一、喷施乙烯利。当黄瓜幼苗2片真叶展开时,喷一次浓度为200mg/kg的乙烯利溶液,隔10天喷一次,增加雌花数,增产15％左右。 二、熏烟法。温室黄瓜幼苗2～3片真叶时,向室内放淡烟(燃烧秸秆),保持密闭2～3昼夜,可使黄瓜雌花增加,增加产量。还可杀死危害黄瓜红蜘蛛。 First, spray Ethephon. When cucumber seedlings 2 true leaves unfolded, spraying a concentration of 200mg / kg of ethephon spray, spraying once every 10 days to increase the number of female flowers, an increase of about 15%. Second, smoke law. Greenhouse cucumber seedlings 2 to 3 true leaves, put indifferent to the indoor smoke (burning straw), to maintain confined 2 to 3 days and nights, the cucumber female flowers can increase and increase production. Can also kill red spider cucumbers.