How long did 920 soak in alcohol?

Powder "920" should be dissolved in alcohol, and it must be soaked in alcohol for 24 hours before spraying. If it is water agent "920", it does not need to be dissolved with alcohol, and it can be sprayed directly after adding water.

To master the reasonable dosage, the dosage of "920" should be strictly controlled, and the dosage per mu of paddy field should be controlled between 1 g ~ 2 g, which should not exceed. Only use 1 time in late rice, and generally do not reuse.

Pay attention to the following points when using.

1. The best time to apply "920" in late rice during the use period is the early stage of ear breaking, and generally the effect is better when the heading rate of late rice reaches about 20%, which can safely heading, flowering and filling in a short time.

2. When the weather changes, paint "920", so you don't need to think too much about the weather, just paint it at the beginning of the course. The application time of "920" must depend on the weather change. For double-cropping late rice at the early heading stage, potassium dihydrogen phosphate and an appropriate amount of "920" should be sprayed on the leaves 3 ~ 5 days before the cold dew wind comes to promote early heading, early flowering and early filling, so as to avoid the harm of cold dew wind.

If it is not sprayed when the cold dew wind comes, it is sprayed before the cold dew wind comes or during the cold dew wind, the rice ears will not bloom and pollinate because of the influence of the cold dew wind, and the purpose of increasing production will not be achieved. When the cold dew wind expires, use it immediately to ensure that it can catch good weather and bloom safely.

3. When spraying "920", you should leave a shallow layer in the field to give full play to the role of "920". Spraying "920" is generally effective before 10: 00 am.

4. "920" liquid medicine can not be mixed with acid-base pesticides and fertilizers, but can be mixed with fertilizers and pesticides such as urea, potassium dihydrogen phosphate, spraying treasure and pymetrozine.

5. The preparation of "920" medicine should be sprayed with it and should not be stored for a long time. The prepared drugs should be kept in the cool place in the wild, not exposed to strong light and high temperature. If it rains heavily the day after spraying, it should be sprayed again.