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Choose herbicides carefully. At present, there are many types of herbicides, and the herbicides suitable for the road should be selected according to the types of crops in the greenhouse, the time of application, and the objects to be controlled.
Strict control of the dosage used. The herbicidal effect of the herbicide is closely related to the temperature, the temperature is high, the herbicide has a strong activity, and it is easy to cause phytotoxicity. The temperature in the greenhouse is obviously higher than the temperature in the natural state, and sometimes the temperature inside the membrane will be very high. If the dosage is applied according to the dosage in the natural state, it is easy to cause phytotoxicity. Therefore, the application amount of the herbicide in the greenhouse should be appropriately reduced compared with the amount of the natural state in the same period.
Strictly control the concentration used. In the past, when farmers applied herbicides, there was a habit of using less water and too much concentration. It was difficult to spray the agent evenly, which often caused excessive application of the drug to the place where the drug was sprayed, and phytotoxicity occurred; No herbicidal effect. Therefore, when using herbicides in greenhouses, it should be diluted in strict accordance with the requirements to prevent excessive concentration.
Correctly master the application method. When using herbicides, attention should be paid to uniform spraying. Repeated application is strictly prohibited. For overly arid plots, water consumption should be increased. It is best to sprinkle some water before application to increase soil water content, which is beneficial to herbicide efficacy. Play.
Remediate phy If the herbicide is improperly used in the greenhouse, the membrane should be promptly ventilated, the temperature should be lowered, the microclimate in the greenhouse should be changed, and the fertilizer and spraying plant growth regulator should be applied to promote the growth of the crop.
Author: Wusong farmers Daily
Because the temperature and humidity conditions in the plastic greenhouse are quite different from the external environment, such as the pesticide application method under the normal state, it is easy to cause phytotoxicity. In order to reduce the occurrence of phytotoxicity, the following points should be noted when applying herbicides in greenhouses:
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