Control techniques of tomato bacterial wilt

Hello, Mr. Wan.

What medicine is the most effective treatment for bacterial wilt of small tomato?

Name: Ma Ronghai unit: farmer contact number: 13471638971

A: comrade Ma Ronghai:

Hello, the control techniques of tomato bacterial wilt are as follows:

1. Rotation: tomato rotates with Gramineae, Cruciferae, Liliaceae and melons for more than 2 to 3 years, preferably with rice and other crops. Cannot be planted in the same field as eggplant, chili, potatoes, peanuts and legumes.

2. Apply quicklime and adjust PH value: 150 Mu of quicklime is used to spread 200 kg of quicklime per mu to make the soil acidic and worsen the living environment of bacteria.

3. Strengthen field management: popularize high border planting, open three ditches well, make room ditch, middle ditch and perimeter ditch connected, convenient drainage and irrigation, apply more rotten organic fertilizer, achieve the combination of nitrogen, phosphorus and potassium, and improve the disease resistance of plants.

4. Chemical control

(1) eliminate underground pests and nematodes: in the land where underground pests are rampant and tomato root-knot nematodes are serious, underground pests and nematodes should be eliminated, the damage of pests and nematodes to roots should be reduced, and bacterial infection should be avoided. 3% phoxim granules 2 kg per mu can be applied to the soil. Or drench with avermectin solution after transplanting.

(2) Lime nitrogen soil disinfection method: lime chemical name calcium cyanide, trade name Shengtai soil purifier, Longbao, common name black fertilizer. Lime nitrogen is a soil fungicide for both medicine and fertilizer, and lime nitrogen itself is alkaline, which can adjust the soil PH value, and it is applied to the soil to produce cyanamide and dicyandiamide. At the same time, lime nitrogen is a slow-release nitrogen fertilizer, which contains about 20% nitrogen and 42-50% calcium. After being applied to the soil, due to the increase of calcium element, the soil aggregate structure is improved. The application of lime nitrogen to soil can effectively kill fungal diseases, bacterial diseases, root-knot nematode disease and other soil pests, and alleviate soil hardening and acidification, the effect is very significant. Application method: during the period from July to August, under the condition of high temperature, after the rice harvest, the field was ploughed and the soil was broken and ditched, and about 130 jin of lime nitrogen per mu was applied into the ditch with about 130 jin of lime nitrogen and organic fertilizer needed by the recommended crops. then the soil on both sides of the ditch was backfilled and ridged, then covered with plastic film and sealed with plastic film, and finally irrigated to moist the soil. After 15-20 days, the film was removed and dried for 5-7 days. The recommended crops can be planted directly without the need for other fertilizers.

(3) Chemical root irrigation: method 1: Qingku Kuiyangling 2 package, Dixong 5 packet, agricultural streptomycin 30 packet, carbendazim 2 package, salt 6 packet mixed with water 1000 to 1200 kg per mu, once every 7 to 10 days, continuous irrigation 2-3 times, the effect is better. Method 2: 77% can kill 101 micro-powder 600-fold solution, or antibacterial agent "401" 500-fold solution irrigation, or 1-purl-1-200-fold Boerduo solution irrigation. Or irrigate the root with 72% agricultural streptomycin 40 pack 2500 times solution and copper oxychloride 800 times. Or irrigate the roots with 2000 times of the solution of special effect sterilization king, 400 times of dioxone and 600 times of Qingkusan.

The above is for reference only.

[expert] [Wan Mingchang]