How to prevent drug damage to flowers

Drug damage can be divided into acute drug injury and chronic drug injury.

Symptoms:

Acute drug damage: it occurs quickly and the symptoms are obvious. It is generally characterized by the appearance of hemp spots or wilt on the leaves, spots, deformities or sterility of the fruit, scorched petals, falling flowers and buds, slow growth of the plant, and even death of the whole plant.

Chronic drug damage: the symptoms are not obvious and it is not easy to judge in a short time. The general performance is slow photosynthesis, dysplasia, delayed flowering, small and few flowers, lighter flowers and fruits, which is very similar to the symptoms of lack of nutrition.

Prevention: strictly control the concentration and dose of pesticides, if it is found that the use of standard doses and concentrations of pesticides can not achieve the desired results, the varieties of pesticides should be replaced. Do not mix pesticides at will to avoid drug damage.

First aid: if you use the wrong medicine, you should immediately spray a large amount of water to wash the plant. If the wrong soil treatment agent is used, it can be rescued by alternating irrigation and drainage, and quick-acting fertilizer can be applied after washing to promote the vitality of the affected plant. If the medication is wrong and found in a timely manner, the opposite sex neutralization can be carried out after washing under the guidance of scientific and technological personnel who understand pharmacology.

For example, after the use of dimethoate emulsion, alkaline pesticides such as stone sulfur mixture and methomyl can be used to neutralize, or 200 times borax solution can be sprayed 1-2 times. After the broad-leaved flower plants mistakenly use dimethyltetrachloride herbicide, the leaves become white. 50% of the sodium humate granules can be dissolved with a little water, and then the water is drenched into a 500-fold liquid, plant by plant, and the leaves can restore their function after 3-5 days. If spraying copper sulfate causes drug damage, it can be detoxified by spraying lime water with a concentration of 1% Mel 5%.