With the gradual increase of summer temperatures, vegetable pests are also more serious, which creates conditions for the transmission of poisonous pests and viral diseases. At the same time, with the arrival of the hot and rainy season, the rainfall will increase, which is the season in which the open vegetables grow faster, and it is also the season when the autumn vegetable seedlings are about to begin. Therefore, timely pesticide control means a bumper harvest of vegetables.
Viral diseases can occur in a variety of vegetables, especially in open field vegetables, and the degree is also heavy. There are many manifestations on the symptoms. Common symptoms include leaf mosaic, streaking, shrinkage, fruit malformation, dwarfing of plants, clumping, etc., which are generally easier to identify in the field. However, if the symptoms of the symptoms are manifested, the prevention and treatment is generally poor. To this end, we must do a comprehensive prevention and control of vegetable virus diseases.
First, the seed treatment of seed bacteria is an important source of crop virus disease, such as seed-borne bacteria, crops will be affected by the disease, which has a great impact on the yield. Therefore, pay attention to seed treatment before planting. Soaking seeds with 10% trisodium phosphate solution or 1% potassium permanganate solution for 15-20 minutes before sowing to passivate the pathogen activity on the seeds.
Second, seedling management Strengthening the management of vegetable seedlings is the key to preventing viral diseases. 1 It is necessary to take measures to prevent insects, such as regular use of insecticides and silver ash film to avoid cockroaches, etc., to reduce the chance of pest transmission. 2 is appropriate to take shading measures, such as the use of shade nets for shading to avoid high temperature in the seedbed.
Third, chemical prevention According to the Chinese pesticide network , in the beginning of the vegetable virus disease, spraying drugs to prevent and cure viruses, you can choose 83 anti-agents, virus A, virus Baker and other water spray control. In the adult stage, vegetables should be strengthened to manage fertilizer and water, and cultivate strong plants to improve the resistance of plants to disease resistance and disease resistance.
Xi'an Jmlai Bio-Tech Co., Ltd. , https://www.jmlaisarms.com