The current high value of drought, high temperature and drought, coupled with the arrival of the flood season, there are many problems in the production of exposed vegetables, Baishui County Agricultural Technology Center vegetable station vegetable farmers recommended the following aspects of good production management.
1, strengthen field management
First, continuous drought should be watered in a timely manner to ensure that the field moisture content is between 60-70%. After the rainstorm, it is timely drained and the soil moisture content is controlled below 80%. Otherwise, it will affect the normal respiratory and nutrient absorption of roots, resulting in physiological leaf rolling; In addition, the humidity in the field is too large and it is easy to induce diseases. The second is a reasonable fertilization, after the harvest of the first row of panicles, after the rain in acres of potassium dihydrogen phosphate or potassium sulfate 10-15 kilograms, or watering after fertilization to ensure normal expansion of fruit coloring. The third is the timely pruning, usually after the harvest of the first panicle, promptly knocked down the old leaves, diseased leaves, keep the plant transparent, conducive to plant growth. The diseased leaves and diseased fruits in the field are destroyed at any time and brought out of the field.
2, do a good job of pest control
At present, we have entered the flood season, and high-temperature drought is conducive to the occurrence of viral diseases. The high-humidity environment after heavy rains is conducive to the occurrence of tomato late blight. At the same time, nocturnal insect pests harm fruits, and high temperature and strong light cause some fruit burns. In addition, improper application of pesticides leads to drug production. harm. It is recommended that vegetable farmers should grasp the principle of "prevention first, comprehensive prevention and control" in the prevention and control of diseases and pests, strengthen fertilizer and water and field management, use drugs rationally, and timely prevent and cure. The pesticide application should be conducted before 10am and after 4pm.
Pharmaceutics selection: Bacterial disease can choose Anke. Manganese zinc, Proplooxypropyl ammonium propionate, a cream of copper, anti-virus maggots, etc.; virus disease can prevent pests and diseases, use imidacloprid + morpholinium hydrochloride spraying, can also use the virus A, disease and disease, potassium permanganate and other diseases; pest control should choose high efficiency and low toxicity and low residual pesticides, preferred pyrethroids and diflubenzuron pesticides. Disease prevention and control, once every 7-10 days, continuous 2-3 times, you can control the disease.
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