How to deal with greenhouse vegetable roots?

Roots of greenhouse vegetable seedlings is a physiological disease, mostly caused by improper management. At the time of initial infection, rust appeared in the roots. In severe cases, the roots were rotted, and no new roots were found. The seedlings turned yellow and wilted, and all of them died later.

1. Maintain the proper temperature. Bed soil preparation should be reasonable. After sowing, it should ensure sufficient soil temperature. In case of rainy days and insufficient light, warming and heat preservation measures should be taken. Early spring nursery seedlings (rooms) in the best use of electric hotbed for nursery to facilitate insulation.

2. Reduce humidity in time. When raising seedlings in shelters such as greenhouses or greenhouses, generally the seedbeds are not significantly watered when the seedbeds are in contact with each other, and watering or watering should be avoided as much as possible. The amount of watering during obvious droughts should not be excessive. Seedlings do Ning Gan not wet, if the seedbed is too dry, it can cover moist fine soil, this will not only alleviate the seedlings' need for water, but also reduce the air humidity in the seedbed, the bed humidity is too high, can cover hay ash, It is also possible to conduct proper ventilation and dehumidification at high noon temperatures.

3. Pay attention to increase lighting. Before growing seedlings, choose a place with adequate light to build seedbeds. This is conducive to the seedlings robust growth and development, enhance their resistance to disease, reduce the emergence or spread of roots in vegetable seedlings.

4. Apply farmhouse fertilizer. In order to raise vegetable seedlings, we must increase farmyard manure, especially hot manure, to cultivate fertility, cultivate strong seedlings, improve the disease resistance of vegetable seedlings, increase ground temperature, and reduce disease occurrence. The specific approach is: before vegetable seedlings, Combine the fully cooked hot farmyard mash with the bed soil. However, it must use decomposed hot farmyard fertilizers, otherwise it will cause burning roots.

5. Timely ventilation. After the cotyledon is unfolded, choose clear and warm weather to uncover the ventilation of the cover, and evenly spread a layer of fine dry soil to the seedbed, then cover the cover tightly. This will not only reduce the humidity of the bed soil, but also have a certain warming effect.

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