Key points for the application time and dosage of vegetable greenhouse smoked agent
The application of fuming agents in vegetable greenhouses can effectively prevent indoor vegetables, melons, fruits and pests, and is a good way to produce pollution-free green food, which is popular among farmers. The fumigant is prepared by a special process such as a pesticide, a heating agent, a combustion-supporting agent, a dispersing agent, etc., and has the advantages of simple operation, remarkable effect, low cost, low residual amount, broad spectrum, and the like, but The actual operation also needs to pay attention to the application time, dosage, etc. The specific small series will be explained in detail below. First, the application time The time for applying the fumigant in the vegetable greenhouse is selected according to the characteristics of the vegetable production in the greenhouse. Generally, the selection is made after the sunset in the evening, so that the medicament is smoked at night, which is more conducive to the sinking of the mist of the smoke agent and the control effect. More ideal. Second, the way of casting 1. First select a few places to smoke, then place the smoke agent evenly on the ground and ignite with incense or cigarette butts. 2. Most of the smokers sold on the general market are 100g small bags. Large vegetable sheds can be used in whole bags. If it is a small vegetable shed, you can put the smoke powder in a small paper tube rolled up by old newspapers. Inside, insert the ignition ignited. At the same time, 100 grams of smoke powder can be used to fill the column, and each piece is cut into two sections. 3. The ignition sequence is sequentially ignited from the shed to the shed. Third, the amount of application 1. When using a fumigant, it is necessary to select the applicable medicine and appropriate dosage according to the control object in accordance with the principle of cost-effectiveness. 2, prevention and treatment of cucumber downy mildew, blight, tomato early blight, late blight, gray mold, sclerotium disease, etc., you can use 10% procymidone smoke agent, 250-300 grams per acre. For severe cases, it can be appropriately increased to 400-500 grams. 3, the prevention and control of powdery mildew can choose 15% clefin smoke agent, 250-300 grams per acre. Of course, it is also possible to use a sulphur powder of 250 grams per acre and 500 grams of sawdust for fumigation. Fourth, matters needing attention 1. The smoke in the greenhouse should be sealed for at least 4 hours, preferably before and after sunset. The next day, the vent should be fully opened and ventilated. 2, the use of chlorothalonil aerosol can only be carried out in greenhouses or greenhouses, and must be closed tightly. For the wonderful pictures and popular comments on the spraying of vegetable greenhouse smokers, you may be interested in the following recommended contents. Welcome to read. Office Safe Box,Commercial Safe Box,Heavy Biometric Office Safe Box,Large Office Safe Box Hebei Yingbo Safe Boxes Co.,Ltd , https://www.yingbosafebox.com
