Tomato seedling disease prevention technology in the basin

The fruit inducer is applied before or at the onset of watering. The spray can be used 50% fast-king WP 2000 times; 50% acetaminophen wettable powder 1500 times; 60% anti-mildew ultrafine powder 600 times; 45% thiabendazole suspension 4000 times; 2% Wuyimycin aqueous solution 150 times; 50% Nongliling WP 500 times.

Smoke application in the protected area can be selected from 10% fast-kerosenic smoke or 45% chlorothalonil smoke agent, 250 grams per acre; 3% thiabendazole smoke agent, 250 grams per acre.

Blight:

First, seedlings treatment can refer to damping-off.

2. Seed treatment: Use 0.3% of the seed weight for 40% of the seed dressing, or use 50% of thiram for seed dressing.

Third, to strengthen the seedbed management: pay attention to increase the temperature, scientific ventilation, to prevent the emergence of high temperature and humidity seedbed.

Fourth, the chemical control: the initial incidence of spraying 50% Li Bingjing WP 800 times, 36% Thiophanate Suspension 500 times, or 70% Mancozeb WP 600 times or 5% Jinggangmycin agent 1500 times liquid. When damping-off and blight are mixed, it can be sprayed with 50% DM WP 800 times, 2-3 liters per square meter, and once in 7-10 days for 2-3 consecutive times.

Late blight:

First, agricultural control: selection of disease-resistant varieties, this one can refer to the instructions on the seed packaging; with non-solanum crops for more than three years of rotation; strengthen fertilizer management, sunny watering and prevent flooding irrigation, timely ventilation after protection Fertilize the base fertilizer and use formula fertilization; reasonably close planting, timely pruning, improve the ventilation and light transmission conditions; timely remove the central diseased plant.

Second, the chemical control: After the discovery of central disease strains, the effect of timely application of pesticides is good.

Spray application can use 40% Phytoncide WP 250 times, 58% metalaxyl MnZn WP 500 times, 64% WP WP 500%, 72% urea MnZn (DuPont) Kelu) WP 800 times, 69% AZM wettable powder 1000 times.

The dust can be applied within the landfill: 5% cream urea manganese zinc dust can be used for every 1 kg of urea, 5% chlorothalonil dust, and 1 kg for each mu. The pesticide is applied before the shed is sealed in the evening room. can. 7-8 days once, 3-4 times in a row.

Smoke application can use 45% chlorothalonil smoke agent 250g/mu times, apply in the evening and close the shed.

Irrigation can be applied with 50% methicone wettable powder 600 times, 60% saponin phosphorus aluminum wettable powder 400 times, 300 grams per strain can be about irrigated.

Physiological diseases

First, the surface should be flat, no flood irrigation. In a rainy season, it should be timely and airy.

Second, the use of solar energy greenhouse or electric hotline nursery: to strengthen the management of bed temperature, seedbed temperature control above 15 °C. After the occurrence of a slight rooting, the soil must be loosened and the ground temperature raised. After the new root grows, it will be transferred to normal management.

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