When the temperature in the greenhouse is low, it will lead to gray mold, plague, and root diseases in vegetables. Therefore, how to use chemical agents to control these diseases before planting crops, how to minimize the occurrence of diseases. ? The China Pesticide Network Xiaobian proposes two methods for everyone to easily prevent diseases.
(1) We can use the sclerotium net and carry out the smoked spray together for the disease. It has the functions of direct sterilization and infiltration treatment, and it also has the characteristics of long-term prevention and control. The sclerotia net can effectively prevent and cure ascomycetes and bacteria, and it is easy to produce eggplant and zucchini. For diseases such as gray mold and sclerotinia disease, we can choose to use the sclerotia net for prevention and control, and spray about 200-300 times of sclerotium disease to the soil before turning to the ground, as for gray mold. It becomes better to turn into a sclerotium on the soil surface and then turn it over. Before the eggplant is planted, when the greenhouse is closed and the temperature is raised, we can also use the sclerotia to smoke the greenhouse according to the dosage of about 300 grams per mu and add isoprocarb and other insecticides . As well as the disease, it is necessary to ventilate Dapeng about 3 to 5 days before the eggplant is planted, so that the harmful gases can be discharged outside the greenhouse.
(B) However, the choice to use the enemy Kesong to the soil-borne diseases. There are more than 50 types of diseases that can cause serious diseases in greenhouse vegetables. In these diseases, very few diseases such as cucumber downy mildew are diseases that are introduced from outside the greenhouse according to airflow and farming activities in vegetable farmers. In addition, most of the bacterial, fungal diseases and certain viral diseases, their pathogens are all wintering in the soil. The first source of infection for these diseases is usually transmitted from the soil in the greenhouse. Therefore, it is extremely important to carry out soil treatment for the prevention and treatment of diseases. It has a special system of internal absorption and osmotic functions and a soil treatment agent. It can prevent the pathogens such as oomycetes and rot, and has very good effects. It has a good effect on controlling diseases of roots and plague. Encourage vegetable farmers to use the amount of about 10 kg to 14 kg per acre to use in soil to prevent soil-borne diseases.
Therefore, vegetable farmers should promptly carry out pesticide control, thereby reducing the chance of disease occurrence and increasing the yield of vegetables.
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