Pre-seeded seed treatment
In addition to selection of resistant varieties, the seeds should be soaked with fresh water for 3 to 4 hours before germination, and soaked in 10% trisodium phosphate solution for 20 to 30 minutes. Remove and rinse with clean water before germination.
Strengthen management
Cultivate disease-free strong seedlings, implement single-plant single soil nutritious soil nursery, and planting plants with pods. Increase the use of fully cooked organic fertilizer to promote early-onset and enhance plant resistance to disease. At the same time, we must do a good job in the management of greenhouse temperature. In the nursery period and the early stage of planting, due to the high temperature and strong sunlight at this time, it is necessary to cover the shade net or shade it with weeds to avoid direct sunlight. Ventilate around the greenhouse, especially when the temperature is high at noon, to open the ventilation, adjust the temperature inside the shed. At the time of colonization, the diseased plants were found to be removed promptly.
Chemical control
Timely prevention and control of aphids, cut off the source of poison. When locusts are found in the field, they are immediately controlled, with 10% large heroes, 10% alfalfa net powder, 10-15 grams of powder, 30 to 40 kg of water, even spray control, if the weather is dry, the amount of large When it comes to continuous spraying and prevention. In the early stage of disease, spray 1.5% of plant disease and Lingshui agent 100 ml per mu or 20% of virus A wettable powder 70-100 g per mu, spray once every 5-7 days, 2 or 3 times in succession, can receive Better results. If the onset is severe, the leaves shrink, and the internode shortens, 1 mg/kg cytokinin may be added to the above-mentioned medicament, and 50 g mu may be used to promote cell division and accelerate the harm.
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