Cucumber spraying ethephon can increase production in summer and autumn
Cucumber is a male-female cross-pollination crop, and sooner or later, the presence of male and female flowers, has a significant impact on the yield and economic benefits of cucumber. The growth and development stage of cucumber in summer and autumn is in hot and hot season, with long sunshine and late formation of female flowers. The application of ethephon in the cucumber seedling stage can promote the development of female organs, and the female stem of the primary stem of the original male flower can form female flowers and reduce the position of the female flower, thereby multiplying the cucumber and not only increasing the yield but also precociously. The specific method is as follows: Spraying time: When the cucumber grows 1-2 true leaves, the buds of the leaves of the 2-11th section are successively differentiated, but the gender has not yet been decided, and the ethephon spray effect is best during this period. At the time of four true leaf stages, the sex of the flower buds has already formed and the use of ethephon is useless. The suitable period of spraying ethephon for cucumbers in summer and autumn is 2-3 true leaves. Spraying times are usually 1-3 times, spraying once every 7-10 days. Spraying concentration: The suitable concentration of 0.01%-0.02% dilution of elder with cucumber is controlled according to the number of treatments. Generally, when spraying twice, it is preferable to use 0.02% dilution, and when spraying three times, it is better to use 0.01% dilution. Spraying method: After 4 o'clock in dark days, the prepared liquid was evenly sprayed on the leaves and growing points of the whole plant to make the mist fine. Pay attention to leave a certain number of plants without treatment, so that the male flowers produced on them provide pollen for the female flowers in the field. When cucumbers are treated with ethephon, female flowers increase and internodes shorten. Within the 20-knots of the plant, female flowers are grown on almost every node. However, if the young cucumbers are to be sat and normally developed, management must be strengthened to ensure sufficient supply of fertilizer and water. A push to the end. In the late growth period, 0.3% potassium dihydrogen phosphate and 3000-4000 times of 802 mixed solution are sprayed 3-5 times to ensure vigorous growth of vegetative growth and reproductive growth and prevent premature aging.