喷洒乙烯利法当黄瓜苗长出1～3片真叶时,第2～21节叶腋的花芽陆续分化,还未分化是雌花还是雄花时喷施乙烯利可增加雌花量,使黄瓜增产。喷施乙烯利的浓度一般为100～200毫克/升,太低起不到作用,太高则会抑制花芽进一步分化而形成空节。一般喷施1～2次即可,喷施时选在晴天下午16:00为最好,对叶 Spraying ethephon method When the cucumber seedlings grow 1 to 3 true leaves, the flower buds of axils of the second to the 21st leaves one after another differentiated, and the female flowers or the male flowers have not yet been differentiated to be sprayed with ethephon to increase the female flowers to increase the cucumber yield. The ethephon sprayed concentration is generally 100 ~ 200 mg / l, too low to play a role, too high will inhibit the further differentiation of flower buds and the formation of space Festival. General spraying 1 or 2 times can be sprayed when the election at 16:00 in the sunny afternoon for the best, the leaves