Vegetables often have rotten roots during the nursery process, which seriously affects the normal growth of seedlings. Timely pesticide control is essential. Xiaobian takes everyone to understand how to avoid this phenomenon.
Symptoms usually show that the roots are rust-colored and rot. After the seedlings are unearthed, they grow slowly, do not produce new roots, and some even stop growing. The leaves are grayish green and gradually turn yellow, and the whole plant eventually withered and died. The control measures are as follows:
Note that after the cotyledons of the ventilated vegetable seedlings are unfolded, choose a clear and warm weather to uncover the cover and ventilate, and evenly apply a layer of fine dry soil to the seedbed. This can reduce the humidity of the bed soil and increase the temperature.
When controlling the amount of watering in nursery fields such as greenhouses or greenhouses, when the seedbed does not show obvious drought (that is, when the surface soil is held in groups), do not water the water. When there is obvious drought, the pesticide network reminds everyone to spray a new high-fat film. Moisturizing and anti-bacterial infection.
Adding organic manure such as decomposed chicken manure before applying organic fertilizer to improve seedling disease resistance and seedbed soil temperature, and reduce seedling incidence. Before seedling, mix the decomposed fine-quality high-quality hot farmyard manure and bed soil in the seedbed to the nursery soil. Do not apply nitrogen fertilizer as the base fertilizer in the seedbed. It should be noted that the organic fertilizer should be fully decomposed to avoid the loss of "burning seedlings" and nutrients.
Pesticide manufacturers recommend that everyone use roots + roots to protect the roots of the tree, thereby inducing virus agglomeration, for the general protection of tree guards, inhibiting root-borne virus-conducting infections and leaves and fruits, thereby maintaining the health of the plant transport system.
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