冬春大棚温室温度低,西葫芦雄花即使开放,花粉也少,因此座瓜比较困难。为提高座果率,可使用2,4-D涂花,以保花保果。2,4-D的使用浓度为20—30ppm;处理方法是用毛笔沾上药液涂抹雌花的柱头(切不可涂抹花梗)及花冠基部。为便于识别以防重涂,可在2,4-D药液中加入些颜料。 Greenhouse winter and spring greenhouse temperature is low, even if the male flowers of squash, pollen is also less, so seat melon more difficult. To improve the rate of fruit, you can use 2,4-D Tuhua, Paul flower and fruit protection. The concentration of 2,4-D is 20-30ppm. The treatment method is to smear the stigma of the female flower (do not smear the pedicel) and the base of the corolla with a liquid brush. For ease of identification in case of recoat, add some pigment to the 2,4-D solution.