In the process of onion planting, the main diseases are downy mildew, purple spot disease, atrophic disease and soft rot. The main pests are root mites, leaf miners and onion horses. In the various stages of onion growth and development, it is possible to infect pests and diseases. In order to ensure the output of onions, farmers need to do a good job in the prevention and control of pests at various stages.

1 seedling preparation

1.1 Concerns: prevention and treatment of rickets

1.2 treatment plan

1.2.1 Seedbed treatment: level the seedbed and pour the bottom water. With 47% Jia Rui Nong + 44% Fei Ge 700 times liquid, seedbed topsoil spray.

1.2.2 Seed treatment: Baolu 10 ml + Ruisheng 10 g + Bi-protection 1 g + water 30 ml, mix 3 kg with seeds while spraying, sowing.

1.2.3 Sowing: Mix the fried small seeds with the onion seeds and evenly sow them. About 100 grams of seeds are sprinkled 14-16 square meters.

2 after emergence

2.1 Concerns: prevention and control of root rot, cultivation of strong seedlings

2.2 treatment plan

2.2.1 Vertical needle period: Ami wonderful collection of 1500 times + additional rice / tetramycin 500 times + Bi protection 7500 times spray.

2.2.2 After the two leaves: Tour Bao Kang 600 times liquid + Ai Wofu 750 times liquid leaf spray. The interval is about 10 days, counted twice.

2.2.3 After the three-leaf period: good application of 2 liters + Bao Road / bright shield 100 ml + Bi protection 10 grams ∕ 500 square meters, rushing.

3 three days before transplanting

3.1 Concerns: increase the survival rate of transplanting, shorten the slow seedling period, and promote rooting

3.2 treatment plan

Baolu / Liang Shield 1500 times liquid + Bi protection 5000 times liquid + Akte 5000 times liquid leaching seed bed. Or spray directly onto the roots after the seedlings. When there is a hummer, use Ai Shishi 1500 times liquid leaf spray.

4 land preparation

4.1 Concerns: prevention and control of underground pests and weeds

4.2 treatment plan

4.2.1 Leveling the land: Applying the base fertilizer.

4.2.2 Roots and leaf miners: It is a common pest of onions. It occurs in the early stage, but it has a better effect on the soil. 4 kg of Yingzhuang granules are used before the film.

5 slow seedling period

5.1 Concerns: Promote rooting, strong seedlings, and improve resistance

5.2 treatment plan

Use Baokang 500 times liquid + Bi-protection 7500 times liquid + Ai Wofu 750 times liquid leaf spray.

6 growing season

6.1 Concerns: Prevention of root rot, prevention and control of root rot

6.2 treatment plan

After slow seedling: add rice / tetramycin 500 times liquid + Ami wonderful collection 1500 times liquid + Garonong 600 times liquid foliar spray; root rot early stage: acre with bright shield 100 ml + add rice / Tetramycin 300g + Bi-protection 10-20g + good application of 2 liters. Depending on the situation, the second spray will add 600 times of Baokang.

7 initial expansion

7.1 Focus: Prevention of root rot and thrips

7.2 treatment plan

Ai Lu Shi 1500 times liquid + Mei Rui 2000 times liquid + add rice / tetramycin 500 times liquid + Bi protection 7500 times liquid + An Rongle 5000 times liquid leaf spray.

Mu with phosphorus, potassium, 1 kg + rushing fertilization

8 expansion period

8.1 Focus: Prevention of root rot, soft rot

8.2 treatment plan

Garrinone 500 times solution + avermectin 1500 times solution + An Rongle 5000 times solution. When purple spots occur: Add enemy force off / love seedling 3000 times liquid.

Late 9

9.1 Focus: Control downy mildew, soft rot, maintain leaf function, improve disease resistance

9.2 treatment plan

Garrinone 500 times solution + avermectin 1500 times solution + An Rongle 5000 times solution. When purple spots occur: Add enemy force off / love seedling 3000 times liquid.

10 countdown

10.1 Concerns: prevention and control of soft rot, sour skin disease, etc.

10.2 Treatment plan

Garrinone 500 times liquid + love seedlings / enemy force off 3000 times liquid + phosphorus dipotassium 500 times liquid foliar spray.

Only by doing a good job in the prevention and control of pests and diseases at various stages of onion can we ensure high yields and increase income, and promote farmers' planting benefits.

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