Prevention and Rescue of Drug damage to Flowers and plants

I. symptoms of drug damage to flowers and plants

1. Acute drug damage. The drug damage occurs quickly and the symptoms are obvious, such as spot, focus or withering on the leaves, spots, deformities, smaller fruit, falling fruit, scorched petals, falling buds, slow growth of the plant, or even death of the whole plant.

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

II. Prevention of drug damage to flowers and plants

1. Use the medicine according to the instructions. Operate in strict accordance with the requirements of the drug instructions, do not use pesticides that do not know their usage due to the loss of labels. Do not arbitrarily increase the drug concentration and dose. If the use of standard dose and concentration can not achieve the desired control effect, the variety of pesticides should be changed.

2. Do not mix pesticides at will to avoid drug damage.

III. First aid measures for drug damage to flowers and plants

1. Spray washing method. If you spray the wrong medicine, you should immediately spray a large amount of water to wash the plant; if you use the wrong soil treatment agent, you can use the alternate method of irrigation and drainage to rescue the plant, and apply quick-acting fertilizer after washing to promote the recovery of the damaged plant.

2. Neutralization and mitigation method. If there is a mistake in the use of medicine and it is found in a timely manner, under the guidance of scientific and technological personnel, we can first wash it with water and then neutralize it with heterosexual pesticides, that is, the harm of acidic pesticides can be neutralized by alkaline pesticides. For example, after the use of dimethoate emulsion, alkaline pesticides such as stone sulfur mixture and methomyl can be used to neutralize dimethoate, or 200 times borax solution can be sprayed twice to make the plant return to normal.

3. Spray salvage. After the broad-leaved flower plants mistakenly use dimethyltetrachloride herbicide, the leaves become white. 50% sodium humate granules can be used to dissolve the water first with a small amount of water, and then turn the water into a 500-fold liquid. After 5 days, the leaves can gradually restore their function.

4. Fusion and detoxification. If spraying copper sulfate causes drug damage, it can be detoxified by spraying lime water with a concentration of 5% Murray 1%. The damaged seedlings can be replanted and the management should be strengthened.