When cucumber grows to 14 ~ 15 leaves, spraying 50 ~ 100 mg/L chlormequat chloride solution once can promote cucumber fruit setting and increase yield.
Spraying the stigma of female flower ovary with 50 ~ 100 mg/L 6-BA before and after the flowering of cucumber can prevent cucumber from turning into melon and improve the fruit setting rate.
Spraying 50 ~ 100 mg/L petroleum growth promoter solution on cucumber leaves at flowering stage or spraying 0.0 1 ~ 0. 1 mg/L brassinolide solution at early flowering stage 1 ~ 2 times can prevent melon from melting and improve fruit setting rate.
Spraying 2 mg/L thiazolinone solution on female receptacle of cucumber can promote fruit setting and increase the weight of single fruit.
When cucumber grows to 14 ~ 15 leaves, spraying 50 ~ 100 mg/L chlormequat chloride solution can shorten internodes and promote its later fruit setting. Spraying 100 ~ 150 mg/L growth-promoting hormone solution on cucumber in greenhouse for 2 times during the 7 ~ 8 leaf stage can dwarf the plants, promote fruit setting and improve the photosynthetic capacity of leaves.
Spraying 50 ~ 100 mg/L triiodobenzoic acid or 50 ~ 150 mg/L plastic solution at cucumber flowering stage can promote cucumber fruit setting.
On the day of watermelon flowering, applying 1%6-BA solution on the fruit stalk can promote watermelon fruit setting. The effect of applying 1%6-BA solution to the fruit stalks of Hami melon, netted melon, pumpkin and gourd before and after flowering is the same. Fruit setting of melons is based on fertilization and needs artificial pollination. The application of 6-BA to promote fruit setting not only has a stable yield-increasing effect, but also can artificially pollinate the selected nodes of melons and vines within the expected harvest time, so as to realize fruit setting at the predetermined nodes. If fertilizer and water management and pruning are properly strengthened, the quality of melons and fruits will be stable.
Spraying 100 ~ 400 mg/L allantoin solution on watermelon leaves every 5 ~ 9 days 1 time, 3 ~ 4 times, can promote watermelon fruit setting.
When the watermelon vine grows to 7-8 knots, spraying 500-800 mg/L cytokinin solution on the leaves every 7-12 days and spraying * * * 3-4 times can improve the fruit setting rate 19.5%, the sugar content is 0.5%-2% and the yield is 28.6%.
During the flowering period of wax gourd, the flower stalk was treated with 2,4-D solution of 1.5 ~ 20 mg/L, which could significantly improve the fruit setting rate. Using10 ~ 20 mg/l 2,4-d solution to coat the flower stalk of summer squash can prevent the flower from falling and improve the yield.
Spraying 2 ~ 3 true leaves of zucchini with 100 ~ 200mg/L ethephon aqueous solution can effectively improve the fruit setting rate of female flowers.
When the three leaves of zucchini are United, spraying 40% ethephon on the leaves is 2500 ~ 4000 times (160 ~ 200mg/L), which can make the female flowers appear earlier and more, and can blossom and bear fruit early.
Apply 20 ~ 30mg/L of 2,4-D liquid medicine or 30 ~ 40mg/L of anti-falling agent liquid medicine to the base of the open female flower style for one week. In order to prevent repeated smearing, some dyes are added to the growth regulator for marking. Seed soaking with 5 ~ 10 mg/L of 2,4-d solution can also promote parthenocarpy. Generally, there is no need to water and fertilize after delaying seedlings and before fruit setting, so as to promote roots and strengthen seedlings. Using 20 ~ 30mg/L 2,4-D solution and 20 ~ 30mg/L gibberellin mixed solution, plus 0. 1% procymidone wettable powder, can improve the fruit preservation effect, stimulate fruit growth and prevent gray mold.