Spring tomato breeding problems and countermeasures

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Tomatoes are more cold-tolerant, and they usually sprout after soaking. But sometimes the temperature after sowing is low, and the seedlings inside are colder. The seeds may not bud for a while, and they can germinate after the weather improves. The phenomenon of non-germination is mainly long-term low temperature, or when the seedlings are sown, they are too dry, and they are not irrigated. The water spray is insufficient, and the water is sucked off by the lower dry soil to form a phenomenon of “drying”. No germination should be found after 7 to 8 days after sowing.

Freeze damage is mainly caused by low temperature below 0°C in tomato seedlings, causing partial dryness or death. Preventive measures: 1. Pay attention to the weather forecast. When the cold air comes, cover the straw cold insulation at the small arch shed in the evening, and uncover the rice straw in the daytime to facilitate light warming. 2. Cultivate strong seedlings and hardening seedlings.

Flash seedlings "flash seedlings" are leaf blight and dryness caused by sudden changes in environmental conditions. This phenomenon can occur throughout the seedling period. To avoid “flash seedlings”, we must first cultivate strong seedlings. The seedlings are often ventilated, and the leaves are thick and dark green. Generally, “flash seedlings” do not appear. If the seedlings are withered, cover them immediately and wither the leaves for a short time, so that the seedlings are repeatedly exposed several times to adapt the exposed climate and the cover is removed.

The tripling or death of the seedlings The tomato often suffers from tripping or death during the breeding process. The incidence is mostly when the young seedlings have 2 to 3 true leaves. The early plague, gray mold, and sclerotia caused by rot and death of seedlings are the hazards of the ground tiger. Preventive measures: 1. Before sowing, apply an appropriate amount of fungicide such as chlorothalonil or treprodil and Miller or Lethbenzide to seedlings or nutritious soil; 2. Maintain moderate dryness within the borer. The semi-dry, semi-dry surface, low air humidity, seedlings are not long and the roots are well developed. Generally, they will not die or fall.

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