sowing field before planting, moderate deep plowing, seedling mechanical cultivator and so on. Spring sowing and field tillage decreased by 24.5% compared with spring weeds. With the addition of fertilization materials, appropriate deep plowing, tillage depth can be 30cm ~ 50cm.

Manual weeding

Manually kill weeds by weeding, weeding, cultivating and weeding with agricultural tools.

Rational rotation

The use of planting spring peanuts, wheat and corn for three years will help change the weed population, reduce the accompanying weed population, effectively reduce the weed base, and control weed damage.

Membrane measures

1 Peanut ridge under suitable soil moisture conditions, flat and thin, covered with herb film or colored film on the surface of the soil, closed sowing line, membrane and soil tight, peanut drilling on demand. When the two films are covered, be careful not to pull the film to prevent it from affecting the weeding effect.

2 The herbicide film is a plastic transparent film containing herbicides. It is the side that uniformly dissolves or sprays the herbicides on the plastic film after dissolving certain active ingredients. The medicine on the film is under conditions of certain humidity and water droplets. They are transferred to the surface of the soil or infiltrated to a certain depth to form a drug layer to exert herbicidal action.

3 The colored film is a mulch film that does not contain light (black, gray, green, etc.) that is basically opaque to herbicides. By using the characteristics of basic light transmission, some weed seeds cannot germinate and become unearthed, and some of them can germinate and excavate without sunlight. It cannot grow either.

Chemical measures

Weeds are killed by chemical herbicide soil treatments or stem and leaf treatments using soil and spatial disparities in peanuts and weeds.

The herbicide species registered in the peanut field was selected. According to the dominant weeds in the field, select suitable herbicides. Before herbicides are used, the instructions for use should be read in detail, and the herbicide dosage, application period, etc. specified in the specification should be followed. The use of paraquat is prohibited on sandy soil. In different years, herbicides should be used in rotation. The use of herbicides should comply with the provisions of GB/T 8321.

The amount of water sprayed by the vehicle-mounted sprayer is generally 15kg to 30kg per 667m2, and the amount of water sprayed by the artificial knapsack sprayer is generally 30kg to 50kg per 667m2.

For the different sowing methods of corn and different grassy fields, it is recommended to use the following herbicides and dosages for control.

Spring field sowing control measures

Soil treatment

1 For plots with grassy weeds as the dominant population, each 667m2 can be selected as follows: 48% Alachlor EC 250mL~300mL, or 72% IPC 120mL~150mL, or 72% Meturazine EC 120mL～150mL, or 96% S-metolachlor EC from 60mL to 80mL, or 33% Pendimethalin EC from 150mL to 200mL, or 48% Seculin EC from 200mL to 250mL, or 50% Naprofen EC from 120mL to 150mL , Or 50% paracetamol WP 100g ~ 150g, or 48% trifluralin EC 100mL ~ 150mL, uniform spray treatment. Trifluralin is generally treated with alum in the soil prior to sowing in order to prevent its volatilization and photolysis.

2 The plots with broad-leaved weeds as the dominant population can be selected for each 667m2: 25% chlorofossilone EC 100mL-150mL, or 24% oxyfluamethacin EC 40mL-50mL, or 50% propionyl fluoride Amine wettable powder 6g ~ 8g, or 50% prometryne wettable powder 100g ~ 150g, uniform spray treatment.

3 The plots with more grassy weeds and broad-leaved weeds can be selected for every 667m2: 45% acetabular EC from 150mL to 250mL, or 36% ketoxime EC from 200mL to 250mL, or 500g/L. Acetochlor EC 60 mL~80 mL, or 40% oxyacetochlor EC 100 mL~120 mL, or 50% thiophene B EC 80 mL~100 mL, or 51% isopropyl isothiocyanate EC 100 mL~150 mL, can also be selected The above two types of agents of grasses and broad-leaved weeds are mixed, and the amount of mixed drugs is slightly lower than that of single drugs. It is advisable to conduct a community experiment to determine the optimal dosage of the compound.

Stem and leaf treatment

Peanut 3 to 5 leaf stage, weeds 2 to 5 leaf stage, stems and leaves evenly sprayed.

1 Control of annual grass weeds, each 667m2 were selected: 5% quizalofop EC 50mL to 90mL, or 15% fluazifop EC 40mL to 80mL, or 10.8% fluphanopyrrolone EC 30mL~ 40mL, or 20% cinnamizine engine oil emulsion 66mL ~ 120mL, or 12% clethodim EC 30mL ~ 40mL, or 6.9% benzothiazolone gargle emulsion 45mL ~ 70mL. Weeds are low in leaf age, and weeds are high in leaf age. For the prevention of perennial weeds such as reeds, bermudagrass, and imperatae, the above-mentioned agents may be used, and the dose may be appropriately increased.

2 Control of annual broad-leaved weeds, each 667m2 can be selected: 21.4% acifluorfen aqueous solution 60mL ~ 80mL, or 48% antiseptic pine water 150mL ~ 200mL, or 24% milkfloxacin EC 15mL ~ 20mL, or 20% ethyl flufenoxate EC from 20mL to 30mL, or 25% FCS from 50mL to 60mL. Weeds are low in leaf age, and weeds are high in leaf age.

3 Control Aconite and Cyperus rotundus, each 667m2 can choose: 48% antiseptic pine water agent 150mL ~ 200mL, or 240g/L methylimidazole niacin aqueous solution 20mL ~ 30mL.

