In recent years, with the development of agriculture , the industry of pesticides has also been continuously developed, and the types of pesticides are also increasing. It is also very important to increase the awareness of farmers using pesticides today. How to use green and green herbicides faster and better can be beneficial to the development of crops.
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Because the temperature and humidity conditions in the plastic greenhouse are quite different from the external environment, it is not possible to use the pesticides under normal conditions, otherwise it may cause phytotoxicity. Therefore, be cautious when using herbicides in greenhouses. Pay attention to the following points:
First, scientific and rational selection of herbicides. 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.
Second, strict control of herbicide concentration. In the past, when farmers used herbicides, there was a habit of using less water and too much concentration. It was difficult to spray the chemicals 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.
Third, strict control of the use of herbicides. The herbicidal effect of herbicides is closely related to temperature. The temperature is high, the herbicide has strong activity, and it is easy to cause phytotoxicity. The temperature in the greenhouse is obviously higher than the temperature in the natural state, especially in spring and autumn, and sometimes the temperature inside the membrane will reach a high level. If the dosage is applied according to 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.
Fourth, master the correct use of herbicides. 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.
Fifth, remedy phytotoxicity. 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, the fertilizer should be applied, and plant growth regulators such as 920 can be sprayed to promote the growth of the crop.
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