It is well known that dried vegetables are also known as burnt edges and flaky skin. In recent years, the incidence of disease has been increasing year by year, which has caused a serious increase in production and a drop in the quality of food. There is no negligence on its prevention and cure.
Control essentials
1. Appropriate nitrogen application, application of boron and zinc fertilizers and phosphorus and potassium fertilizers. In the rosette period and the ball stage, the top dressings are jointly watered once. Apply 3 kg of nitrogen fertilizer (6.5 kg of urea) and 1-2 kg of boron and zinc fertilizer per acre, and spray 0.2% of potassium dihydrogen phosphate 1-2 times during the rosette and ball stage.
2, spray calcium manganese fertilizer and naphthalene acetic acid. Invent the dried heart, immediately watered and sprayed with 0.7% calcium chloride and 50 mg/kg naphthenate solution, or 1% superphosphate solution or 0.7% manganese sulfate solution, 50 liters of water per acre, 8 10%.
3. Guarantee the water supply during the rosette and ball stage. The lack of water in the soil can easily cause dry heartburn, and even in periods of drought and water shortage during the ball stage, it is necessary to water in real time. It is forbidden to pour industrial waste water.
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