4 More plots of grass weeds and broad-leaved weeds can be selected for each 667m2: 10.8% lactofruloquine EC 50mL~60mL, or 7.5% flucaoxolide EC 100mL~120mL, or 6 % 60g~80mL of fluorofluazuril EC can also be used in combination with the above two types of agents for controlling grasses and broad-leaved weeds. The dosage of mixed drugs is slightly lower than that of single drugs, and it is advisable to conduct cell trials to determine the optimal compounding dose. .

4.5.2 Spring filming and field protection measures

Peanuts were soil treated before seeding. The use of the same herbicides for spring-coated peanuts and summer peanuts was 1/3 to 1/4 lower than that for exposed spring peanuts.

For plots with grassy weeds as the dominant population, each 667m2 can be selected as follows: 48% Alachlor EC 150mL~200mL, or 72% Propyl EC 100mL~150mL, or 72% Metolachlor EC 100mL -150 mL, or 96% spermidine, 45 mL to 60 mL, or 33% pendimethalone, 130 mL to 150 mL, or 48% securidine EC, 150 mL to 200 mL, or 50% naphthyridine EC, 100 mL to 120 mL, Or 50% paracetamol WP 100g ~ 150g, or 48% trifluralin EC 100mL ~ 150mL, uniform soil spray treatment. Trifluralin is generally treated with alum in the soil prior to sowing in order to prevent its volatilization and photolysis.

For plots with broad-leaved weeds as the dominant population, each 667m2 can be selected from 25% chlorofossilone EC 70mL to 100mL, or 24% oxyfluamethacin EC 35mL to 45mL, or 50% Proflufenacil. Wettable powder 6g ~ 8g, or 50% paracetamol wettable powder 100g ~ 125g, uniform spray treatment of the soil.

There are more plots of grass weeds and broad-leaved weeds. Each 667m2 can be selected: 45% fluocinol EC 100mL~150mL, or 36% DF acetochlor EC 150mL~200mL, or 500g/L. Acetochlor EC 40mL~60mL, or 40% oxyacetochlor EC 80mL~100mL, or 50% thiophene B EC 60mL~80mL, or 51% isopropyl Isoflux EC 80mL~100mL, can also be used above The above-mentioned two types of agents for controlling grasses and broad-leaved weeds are mixed, and the amount of mixed drugs is slightly lower than that of single drugs. It is advisable to conduct a community experiment to determine the optimal mixed dose.

Xia Tiantian Chemical Defense Measures

The suitable time for the chemical weeding of summer peanuts is the treatment of the soil with chemicals before seeding. If the seedlings cannot be controlled beforehand, they may also be treated to prevent weeds after the emergence of peanuts. When selecting the summer peanut field herbicides, attention should be paid to the effect of the pesticides on the crops (such as wheat).

Pre-emergence soil treatment after sowing: herbicide types, amounts, and soil treatment methods, with the film spring sowing peanut field.

After the emergence of stem and leaf treatment: herbicide types, dosage and stem and leaf processing methods, with the open field sowing peanut field.

Wheat field protection measures

Chemical weeding in wheat field interplanting peanuts is divided into two methods: sowing tape application and wheat stubble application:

1 The seeds will be sown between the rows of peanuts or the wheat yellow water before the harvest. Peanuts will be sown in mid-and late May. After sowing, the herbicides will be sprayed on the soil.

2 After the harvest, the stubble is removed, the remaining weeds in the field are removed, and the herbicide is sprayed on the stubble. The herbicide dosage was calculated based on the actual area of ​​the peanut sowing zone and the wheat bran zone, and the surface layer of the soil was evenly sprayed. After the wheat is harvested, if it is not extinguished, use 20% paraquat solution 150mL~200mL per 667m2 to mix with the soil-treating herbicide. A protective cover should be added on the sprinkler, and the peanuts should be sprayed in a directed manner to avoid spraying the liquid to unearthed peanuts. Stems and leaves.

3 Wheat field interplanting peanut chemical weeding, soil treatment selection of herbicide varieties and dosage is the same as pre-emergence soil treatment in summer sowing peanut field.

Precautions

Spraying temperature is above 10°C, no wind or breeze, no dew on the plants, no rain within 24 h after spraying; pay attention to the wind direction and avoid drifting. When the temperature is high, use a low dose, otherwise use a high dose; when the temperature is suddenly cooled, use herbicides with caution. Before and after the application, the minimum temperature of the temperature is lower than 10°C, and the use of herbicides is prohibited.

When the soil quality of peanut field is sandy soil, sandy loam soil and soil organic matter content is low, the dosage should be reduced appropriately to avoid injury. The use of paraquat is prohibited on sandy soil. When drought occurs, it should be used to make fleas, and the amount of sensation should be low, and the amount of medicine used for bad sensation should be high. The land should be leveled. If the ground is uneven, when large rainfall or irrigation is encountered, the pesticides tend to collect with the water in low-lying areas, causing phytotoxicity;

Device selection

Select the usual sprayer without pesticide pollution in production, and the fan-shaped sprayer with constant pressure valve. Before spraying, check whether the screws of the switch, joint, nozzle, etc. of the medical device are tightly tightened, and whether there is leakage in the medicine barrel to avoid leakage of drug.

Scientific pesticide application

The distance between the nozzle and the target should not exceed 50cm. It is required that the spray be even, not leaky, and not heavy.

Security

Do not drink alcohol or smoke during the application. Use masks or overalls, or wear long-sleeved tops, trousers, and rain boots. Use soap after washing and wash your hands. Wash your face with clean water. To prevent sprayer residual herbicides from causing phytotoxicity to other crops.