Greenhouse tomatoes beware of three "hyperthermia"
The best way to control bacterial wilt is to use medicine to irrigate roots, such as applying DT plus neophyticin or agricultural streptomycin plus rooting agent. When irrigating roots with medicines, the above-mentioned medicines can be used as a protective spray for the tomatoes that have not developed disease. Tomato plants that have already died of disease should be taken outside the shed for deep burial and the soil should be disinfected. Moreover, proper spraying of some plant growth conditioners or foliar fertilizers can effectively promote the growth of tomato plants.
Fusarium wilt and spicy vegetables are rotated for 3 to 4 years, such as green onions and garlic. Choose disease-free seeds or soak them in 52 ° C warm water for 30 minutes before sowing, or use 0.4% 50% carbendazim to mix seeds. At the same time, strengthen shed management, as a result, increase the amount of ventilation and reduce the temperature. At the initial stage of the disease, the roots were irrigated with 50% carbendazim 1000 times, 200 ml per plant, once every 7 to 10 days, and 2 to 3 consecutive times.
Root-knot nematode disease strengthens field management. During tomato growth, reasonable fertilizer and water measures can enhance disease resistance. When the root-knot nematode occurs, the diseased body should be thoroughly treated, burned or buried deeply. Vegetables in the middle stage of growth can be controlled by abamectin plus chemical fertilizer or organic fertilizer. Chemical control, when sowing or colonizing, applying symptomatic fertilizers, organic fertilizers, etc. to control the root-knot nematode damage. In addition, in the leisure season of the greenhouse, it can be strictly disinfected by using lime nitrogen high-temperature stuffy shed or using methyl bromide.
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