Recently, farmers in Feidong and Juchao districts and other places have called in to ask: Can greenhouse cucumbers be cured by ethephon? Ethephon can effectively promote the differentiation of female flowers in cucumber seedlings and increase the yield of cucumber. However, there are many farmers in the production practice can not accurately use the drug concentration, resulting in high concentrations, so that the growth of seedlings stagnant, flowers topping, the formation of a stiff seedlings, severe dry point of death at the point of growth. In this regard, the following remedial measures can be taken: Strengthening fertilizer and water management. After the occurrence of injury, according to the degree of injury, increase the availability of nitrogen fertilizer, while increasing the number of irrigation to ensure adequate water and fertilizer supply. Increase the temperature inside the shed. The suitable day temperature for normal cucumber seedlings is 25-28°C and 13-15°C at night. After the victimization, the greenhouse temperature should be increased to 30°C during the day to promote the growth of seedlings; the original low temperature can be maintained at night to ensure the continued differentiation of female flowers. Spraying gibberellin. Cucumbers are treated with ethephon at the four-leaf and one-heart period, and the concentration is greater than 200 mg/L, which means that phytotoxicity occurs. This can be sprayed with a gibberellin solution of 20-50 mg/L. To use it, dissolve it with alcohol or liquor and then prepare it according to the concentration, and spray it as soon as possible after the symptoms of drug injury appear. The second time after the next week, it usually returned to normal about 15 days.

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