角瓜又名西葫芦,是我省普遍栽培的蔬菜品种之一。近年来,为了延长角瓜的供应周期,丰富市场的蔬菜品种,许多乡村采用露地塑料小棚或地膜覆盖栽培角瓜,获得了较高的产量和收入。但是,由于前期温度偏低,花粉的形成、发芽和花粉管的伸长受到障碍,授粉不良,因而产生大量落花化瓜。为了解决这一问题,去年我们应用了沈阳军区大连化工厂生产的2,4—D酸,于角瓜开花期喷用,收到了明显效果。用喷雾器喷花与人工雌雄对花的做对比,提高工效3～4倍,坐瓜率提高20.6％。前期效果更为突 Melon, also known as zucchini, is one of the varieties of vegetables commonly cultivated in our province. In recent years, in order to extend the supply cycle of the melon and enrich the vegetable varieties in the market, many villages use open plastic sheds or mulch to cover cultivated melons and get higher output and income. However, due to the low initial temperature, pollen formation, germination and pollen tube elongation are hindered, pollination is poor, resulting in a large number of flowers melon. In order to solve this problem, last year we applied the 2,4-D acid produced by Dalian Chemical Plant of Shenyang Military Region and sprayed it in the flowering stage of melon. It achieved remarkable results. Spraying spray with artificial male and female flower contrast, improve work efficiency 3 to 4 times, sit melon rate increased by 20.6%. More pronounced early effect